Z-World LP3500 User Manual

Fox (LP3500)

C-Programmable Single -Board Compu ter

User’s Manual

019–0111 • 041029–E

Fox (LP3500) User’s Manual

Part Number 019-0111 • 041029–E • Printed in U.S.A.

©2002–2004 Z-World Inc. • All rights reserved.

Z-World reserves the right to make changes and

improvements to its products without provi ding not ice.

Trademarks

Rabbit and Rabbit 3000 are registered trademarks of Rabbit Semiconductor.

Dynamic C is a registered trademark of Z-W o rld Inc.

Z-World, Inc.

2900 Spafford Street

Davis, California 95616-6800

USA

Telephone: [phone]

Fax: [phone]

www.zworl d.com

Fox (LP3500)

TABLE OF CONTENTS

Chapter 1. Introduction 1

1.1 LP3500 Description..............................................................................................................................1

1.2 LP3500 Features...................................................................................................................................2

1.3 Optional Add-Ons.................................................................................................................................3

1.4 Development and Evaluation Tools......................................................................................................4

1.4.1 Tool Kit.........................................................................................................................................4

1.4.2 Software........................................................................................................................................5

1.5 CE Compliance.....................................................................................................................................6

1.5.1 Design Guidelines.........................................................................................................................7

1.5.2 Interfacing the LP3500 to Other Devices .....................................................................................7

Chapter 2. Getting Started 9

2.1 LP3500 Connections.............................................................................................................................9

2.2 Remove Battery Tab...........................................................................................................................13

2.3 Installing Dynamic C..........................................................................................................................14

2.4 Starting Dynamic C ............................................................................................................................14

2.5 PONG.C..............................................................................................................................................15

2.6 Where Do I Go From Here? ...............................................................................................................15

Chapter 3. Subsystems 17

3.1 LP3500 Pinouts...................................................................................................................................18

3.1.1 Headers and Screw Terminals.....................................................................................................18

3.2 Power Modes ......................................................................................................................................19

3.2.1 Setting the Power-Save Mode.....................................................................................................20

3.2.2 Operating in the Power-Save Mode............................................................................................21

3.2.3 Resuming Normal-Power or Low-Power Operation ..................................................................21

3.3 Digital I/O...........................................................................................................................................22

3.3.1 Digital Inputs...............................................................................................................................22

3.3.2 Digital Outputs............................................................................................................................23

3.4 Serial Communication ........................................................................................................................25

3.4.1 RS-232 ........................................................................................................................................26

3.4.2 RS-485 ........................................................................................................................................26

3.4.3 Serial Interface Port ....................................................................................................................28

3.4.4 Programming Port.......................................................................................................................28

3.5 Display Interface.................................................................................................................................29

3.6 A/D Converter Inputs (LP3500 only) .................................................................................................30

3.7 PWM Outputs.....................................................................................................................................32

3.8 Relay Output Circuit (LP3500 only) ..................................................................................................33

3.9 Memory...............................................................................................................................................34

3.9.1 SRAM .........................................................................................................................................34

3.9.2 Flash Memory.............................................................................................................................34

Chapter 4. Software 35

4.1 Upgrading Dynamic C........................................................................................................................36

4.1.1 Patches and Bug Fixes................................................................................................................36

4.1.2 Upgrades .....................................................................................................................................36

User’s Manual

4.2 Programming Cable............................................................................................................................37

4.2.1 Switching Between Program Mode and Run Mode...................................................................37

4.2.2 Detailed Instructions: Changing from Program Mode to Run Mode.........................................37

4.2.3 Detailed Instructions: Changing from Run Mode to Program Mode.........................................37

4.3 Sample Programs................................................................................................................................38

4.3.1 Power Modes..............................................................................................................................38

4.3.2 Digital I/O...................................................................................................................................38

4.3.3 Serial Communication................................................................................................................ 39

4.3.4 A/D Converter Inputs.................................................................................................................39

4.3.5 PWM Outputs............................................................................................................................. 40

4.3.6 Relay Output...............................................................................................................................40

4.3.7 Vcc Monitoring .......................................................................................................................... 40

4.3.8 LP3500 Calibration .................................................................................................................... 40

4.3.9 LCD/Keypad Module Sample Programs....................................................................................41

4.4 LP3500 Libraries................................................................................................................................42

4.5 LP3500 Function APIs.......................................................................................................................43

4.5.1 LP3500 Power Modes................................................................................................................43

4.5.2 Board Initialization..................................................................................................................... 47

4.5.3 Digital I/O...................................................................................................................................48

4.5.4 Serial Communication................................................................................................................ 50

4.5.5 A/D Converter Inputs.................................................................................................................52

4.5.6 Vcc Monitoring (LP3500 only)..................................................................................................64

4.5.7 PWM Outputs............................................................................................................................. 65

4.6 Relay Output (LP3500 only) ..............................................................................................................66

Appendix A. LP3500 Specifications 67

A.1 Electrical and Mechanical Characteristics ........................................................................................68

A.1.1 Exclusion Zone..........................................................................................................................71

A.1.2 Headers...................................................................................................................................... 72

A.2 Conformal Coating............................................................................................................................73

A.3 Jumper Configurations......................................................................................................................74

A.4 Use of Rabbit 3000 Parallel Ports..................................................................................................... 77

Appendix B. Prototyping Board 81

B.1 Mechanical Dimensions and Layout................................................................................................. 82

B.2 Using the Prototyping Board............................................................................................................. 83

B.2.1 Interface to LP3500 ................................................................................................................... 83

B.2.2 Demonstration Board................................................................................................................. 84

B.2.3 Prototyping Area........................................................................................................................ 84

Appendix C. LCD/Keypad Module 85

C.1 Specifications.....................................................................................................................................85

C.2 Contrast Adjustment..........................................................................................................................87

C.3 Keypad Labeling................................................................................................................................88

C.4 Header Pinouts...................................................................................................................................89

C.4.1 I/O Address Assignments.......................................................................................................... 89

C.5 Bezel-Mount Installation................................................................................................................... 90

C.6 Connect the LCD/Keypad Module to Your LP3500......................................................................... 92

C.7 LCD/Keypad Module Function APIs................................................................................................ 93

C.7.1 LEDs.......................................................................................................................................... 93

C.7.2 LCD Display..............................................................................................................................94

C.7.3 Keypad.....................................................................................................................................110

C.8 Sample Programs............................................................................................................................. 113

Appendix D. Plastic Enclosure 115

D.1 Assembly Instructions..................................................................................................................... 116

D.2 Dimensions......................................................................................................................................118

Fox (LP3500)

Appendix E. Power Management 119

E.1 External Power Supply .....................................................................................................................119

E.2 Batteries and External Battery Connections.....................................................................................121

E.2.1 Replacing the Backup Battery..................................................................................................122

E.2.2 Power to VRAM Switch...........................................................................................................122

E.2.3 Reset Generator........................................................................................................................123

E.3 Chip Select Circuit ...........................................................................................................................123

Appendix F. Programming Cable 125

Appendix G. Running a Sample Program 129

Notice to Users 131

Index 133

Schematics 137

User’s Manual

Fox (LP3500)

1. INTRODUCTION

The LP3500 is a low-po we r sin gle -bo ard computer with built- i n
analog and digital I/O. Although the LP3500 was designed spe­cifically for low-power applications and data logging, it has a
host of features that make it attractive for other applicat ions as
well. Low power is often required in portable equipment operat­ing from batteries or from solar pow er. The LP3500 is ideal for
monitoring equipment o r processes that are far-removed from a
power supply, remote telemetry (RTUs), pipeline control and
monitoring, well-head monitoring; and use on mobile equipment
such as refrigeration trucks.

An optional plasti c enclosure a nd an

LCD/keypad module are available.

The Tool Kit has the essentials that you need to design your own
low-power microprocessor-based system, and includes a com­plete Dynamic C software development system.

1.1 LP3500 Description

The LP3500 is a low-power single-board computer that incorporates the powerful and
low-EMI Rabbit 3000 microprocessor, flash memory, static RAM, digital I/O ports, A/D
converter inputs, PWM outputs, RS-232/RS-485 serial ports, and both parallel and serial
interfaces that allow other devices to be connected to the LP3500.

All aspects of the LP3500 are designed for low power consumption and operates at a vari­ety of power levels, including a power-save mode, to fit customer-specified conditions at
any given time. The CPU runs at a nominal speed of 7.4 MHz, and operates at 2.8 V to
conserve power. The LP3500 consumes less than 20 mA when fully operational, and less
than 100 µA when in the power-save mode. A replaceable coin-type battery will allow the
LP3500 to operate in sleep mode for over 3 years. The LP3500 is normally powered from
an external battery or power supply. When the unit is in the power-save mode, it can be
awakened by an internal timer, an RS-232 signal, or via polling of an external input. The
LP3500 can be switched from the power-save mode to full operation and back under pro­gram control. In addition, various sections of circuitry (such as the RS-232 ports) can be
switched off under program control to further conserve power when not in use.

User’s Manual 1

1.2 LP3500 Features

• Rabbit 3000® microprocessor operating at up to 7.4 MHz.

• 512K/128K static RAM and 512K/256K flash memory options.

• 26 digital I/O: 16 protected digital inputs and 10 high-current digital outputs provide

sinking and sourcing outputs.

• 8 single-ended or 4 differential analog channels with Vcc monitoring option : 1 1-bit single­ended or 12-bit differential chan nels.

• 3 PWM outputs.

• Six serial ports

1 RS-485
3 RS-232 (one 5-wire and one 3-wire or three 3-wire), jumper option for logic-level

outputs; Serial Port E has a “listen” and “wake-up” capability
1 logic-level serial interface for optional add-ons
1 asynchronous clocked serial port dedicated for programming

• Battery-backed real-time clock.

• Watchdog supervisor.

Two LP3500 models are available. Their standard features are summarized in Table 1.

Table 1. LP3500 Models

Feature LP3500 LP3510

Microprocessor Rabbit 3000 running at 7.4 MHz
Static RAM 512K 128K
Flash Memory 512K 256K
A/D Converter Inputs

(ranges from 0–1 V DC to 0–20 V DC, 4 channels
may be individually configured for 4–20 mA)

C-form Bistable Rel a y Yes No

Yes No

Appendix A provides detailed specifications.
The LP3500 can be mounted in two ways. It can be mounted to a panel or on a plastic-

enclosure base, which allows I/O connections to be made using traditional connectors with

0.1" spacing. The LP3500 can also be inverted and mounted directly to mating connectors
on a motherboard of the customer's design. The first approach is appropriate where I/O
connections go directly to devices and switches. The second approach is appropriate
where additional circuitry is incorporated on the motherboard.

2 Fox (LP3500)

1.3 Optional Add-Ons

• Plastic enclosure (can be wall-mounted or panel-mounted), which consists of a base
and a cover for either the LP3500 by itself or an assembly made up of the LP3500 and
the LP3500 Prototyping Board. The base is also available separately.

• The Prototyping Board included with the Tool Kit is a convenient means of interfacing
to the LP3500 via the screw-terminal headers on the Prototyping Board. The Prototyp­ing Board is also available for separate purchase.

• 4M and 8M serial flash expansion cards.

• LCD/keypad module with 7-key keypad and seven LEDs.

Further details on the Prototyping Board, the plastic enclosure, and the LCD/keypad mod­ule are provided in Appendix B, Appendix C, and Appendix D.

V isi t Z-World’s W e b site for up-to-date information about additional add-ons and features
as they become available. The Web site also has the latest revision of this user’s manual
and schematics.

User’s Manual 3

1.4 Development and Evaluation Tools

1.4.1 Tool Kit

A T ool Kit contains the hardware essentials you will need to develop applications with the
LP3500 single-board computer. The items in the Tool Kit and their use are as follows.

• LP3500 User’s Manual with schematics (this document).

• Dynamic C CD-ROM, with complete product documentation on disk.

• Programming cable, used to connect your PC serial port to the LP3500.

• AC adapter, used to power the LP3500 via the Prototyping Board

. The AC adapter is
supplied with Tool Kits sold in the North American market. If you are using another
power supply, it must provide 3 to 30 V DC

.

• Prototyping Board with pushbutton switches, LEDs, and screw-terminal headers. The
Prototyping Board can be hooked up to the LP3500 to demonstrate the I/O capabilities
of the LP3500 and to provide a prototyping area for you to develop your own add-on
circuits. The screw-terminal headers extend the LP3500’ s headers for development, and
can also be used in a production environment.

• Plastic enclosure with four screws.

• Four stand-offs with mounting screws.

• Screwdriver.

• Rabbit 3000 Processor Easy Reference poster.

• Registration card.

Programming

DIAG

PROG

Cable

(101-0276)

J23

I
N
1
5

I
N

1

J

4

1
1

I

N
1
3

I
N
1
2

I

N
1
1
I
N

1
0

I
N
0

9

I
N
0
8

G

V

N
I
N

D

G

N

J

D

1
2

I

N
0
7

I
N
0

6

I
N
0

5

I

N
0
4
I

N
0
3

J

I
N

1

0
2

I
N
0

1

J
1

3

I
N
0

0

J41

G
N
D

J3

3 V VBAT

GND RxE TxE GND RxC TxC GND RxB TxB GND + 485  GND +K OUT9 OUT8 OUT7 OUT6 OUT5 OUT4 OUT3 OUT2 OUT1 OUT0

J4

J42

J21

J22

J2

VIN

GND

GND

VIN

R1

J44

J43

GND VIN GND VBAT EXT GND PWM2 PWM1 PWM0 GND AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 GND

S4

VIN

GND

G

V

N

I

N

D

G

V

N

I
N

D

S
D

2
S
D

3
S

D

4
S
D

D1

R
W
P

J5

AC Adapter

(North American

kits only)

S1

S2

S3

RN1

1

Screwdriver

Prototyping Board

Fox (LP3500)

C-Programmable Single-Board Computer

Users Manual

0190111  020815A

Stand-Offs

User's Manual

and Screws

Plastic Enclosure

Figure 1. Tool KitLP3500 Tool KitTool Kit

4 Fox (LP3500)

1.4.2 Software

The LP3500 is programmed using version 7.26P or later of Z-World’s Dynamic C. A com-

patible version is inclu ded on t he Tool Kit CD-ROM.

Library functions provide an easy-to-use
interface for the LP3500. Software drivers for digital and analog I/O, and for serial com­munication are included with Dynamic C. Web-based technical support is included at no
extra charge.

Z-World also offers add-on Dynamic C modules containing the popular µC/OS-II real­time operating system, as well as PPP, Advanced Encryption Standard (AES), and other
select libraries. In addition to the Web-based technical support included at no extra charge,
a one-year telephone-based technical support module is also available for purchase. Visit
our Web site at www.zworld.com

or contact your Z-World sales representative or autho-

rized distributor for further information.

User’s Manual 5

1.5 CE Compliance

Equipment is generally divided into two classes.

CLASS A CLASS B

Digital equipment meant for light industrial use Digital equipment meant for home use
Less restrictive emissions requirement:

less than 40 dB µV/m at 10 m
(40 dB relative to 1 µV/m) or 300 µV/m

More restrictive emissions requirement:
30 dB µV/m at 10 m or 100 µV/m

These limits apply over the range of 30–230 MHz. The limits are 7 dB higher for frequencies
above 230 MHz. Although the test range goes to 1 GHz, the emissions from Rabbit-based
systems at frequencies above 300 MHz are generally well below background noise levels.

The LP3500 has been tested and was found to be in conformity with the
following applicable immunity and emission standards. The LP3510 is
also CE qualified as it is a sub-version of the LP3500. Boards that are
CE-compliant have the CE mark.

NOTE: Earlier versions of the LP3500 sold before 2003 that do not

have the CE mark are not CE-complaint.

Immunity

The LP3500 series of single-board computers meets the following EN55024/1998 immu­nity standards.

• EN61000-4-3 (Radiated Immunity)

• EN61000-4-4 (EFT)

• EN61000-4-6 (Conducted Immunity)

Additional shielding or filtering may be required for a heavy industrial environment.

Emissions

The LP3500 series of single-board computers meets the following emission standards
emission standards with the Rabbit 3000 spectrum spreader turned on and set to the nor­mal mode.

• EN55022:1998 Class B

• FCC Part 15 Class B

Your results may vary, depending on your application, so additional shielding or filtering
may be needed to maintain the Class B emission qualification.

6 Fox (LP3500)

1.5.1 Design Guidelines

Note the following requirements for incorporating the LP3500 series of single-board
computers into your application to comply with CE requirements.

General

• The power supply provided with the Tool Kit is for development purposes only . It is the

customer’s responsibility to provide a CE-compliant power supply for the end-product
application.

• When connecting the LP3500 to outdoor cables, the customer is responsible for provid-

ing CE-approved surge/lightning protection.

• Z-World recommends placing digital I/O or analog cables that are 3 m or longer in a

metal conduit to assist in maintaining CE compliance and to conform to good cable
design practices. Z-W orld also recommends using properly shielded I/O cables in noisy
electromagnetic environments.

Safety

• For personal safety, all inputs and outputs to and from the LP3500 must not be con-

nected to voltages exceeding SELV levels (42.4 V AC peak, or 60 V DC). Damage to
the Rabbit 3000 microprocessor may result if voltages outside the design range of 0 V
to 40 V DC are applied directly to any of its digital inputs.

• The lithium backup battery circuit on the LP3500 has been designed to protect the bat-

tery from hazardous conditions such as reverse charging and excessive current flows.
Do not disable the safety features of the design.

1.5.2 Interfacing the LP3500 to Other Devices

There are two versions of the LCD/keypad module that may be used with the LP3500:
without a bezel (Z-World part number 101-0601), and a remote panel-mounted version
with bezel (Z-World part number 101-0541). The cable used to connect the LCD/keypad
module should be less than 30 cm (12") to maintain CE compliance. Appendix C provides
complete information for mounting and using the LCD/keypad module.

Since the LP3500 series of single-board computers is designed to be connected to other
devices, good EMC practices should be followed to ensure compliance. CE compliance is
ultimately the responsibility of the integrator. Additional information, tips, and technical
assistance are available from your authorized Z-World distributor, and are also available
on our Web site at www.zworld.com

.

User’s Manual 7

8 Fox (LP3500)

2. GETTING S TARTED

Chapter 2 explains how to connect the programming cable and
power supply to the LP3500.

2.1 LP3500 Connections

1. Use the 4-40 screws supplied with the Tool Kit to attach the metal stand-offs to your

LP3500 series board as shown in Figure 2.

O

O

O

O

O

U

U

U

U

U

T

T
3

D
3
0

Q16

D33Q14

U
1

R

3

5
1

Q20

R54

GND

GND

T

T

T

1

0

2

D
3
4

Q17

K1

D32

C67

U12

C
7
0

R58

J8

RELAY

C

N

M
O
C

O

N

R
5
6

R
5
5

J9

Y
A
L

P
IS
D

J1

IN
0
0

IN

RN2

0

1

IN

0
2

IN

0
3

IN

0
4
IN

0
5

IN

0
6
IN

0

7

G
N
D

IN

0
8
IN

0
9

IN

1
0
IN

1
1

IN

1
2
IN

1
3

IN

1
4

IN

1

D1

5

C

D4

D2

6

C

D8

8

C10 C13

C

RN1

2

R13

C
3

R6

R16

R

R7

1

7

R9

R1

AIN0 AIN1 AIN2 AIN3

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND

J3

O

O

O

O

O

U

U

J4

U1

R

P

Battery

1
7

BT1

C
4
4

Y1

C
4

0

P

VBAT
EXT

7

R
3
1

C36

R

5

C
4

3

GND VIN GND

D
1
9

D21

D18

C48

R
3
4

U3

U8

R40 C54

R36

C50

D22

J2

C16

C19

D

1

C

5

1

5

D

C

1
7

1

2

C20

C22

D5

D
1
1

D7

4

R
1
8

R20

R22

C
2
9

D13

R

2

3

Q22

R30

C
2

C26

C33

R

R32

R25

2
9

C

R26

3
7

P

P

W

W

W

M

M

M

1

2

0

+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND

9

D

R

2

3

0

7

D25

Q

5

R
4

2

R

3

Q6

8

C
5

3

C51

R

R

4

3

R44

C55

1

9

C
5
9

C
6
0

U9

S1

RESET

R50

R49

J5

PROGRAM

PORT

U

U

U

T

T

T

T

T

8

5

4

7

6

D

D

2

2

8

6

Q

8

Q10

R43

R33

Q13

Y2

C
6
1

Q12

R47

R
4
5

U11

J6

6
6

C

R48

U10

C
6

RP13

4

C65

R

P

1

4

Figure 2. Attach Stand-Of fs and Remove Battery Cap

2. Remove the battery cap from the coin-type lithium-ion battery installed on the LP3500
series board. The battery cap was inserted in the factory to keep the battery fresh until
you are ready to use the board.

User’s Manual 9

3. Attach the LP3500 main board to the Prototyping Board as shown in Figure 3.
Press the headers on the LP3500 series board firmly into the corresponding header sock-

ets located at J1, J2, and J4 on the Prototyping Board.

NOTE: It is important that you line up the header pins on the LP3500 exactly with the

corresponding
pins may become bent or damaged if the pin alignment is offset, and the LP3500 will
not work. Permanent electrical damage may also result if a misaligned LP3500 is
powered up.

header sockets J1, J2, and J4 on the Prototyping Board. The header

PORT

PROGRAM

/RESET

TP2

RESET

S2

Q21

C
6
3

Q19

Q18

R53

R52

C

C

6

6

9

8

LP3500

R27

C38

R21

R

R28

R19

2

D3

R8

R5

C9

C14

RP1

D9

C
7

RP2

C
5

C17

C4

C1

D6

D10

J
P

1

2

RP4

RP3

D16

VCC

R4

R12

GND

R3

+K

R2

IN

J
P
1

D14

R11

J

J

P

R10

P

C

C25

5

3

07

815

1

8

J
P

4

J

C

P

3

2

1

4

C27

C34

J

R15

P

1

0

C

R14

C23

D12

C30

C28

J
P

6

4
1

J

P

9

C
4
2

U2

J
P
8

J

J

P

P

7

1
1

R
P

9

R
P
8

R

C

5

4

9

9

R35

RP10

Q7

Q

D23

Q4

9

Q3

D27

D24

U7

U6

R46

RP11

RP12

Q11

Q15

D29

D31

I

N
1
5

I

N
1
4

I

N

1

3

I

N
1
2

I

N
1

1

I

N
1
0

I

N
0
9

I

N
0
8

G

N

J

D

1

2

I

N

0

7

I

N
0
6

I

N
0

5

J1

I

N

0

4

I

N
0

3

J

I

N

1

0

2

I

N

0

1

J

1

I

3

N
0
0

N

D

3 V VBAT

G

J41

J3

GND RxE TxE GND RxC TxC GND RxB TxB GND + 485  GND +K OUT9 OUT8 OUT7 OUT6 OUT5 OUT4 OUT3 OUT2 OUT1 OUT0

J23

J
1
1

G

V

N

I

N

D

J42

J22

GND

VIN

J4

Figure 3. Attach LP3500 Main Board to Prototyping Board

GND VIN GND VBAT EXT GND PWM2 PWM1 PWM0 GND AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 GND

J2

J4

J21

VIN

GND

VIN

GND

R1

D1

J44

J5

J2

J43

S3

S4

G

V

N

I

N

D

G

V

N

I

N

D

1

S

D
2

S

D
3

S

D
4
S

D

R

W

P

S1

S2

RN1

Prototyping

Board

10 Fox (LP3500)

4. Connect the programming cable to download programs from your PC and to program
and debug the LP3500.

NOTE: Use only the programming cable that has a red shrink wrap around the RS-232

level converter (Z-World part number 101-0276), which is supplied with the LP3500
Tool Kit. Other Z-World programming cables might not be voltage-compatible or their
connector sizes may be different.

Connect the 10-pin PROG connector of the programming cable to header J5 on the LP3500
board. Ensure that the colored edge lines up with pin 1 as shown. There is a small dot on the
circuit board next to pin 1 of header J5. (Do not use the

DIAG connector, which is used for

monitoring only, as explained in Appendix F, “Programming Cable.”) Connect the other
end of the programming cable to a COM port on your PC. Make a note of the port to
which you connect the cable, as Dynamic C will need to have this parameter configured.
Note that COM1 on the PC is the default COM port used by Dynamic C.

1

2

I

N

1

1

I

N
1
0

I

N

0

9

IN

0

8

G
N

D

I

N
0

7

I

N
0
6

I

N
0
5

I

N
0
4

I

N
0
3

J

I

N

1

0
2

I

N
0
1

J

1

I

3

N
0
0

G
N

D

3 V VBAT

J41

J3

GND RxE TxE GND RxC TxC GND RxB TxB GND + 485  GND +K OUT9 OUT8 OUT7 OUT6 OUT5 OUT4 OUT3 OUT2 OUT1 OUT0

X

Do not connect

AC adapter to

VBAT terminal

J5

PROGRAM

PORT

PC COM port

Colored edge

PROG

DIAG

PROG

GND VIN GND VBAT EXT GND PWM2 PWM1 PWM0 GND AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 GND

S4

PORT

R27

C38

R21

R

R28

I

N
1
5

I

N
1
4

I

N
1

3

I

N

J
1

2

J23

D3

J
1
1

C9

RP1

C

7

RP2

C
5

C4

C1

J
P

1

2

G

V

N

I

RP4

N

D

RP3

D16

VCC

R4

R12

GND

R3

R11

J

+K

R2

R10

P

C

3

07

815

IN

1

8

J

J

P

P

4

1

J

P

2

R19

J22

2

4

J2

C27

C34

J

R15

R8

R5

R14

C14

D9

C17

D6

D12

D10

D14

J
P

C25

5

6

C
3
1

J42

P

1

0

C

4

J

1

P

9

C

4

2

U2

C23

J

P

8

J

J

P

P

7

1

1

C30

R
P
9

C28

R
P
8

R

C

5

4

J

9

9

P

R35

GND

VIN

J4

RP10

Q

D23

Q4

9

Q3

D24Q7D27

R1

J43

U7

J21

VIN

GND

U6

R46

RP12

Q11

Q15

D29

D31

J44

PROGRAM

/RESET

TP2

RESET

VIN

Q19

GND

S2

RP11

R53

R52

G

N

D

Q21

C

C

6

6

9

8

G

V

N

I

N

D

D

D1

R
W

P

J5

To

Programming

Cable

Red

shrink wrap

S1

S2

S3

C
6
3

RN1

Q18

V
I

N

1

S

D
2

S

D
3

S

D
4
S

J5

Figure 4. Programming Cable and Power Supply Connections

User’s Manual 11

5. Connect the power supply.
Hook up the connector from the wall transformer to header J5 on the Prototyping Board as

shown in Figure 4. The orientation of this connector is not important since the VIN (posi­tive) voltage is the middle pin, and GND is available on both ends of the three-pin header
J5.

NOTE: Do not connect the AC adapter to the VBAT terminal on the Prototyping Board.

The VBAT terminal supplies th e backu p batt ery vo ltage of 3 V, and the LP3500 may b e
damaged if subjected to the raw DC voltage from the AC adapter through the VBAT
terminal.

6. Apply power.
Plug in the AC adapter. If you are using your own power supply, it must provide 3 V to

30 V DC—voltages outside this range could damage the LP3500.

NOTE: A hardware reset may be done by pressing the RESET switch on the LP3500.

The LP3500 may also be reset by unplugging the AC adapter, then plugging it back in.
However, when the LP3500 is operating in the power-save mode, the backup battery
will provide su ffic ient voltage to prev ent a r eset from happening, in which cas e you wil l
have to press the RESET switch on the LP3500.

OUT1

J4

J1

IN00 IN01 IN02 IN03 IN04 IN05 IN06 IN07 GND IN08 IN09 IN10 IN11 IN12 IN13 IN14 IN15

RN2

D5

D7

C6

D4

D2

C8

D8

C10 C13

C2

RN1

C3

R6

R17

R7

R9

D1

R1

AIN0 AIN1 AIN2 AIN3

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND

OUT9

OUT8

OUT7

OUT6

+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND

D19

C36

RP17

R57

Battery

R31

C29

BT1

C33

R29

R25

C37

R26

D20

D21

D18

C48

U3

C43

C44

Y1

R32

C40

PWM1

PWM0

C16

U1

C19

D15 D17

C15

C12

C20

C22

D11

D13

R23

Q22

R30

C24

R13

R16

R18

C26

R20

J3

R22

D26

R37

D25

Q8

Q5

R42

R38

Q6

C53

C51

R34

R41

R39

R44

C55

U8

R40 C54

R36

C50

D22

VBAT
EXT

GND VIN GND

J2

PWM2

RESET switch

OUT0

OUT2

OUT5

OUT4

OUT3

GND

J8

RELAY

D30

D28

D34

Q17

Q16

Q10

R43

K1

R33

Q13

D32

Y2

C61

Q12

U12

R47

R45

D33Q14

U11

J6

C66

C59

R48

C60

U9

RESET

C64

U13

U10

RP13

S1

C65

R50
R49

RP14

J5

PROGRAM

PORT

NC

COM

NO

R56

R55

C69

C67

J9

C70

R51

R58

Q20

R54

D6

D4

D2

D0

A1

A3

GND

DISPLAY

DPRST

VDISP

GND

GND

OUT0

OUT1

OUT2

OUT3

OUT4

OUT5

D31

D29

PORT

Q9

Q11

TP1

U5

VRAM

R46

RP15

U6

S2

RESET

RESET

U7

U7

TP2

TP2

/RESET

/RESET

Q15

RP12

RP11

C68

D7

Q21

D5

D3

J6

D1

A0

A2

GND

GND

R52

R53

Q18

Q19

DISP

C63

PROGRAM

PORT

PROGRAM

OUT6

D24Q7D27

RP10

OUT7

OUT8

D23

VIN

GND

GND +KGND RxE TxE GND RxC TxC GND RxB TxB GND + 485 

OUT9

Q3

Q4

C49

R59

C52

VBAT

EXT

GND

GND

PWM2

R35

C39

C42

C41

R28

PWM1

CTS RTS

C31

JP2

JP1

JP4

IN

815

U4

JP6

JP5

RP8

C28

RP9

JP11

JP7

JP8

U2

JP9

JP10

C34

R24

C38

R27

GND

AIN7

PWM0

07

C25

C18

R10

JP3

R11

D14

R12

D16

RP3

C30

RP4

JP12

D10

D12

D6

C23

C17

C71

IN DR OUT

D9

JP13

C21

C14

R14

R60

R15

420 mA

C27

R19

R21

AIN3

AIN2

AIN6

AIN5

AIN4

AIN3

AIN2

IN00

R2

+K

R3

GND

IN01

R4

VCC

IN02

IN03

IN04

IN05

IN06

IN07

GND

C1

C4

IN08

IN09

C5

IN10

RP2

C7

IN11

RP1

IN12

C9

R5

IN13

R8

IN14

D3

IN15

AIN1

AIN0

AIN1

AIN0

RESET switch

Figure 5. Locations of LP3500 RESET Switches

Reset switches are located on both sides of the LP3500 board.

12 Fox (LP3500)

2.2 Remove Battery Tab

The backup battery on the LP3500 has a plastic tab to protect the battery against discharg­ing before the LP3500 is placed into service.

OUT1

OUT0

OUT2

OUT3

OUT4

GND

NC

COM

NO

IN00 IN01 IN02 IN03 IN04 IN05 IN06 IN07 GND IN08 IN09 IN10 IN11 IN12 IN13 IN14 IN15

OUT9

+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND

OUT8

OUT7

OUT6

Pull

OUT5

Plastic

Tab

DISPLAY

AIN0 AIN1 AIN2 AIN3

PWM1

PWM2

PWM0

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND

VBAT

EXT

GND VIN GND

Figure 6. Remove Battery Tab

GND

NOTE: Z-World recommends that the battery tab not be removed until you are ready to

place the LP3500 in normal service with regular power connected to header J3.

The backup battery protects the contents of the SRAM and keeps the real-time clock
running when regular power to the LP3500 is interrupted. If you plan to use the real-time
clock functionality in your application, you will need to set the real-time clock once you
remove the plastic tab. Set the real-time clock using the onscreen prompts in the demon­stration program. Alternatively, you may set the real-time clock using the SETRTCKB.C
sample program from the Dynamic C SAMPLES\RTCLOCK folder. The RTC_TEST.C
sample program in the Dynamic C

SAMPLES\RTCLOCK folder provides additional exam-

ples of how to read and set the real-time clock.

User’s Manual 13

2.3 Installing Dynamic C

If you have not yet installed Dynamic C version 7.26P (or a later version), do so now by
inserting the Dynamic C CD in your PC’s CD-ROM drive. The CD will auto-install unless
you have disabled auto-install on your PC.

If the CD does not auto-install, click

Start > Run from the Windows Start button and

browse for the Dynamic C setup.exe file on your CD drive. Click OK to begin the
installation once you have selected the

setup.exe file.

The Dynamic C User’s Manual provides detailed instructions for the installation of
Dynamic C and any future upgrades.

NOTE: If you have an earlier version of Dynamic C already installed, the default instal-

lation of the la te r ver sion wi ll b e in a different folder , and a sep ara te i con wil l app ear on
your desktop.

2.4 St arting Dynamic C

Once the LP3500 is connected to your PC and to a power source, start Dynamic C by dou­ble-clicking on the Dynamic C icon or by double-clicking on the
with DcRab in the Dynamic C directory.

Dynamic C assumes, by default, that you are using serial port COM1 on your PC. If you

are

using COM1, then Dynamic C should detect the LP3500 and go through a sequence
steps to cold-boot the LP3500 and to compile the BIOS. If the error message “Rabbit Pro­cessor Not Detected” appears, you have probably connected to a different PC serial port
such as COM2, COM3, or COM4. Y ou can change the serial port used by Dynamic C wit h
the OPTIONS menu, then try to get Dynamic C to recognize the LP3500 by selecting

Reset Target/Compile BIOS on the Compile menu. Try the different COM ports in the
OPTIONS menu until you find the one you are connected to. If you still can’t get Dynamic

C to recognize the target on any port, then the hookup may be wrong or the COM port
might not working on your PC.

.exe file associated

of

Dynamic C automatically uses a maximum debug baud rate of 38,400 bps when an
LP3500 series board is in use.

14 Fox (LP3500)

2.5 PONG.C

You are now ready to test your set-up by running a sample program.
Find the file

open it with the

PONG.C, which is in the Dynamic C SAMPLES folder. To run the program,

File menu (if it is not still open), compile it using the Compile m enu, and

then run it by selecting Run in the Run menu. The STDIO window will open and will dis­play a small square bouncing around in a box.

This program shows that the CPU is working.

2.6 Where Do I Go From Here?

NOTE: If you purchased your LP3500 through a distributor or Z-World partner, contact

the distributor or Z-World partner first for technical support.

If there are any problems at this point:

• Check the Z-W orld Technical Bulletin Board at www.zworld.com/support/bb/.

• Use the Technical Support e-mail form at www.zworld.com/support/.

If the sample program ran fine, you are now ready to go on to explore other LP3500 fea­tures and develop your own applications.

Chapter 3, “Subsystems,” provides a description of the LP3500’s features, Chapter 4,
“Software,” describes the Dynamic C software libraries and introduces some sample pro­grams. These sample programs can be used as templates for applications you may wish to
develop.

User’s Manual 15

16 Fox (LP3500)

3. SUBSYSTEMS

Chapter 3 describes the principal subsystems for the LP3500.

• Power Modes

•Digital I/O

• Serial Communication

• A/D Converter Inputs (LP3500 only)

• PWM Outputs

• Relay Output Circuit (LP3500 only)

• Memory

Figure 7 shows these Rabbit-based subsystems designed into the LP3500.

SRAM

Flash

LP3500

32 kHz

osc

RABBIT

3.7 MHz

3000

Programming

Port

Serial

Interface

RS-232

osc

RS-485

Decoder

Control

Figure 7. LP3500 Subsystems

Interface

to

LCD/Keypad

Module

Digital

Inputs

Digital

Outputs

Relay

Output

A/D

Converter

PWM

Outputs

User’s Manual 17

3.1 LP3500 Pinouts

The LP3500 pinouts are shown in Figure 8.

IN15

IN14

IN13

IN12

IN11

IN10

17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

Analog

Inputs

PWM

Outputs

Power

VBAT EXT

Supply

Programming

Port

AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7

GND
PWM0
PWM1
PWM2

GND

GND

GND

VIN

PROGRAM

PORT

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

J5

J2

RESET

S1

Serial

Interface

Digital
Inputs

IN09

IN08

GND

IN07

J6

IN06

IN05

IN04

IN03

IN02

IN01

J4

Battery

IN00

J1

25

GND

24

RxE

23

TxE

22

GND

21

RxC/CTS
TxC/RTS
GND
RxB
TxB
GND
RS-485+
RS-485
GND
+K
OUT9
OUT8
OUT7
OUT6
OUT5
OUT4
OUT3
OUT2
OUT1
OUT0
GND

RS-232

RS-485

K

Digital

Outputs

20
19
18
17
16
15
14
13
12

OUT9

11

OUT8

10

OUT7

9

OUT6

8

OUT5

7

OUT4

6

OUT3

5

OUT2

4

OUT1

3

OUT0

2
1

GND

J8

GND

Display Interface

DISPLAY

J9

NO

J8

RELAY

NC

COM

NC

NO

COM

Relay

Outputs

Figure 8. LP3500 Pinouts

NOTE: Although header J2 is installed on the LP3510, the associated analog I/O are not

available on the LP3510. The relay screw-terminal header at J8 is also not installed on
the LP3510. The power supply inputs on header J2 are still available.

3.1.1 Headers and Screw Terminals

Standard LP3500 models are equipped with two 1 × 17 headers (J1 and J2) with a pitch of

0.1", one 1 × 17 header (J4) with a pitch of 0.1", and one 1 × 3 screw terminal strip (J8).
The Display Interface (J9) is a 2 × 13 header with a pitch of 0.1", and the Serial Interface
is a 2 mm 2 × 5 socket.

A variety of commercially available connectors with a 0.1" pitch can be used to interface
to the signals on headers J1, J2, and J4, or the Prototyping Board may be used to access
these signals via screw-terminal headers.

18 Fox (LP3500)

3.2 Power Modes

See note

16 mA

Consumption

Typical Current

Supports

from Table 3

Subsystems

Supports

Relay Output

Power Source

5 mA

1.0 mA

140 µA

140 µA

battery

VIN or external

No No

70 µA

No No 46 µA

lator turned off)

External battery

(with linear regu-

or ext. battery

Onboard ba ttery

See

Code

None VIN Yes Yes

Restrictions

and

SRAM and

Section 3.2.1

Section 3.2.2

R TC updates

Table 2. Software-Defined Power Modes

Power

8 8.192 kHz

None

Modes

9 4.096 kHz

Processor halted None

10 2.048 kHz

Power-Save Mode 2.048 kHz

NOTE: The actual current consumption depends heavily on the SRAM writes in the user’s program. See Section 3.2.2 for more

information.

Debug

Capability

Clock

Frequency

Mode

User’s Manual 19

Normal

7.3728 MHz

Modes

Normal

2 3.6864 MHz

3 1.8423 MHz

1

4 1.2288 MHz

32.768 kHz

Low-

5 0.9216 MHz

7 16.384 kHz

6

Table 2 lists the power modes based on clock frequency that can be defined in software
using the

powerMode function.

The LP3500 can operate at various power levels, depending on the clock frequency and on
which subsystems on the board are turned off using the

devPowerSet function. Table 3

lists the LP3500 subsystems that can be turned off with the devPowerSet function.

Table 3. LP3500 Subsystems That Can Be Turned Off

LP3500 Section Description

RS-232 Receivers and transmitters are disabled, RxE remains active.
RS-485 Transmitter is disabled.
A/D Converter

(LP3500 model only)
LCD/Keypad Module LCD/keypad module is turned off.
All of the Above All sections are disabled as described above.

NOTE: RxE always remains active when the above systems are turned off to allow the

LP3500 to “listen” while it is in the

ADS7870 internal oscillator is turned off.

power-save mode.

The LP3500 processor turns off automatically when VIN is removed, and the processor
will not operate again until VIN is restored. The onboard battery provides backup for the
SRAM and the real-time clock. VIN must be applied to the LP3500 in order to run or set
the processor in any of the numbered modes listed in Table 2.

3.2.1 Setting the Power-Save Mode

The LP3500 can be placed in the power-save mode using one of three different software
calls,

serCommAlert,
timedAlert, or
digInAlert,

depending on whether you wish to use Serial Port E, a simple timeout, or a digital input to
trigger the LP3500 to resume operation in one of the other power modes.

If you call serCommAlert, then any activity on Serial Port E will trigger the LP3500 out
of the low-power mode. If you call timedAlert, then the LP3500 is triggered out of the
power-save mode when the specified time has elapsed. If you call digInAlert, then the
LP3500 is triggered out of the power-save mode when the specified channel is activated.

In addition, digInAlert and serCommAlert have “backup” timeout parameters associ­ated with them to wake up the LP3500 after a specified period even in the absence of the
digital or serial triggers.

20 Fox (LP3500)

3.2.2 Operating in the Power-Save Mode

VIN may be removed to allow the LP3500 to operate using the external battery once the
LP3500 is in Mode 10. At this point, the LP3500 will draw 200 µA after the subsystems
listed in T able 3 are turned off. The LP3500’ s linear regulator may then be turned off using

setpowersource function call, and this will lower the current draw to 100 µA.

the
The LP3500 digital I/O can continue to operate (remember that an independent +K source

is required for the digital outputs) using special software routines.
Here are some tips for when the LP3500 is in the power-save mode.

1. Do not write to the SRAM while the LP3500 is in power-save mode and you are relying
solely on the onboard backup battery.

2. When the linear regulator is turned off, watch your current consumption carefully since
too high a current draw could trigger a system reset and turn off the processor.

3.2.3 Resuming Normal-Power or Low-Power Operation

As long as VIN is still connected and the linear regulator has not been turned off, the
LP3500 will return automatically to the previous power mode once the non-zero timeout
specified in serCommAlert, timedAlert, or digInAlert has elapsed.

NOTE: The processor will tur n o f f if VIN is not ava ilabl e at the e xpirat ion of t he ti meout

or if VIN is not available when a wake-up signal comes in through Serial Port E or the
selected digital input.

When the timeout is set to 0, which corresponds to an indefinite timeout, the LP3500 may
still be restored to a normal power mode from the power-save mode.

1. Make sure that raw DC power is available at VIN.

2. Turn the linear regulator back on using the setpowersource function call.

3. Use the rdPowerState function call to establish that the LP3500 is now operating
from VIN. Note that this function only works with LP3500 models, which have the
A/D converter.

4. Use the powerMode function call to set the desired power mode.

User’s Manual 21

3.3 Digital I/O

3.3.1 Digital Inputs

The LP3500 has 16 digital inputs, IN00–IN15. The inputs are factory-configured to be
pulled up to +K in banks of eight, but they can also be pulled up to Vcc or down to 0 V in
banks of eight by changing a surface-mounted 0 Ω resistor as shown in Figure 9.

Vcc

Factory

+K

0 W

22 kW

Default

GND

Figure 9. LP3500 Digital Inputs [Pulled Up—Factory Default]

The digital inputs are each fully protected
over a range of 0 V to +36 V, and can
handle short spikes of ±40 V. The actual
switching threshold is approximately

1.40 V. Anything below this value is a
logic 0, and anything above is a logic 1.

Pulling the digital inputs to Vcc will in­crease the current consumption by about
300 µA for each digital input.

100 kW

330 nF

+40 V

+36 V

+3.3 V

Microprocessor

Spikes

Rabbit 3000

Normal Switching

Spikes



Levels

Digital Input Voltage

40 V

Figure 10. LP3500 Digital Input Protected

22 Fox (LP3500)

Spikes

Range

3.3.2 Digital Outputs

The LP3500 has 10 digital outputs: OUT0–OUT7 can each sink up to 200 mA, and
OUT8–OUT9 can each source up to 200 mA at 36 V. Figure 11 shows a wiring diagram
for using the digital outputs in a sinking or a souring configuration.

SINKING OUTPUTS (OUT0OUT7)

K

Current

Flow

1 MW

SOURCING OUTPUTS (OUT8OUT9)

Vcc

K

Current

Flow

Figure 11. LP3500 Digital Outputs

TIP: Turn the outputs off (high for sourcing outputs and low for sinking outputs) to

reduce current consumption.

User’s Manual 23

When the LP3500 is connected to the Proto­typing Board, a 0 Ω resistor on the Prototyp-

GND

VIN

ing Board (R1) ties +K to VIN, the raw DC
input voltage. Figure 12 shows the location

D1

J5

R1

DS4 DS3 DS2 DS1

PWR

of this 0 Ω resistor on the Prototyping Board.

NOTE: R1 on the Prototyping Broad

must be removed to avoid damage to
the power supplies if you are using the
Prototyping Board with the LP3500
and you are using separate power sup­plies for VIN and K.

R1

OUT8 OUT7 OUT6 OUT5 OUT4 OUT3 OUT2 OUT1 OUT0

J44

Figure 12. Location of R1

on Prototyping Board

When the LP3500 is used alone, remember to connect a power supply to +K (pin 12 on
header J7). Your +K supply may be up to +36 V DC, and should be capable of delivering
up to 2.0 A.

NOTE: If +K is not connected, the digital inputs may f loat, whi ch may increas e your cur -

rent consumption.

24 Fox (LP3500)

3.4 Serial Communication

The LP3500 has three RS-232 serial ports that can set using the serMode software function
call as one RS-232 serial channel (with RTS/CTS) and one 3-wire channel, or they may be
set as three RS-232 (3-wire) channels. Table 4 summarizes the options.

Table 4. RS-232 Serial Communication Configurations

serMode

B C E

Serial Port

0 RS-232, 3-wire RS-232, 3-wire RS-232, 3-wire
1 RS-232, 5-wire CTS/RTS RS-232, 3-wire

The LP3500 also has one RS-485 serial channel (Serial Port F), one CMOS-level serial
interface port (Serial Port D), and one CMOS-level serial channel that serves as the pro­gramming port (Serial Port A).

All six serial ports operate in an asynchronous mode. An asynchronous port can handle 7
or 8 data bits. A 9th bit address scheme, where an additional bit is sent to mark the first
byte of a message, is also supported. Serial Port D and Serial Port A, the programming
port, can be operated alternately in the clocked serial mode. In this mode, a clock line syn­chronously clocks the data in or out. Either of the two communicating devices can supply
the clock. The LP3500 uses a 3.6864 MHz crystal, which is doubled to 7.3728 MHz. At
this frequency, the LP3500 supports standard asynchronous baud rates up to a maximum
of 921,600 bps.

Table 5 lists the use and the capabilities of the six serial ports.

Table 5. LP3500 Serial Port Uses and Capabilities

Serial Port Use

A

B 3-wire RS-232 J4 No

C

D

ERS-232 J4 No
FRS-485 J4 No

User’s Manual 25

Programming port or logic-level
serial port

3-wire RS-232 or RTS/CTS flow
control for Serial Port B

General-purpose serial interface
port

Header

Location

J5 Yes

J4 No

J6 Yes

Synchronous

Capability

3.4.1 RS-232

The LP3500 RS-232 serial communication is supported by an RS-232 transceiver. This trans­ceiver provides the voltage o utp ut, sl ew rate, and i npu t v oltage i mmuni ty requi red to meet
the RS-232 serial communicatio n p roto col. Bas ically, the chip translates the Rabbit 3000’s
logic-level signals to RS-2 32 s ig nal le vels. No te t hat the po lari ty is rever sed in an RS-23 2
circuit so that a +2.8 V out put becom es app roxi matel y -7 V and 0 V is out put as +7 V. The
RS-232 transceiver also provides t he p roper line l oading for reli able comm uni cation.

RS-232 can be used effectively at the LP3500’s m aximum baud rate for distances of up to
15 m.

Logic-level signals are also possible on Serial Ports B, C, and E by changing the 0 Ω
surface-mounted resistor jumper settings at locations JP1–JP6.

Serial Port E can be set to “listen” and “wake up” the LP3500 when the unit is in a low­power mode.

3.4.2 RS-485

The LP3500 has one RS-485 serial channel, which is connected to Serial Port F on the
Rabbit 3000 through an RS-485 transceiver. The half-duplex communication uses the
Rabbit 3000’s PG0 pin to control the transmit enable on the communication line.

The LP3500 can be used in an RS-485 multidrop network. Connect the 485+ to 485+ and
485– to 485– using single twisted-pair wires (nonstranded, tinned) as shown in Figure 13.
Note that a common ground is recommended.

26 Fox (LP3500)

IN00 IN01 IN02 IN03 IN04 IN05 IN06 IN07 GND IN08 IN09 IN10 IN11 IN12 IN13 IN14 IN15

J1

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND

PWM0

PWM1

PWM2

VBAT

EXT

GND VIN GND

J2

PROGRAM

PORT

GND

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND

PWM0

PWM1

PWM2

VBAT

EXT

GND VIN GND

PROGRAM

PORT

R1

AIN0 AIN1 AIN2 AIN3

J3

Battery

RESET

S1

J5

DISPLAY

R1

AIN0 AIN1 AIN2 AIN3

J3

NO

J4

Ground recommended

J4

Rx

4

+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND

OUT9

OUT8

OUT7

OUT6

OUT5

OUT4

OUT3

OUT2

OUT1

OUT0

GND

J8

RELAY

NC

COM

IN00 IN01 IN02 IN03 IN04 IN05 IN06 IN07 GND IN08 IN09 IN10 IN11 IN12 IN13 IN14 IN15

J1

J4

3

2

1

13

2

TxB

GND

485+

485

+K

OUT9

OU

Battery

+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND

OUT9

OUT8

J2

RESET

S1

J5

OUT7

OUT6

OUT5

OUT4

OUT3

OUT2

OUT1

OUT0

GND

GND

DISPLAY

J8

RELAY

NO

NC

COM

Figure 13. LP3500 Multidrop Network

Zener diodes are used in lieu of termination and bias resistors to minimize power con­sumption.

User’s Manual 27

3.4.3 Serial Interface Port

The LP3500 offers a Serial Interface port at header
J6, a 2 mm 2 × 5 socket. This port may be used to
connect serial logic-level devices such as Z-W orld’s
serial flash expansion cards to Serial Port D on the
Rabbit 3000.

Figure 14 provides the pinout for the Serial Inter­face Port.

PIO_2
PIO_1
PIO_0

PF0_SCK

PC1_SRX

J6

PF2_SRST
PB7_SFCS
PC0_STX
Vcc
GND

3.4.4 Programming Port

Figure 14. Serial Interface Port

(Header J6) Pinout

The LP3500 has a 10-pin programming header. The
programming port uses the Rabbit 3000’s Serial
Port A for communication, and is used for the following operations.

• Programming/debugging

• Cloning

The programming port is used to start the LP3500 in a mode where the LP3500 will do wn­load a program from the port and then execute the program. The programming port trans­mits information to and from a PC while a program is being debugged.

The Rabbit 3000 startup-mode pins (SMODE0, SMODE1) are presented to the program­ming port so that an externally connected device can force the LP3500 to start up in an
external bootstrap mode. The LP3500 can be reset from the programming port via the

/EXT_RSTIN line.

The Rabbit 3000 status pin is also presented to the programming port. The status pin is an
output that can be used to send a general digital signal.

NOTE: Refer to the Rabbit 3000 Microprocessor User’s Manual for more information

related to the bootstrap mode.

28 Fox (LP3500)

3.5 Display Interface

The LP3500 supports an interface with the parallel ports
on the Rabbit 3000 via the Display Interface at header
J9. The Display Interface may be used with Z-World’s
LCD/keypad module, which off ers an operator interface
with seven keys and a 122 × 32 graphic display.

Figure 15 provides the pinout for the Serial Interface
Port.

Appendix C, “LCD/Keypad Module,” provides further
information on the LCD/keypad module.

J9

BFD7
BFD5
BFD3
BFD1

BFA0
BFA2

GND

GND
LED5
LED3
LED1

DISP

VDISP

BFD6
BFD4
BFD2
BFD0
BFA1
BFA3
GND
LED6
LED4
LED2
LED0
DPRST
VDISP

Figure 15. Display Interface

(Header J9) Pinout

User’s Manual 29

3.6 A/D Converter Inputs (LP3500 only)

The single 8-channel A/D converter chip used in the LP3500 (the LP3510 does not have
analog capabilities) has a resolution of 12 bits for differential measurements or 11 bits for
single-ended measurements. Four of the channels can be jumpered individually for 4–20 mA
using jumpers across pins on header J3, and all 8 channels can be used over several
software-scaled voltage ranges.

The

A/D converter chip has an internal amplifier that works with the resistor divider net-

work on the analog inputs as shown in

+ V

Figure 16.

AIN0

AIN1

R

IN

953 kW

ADC

Jumper pins to
configure for
420 mA

AGND

J3

100 W

52.3 kW

100 pF

Figure 16. Buffered A/D Converter Inputs

The

A/D converter chip can be programmed in software to operate over the voltage ranges

shown in

Table 6.

Table 6. A/D Converter Input Ranges

Gain Code Multiplier

0 1 0–20 V
1 2 0–10 V
2 4 0–5 V

Voltage

Range

3 5 0–4 V
4 8 0–2.5 V
5100–2 V
6160–1.25 V
7200–1 V

30 Fox (LP3500)

Single-ended measurements are made by connecting the analog signal between an analog
input channel (AIN0–AIN7) and AGND. Differential measurements are made by connect­ing a pair of differential analog signals to an adjacent pair of analog input channels
(AIN0–AIN1, …, AIN6–AIN7). The A/D converter is only capable of converting positve
voltages, and so will convert the difference between an adjacent pair of input channels,
and must be scaled for a voltage range appropriate for the voltage differences.

Table 7 lists the jumper configurations for header J3 used to set the 4–20 mA and the volt­age measurement options.

Table 7. Header J3 Configuration for Analog I/O Options

Analog Input Channel

AIN0 Jumper “parked” on pin 2 Pins 1–2 connected
AIN1 Jumper “parked” on pin 4 Pins 3–4 connected
AIN2 Jumper “parked” on pin 6 Pins 5–6 connected
AIN3 Jumper “parked” on pin 8 Pins 7–8 connected

CAUTION: If you have enabled the 4–20 mA current option on any of the AIN0–AIN3

channels, be careful with any voltage sources that you might connect to these inputs.
The voltage must be le ss than 2.5 V to keep the current ac ross the 100 Ω resistor below
the maximum allowed current.

Voltage Option

(Factory Default)

4–20 mA Option

The A/D converter inputs are factory-calibrated, and the calibration constants are stored in
flash memory . You may calibrate the A/D converter inputs at a later time using the software
functions described in Section 4.5.5, “A/D Converter Inputs.”

NOTE: If you are using a fixed volt age ran ge, you should recalibr ate your LP35 00 at that

range.

AIN7 can be used to monitor Vcc using the VccMonitorInit function. While Vcc can
be monitored in all the power modes, Vcc monitoring is particularly useful when the
LP3500 is being operated from an external battery to monitor the voltage being supplied
by the battery.

The

VccMonitorInit function requires the operation of the A/D converter, which con-

sumes about 500 µA. The Vcc monitoring circuit itself consumes about 15 µA while it is

engaged.

Turn off VccMonitorInit (and the A/D converter if it is not going to be used)

when the test is done to extend your battery life.

User’s Manual 31

3.7 PWM Outputs

The D/A conversion outputs are pulse-width modulated and scaled to provide an output
from 0 V to Vcc (approx. 2.8 V).

Figure 17 shows the PWM outputs.

Rabbit 3000

Microprocessor



1 kW

PWM0

PWM1

1 nF

GND

Figure 17. PWM Outputs

32 Fox (LP3500)

3.8 Relay Output Circuit (LP3500 only)

A bistable relay is stuffed on LP3500 models only at position K1, and the relay contacts
are accessed via screw-terminal header J8. The relay can switch up to 1 A at 30 V DC.

The relay is set via Parallel Port PG4 on the Rabbit 3000, and is reset via Parallel Port PG5
by a 10 ms pulse. The relay resets when the LP3500 resets, and operates only in the nor­mal power modes.

NOTE: The relay does not reset automatically when power is removed from the

LP3500.

PG4

Rabbit 3000

Microprocessor



PG5

SET

RESET

5

-

10 nF

7

8

9

+

10

5.1 W

5.1 W

10 nF

1

+

4

3

2

-

6

NO

COM

NC

J8

1

2

3

Figure 18. Relay Output Circuit

NOTE: Switching the relay may consume up to 120 mA during the roughly 10 ms that it

takes for the relay to switch. Make sure that your power supply has sufficient capacity
to handle this sur ge c urrent to avoi d putti ng the LP3 500 into the power - save mode . The
relay does not consume any current while it is in the NO or the NC position and is not
switching.

User’s Manual 33

3.9 Memory

3.9.1 SRAM

The LP3500 module is designed to accept 128K to 512K of SRAM packaged in an SOIC
case. The standard LP3500 modules come with 512K of SRAM.

3.9.2 Flash Memory

The LP3500 is also designed to accept 256K to 512K of flash memory packaged in a
TSOP case. The standard LP3500 modules comes with two 256K flash memory chips.

NOTE: Z-World recommends that any customer applications should not be constr ained

by the sector size of the flash memory since it may be necessary to change the sector
size in the future.

A Flash Memory Bank Se lect jump er configuration option based on 0 Ω surface-mounted
resistors exists at header JP10. This option, used in conjunction with some configuration
macros, allows Dynamic C to compile two different co-resident programs for the upper
and lower halves of the 256K flash in such a way that both programs start at logical
address 0000. This is useful for applications that require a resident download manager and
a separate downloaded program. See Technical Note 218, Implementing a Serial Down-
load Manager for a 256K Flash, for details.

34 Fox (LP3500)

4. SOFTWARE

Dynamic C is an integrated development system for writing
embedded software. It runs on an IBM-compatible PC and is
designed for use with Z-World single-board computers and other
devices based on the Rabbit microprocessor.

Chapter 4 provides the libraries, function calls, and sample pro­grams related to the LP3500.

You have a choice of doing your software development in the flash memory or in the static
RAM included on the LP3500. The advantage of working in RAM is to save wear on the
flash memory, which is limited to about 100,000 write cycles.

NOTE: An application can be developed in RAM, but cannot run standalone from RAM

after the programming cable is disconnected. All standalone applications can only run
from flash m emory.

The disadvantage of using flash memory for debug is that interrupts must be disabled for
approximately 5 ms whenever a break point is set in the program. This can crash fast inter­rupt routines that are running while you stop at a break point or single-step the program.
Flash memory or RAM is selected on the Options > Project Options > Compiler menu.

Dynamic C provides a number of debugging features. You can single-step your program,
either in C, statement by statement, or in assembly language, instruction by instruction.
You can set break points, where the program will stop, on any statement. Y ou can evaluate
watch expressions. A watch expression is any C expression that can be evaluated in the
context of the program. If the program is at a break point, a watch expression
expression using local or external variables.

User’s Manual 35

can view any

4.1 Upgrading Dynamic C

4.1.1 Patches and Bug Fixes

Dynamic C patches that focus on bug fixes are available from time to time. C heck the Web
site

• www.zworld.com/support/
for the latest patches, workarounds, and bug fixes.
The default installation of a patch or bug fix is to install the file in a directory (folder) dif-

ferent from that of the original Dynamic C installation. Z-World recommends using a dif­ferent directory so that you can verify the operation of the patch without overwriting the
existing Dynamic C installation. If you have made any changes to the BIOS or to libraries,
or if you have programs in the old directory (folder), make these same changes to the
BIOS or libraries in the new directory containing the patch. Do not simply copy over an
entire file since you may overwrite a bug fix; of course, you may copy over any programs
you have written. Once you are sure the new patch works entirely to your satisfaction, you
may retire the existing installation, but keep it available to handle legacy applications.

4.1.2 Upgrades

Dynamic C installations are designed for use with the board they are included with, and
are included at no charge as part of our low-cost kits. Dynamic C is a complete software
development system, but does not include all the Dynamic C features. Z-W orld also offers
add-on Dynamic C modules containing the popular µC/OS-II real-time operating system,
as well as PPP, Advanced Encryption Standard (AES), and other select libraries. In addi­tion to the Web-based technical support included at no extra charge, a one-year telephone­based technical support module is also available for purchase.

36 Fox (LP3500)

4.2 Programming Cable

The programming cable has a level converter board in the middle of the cable since the
LP3500 programming port supports CMOS logic levels, and not the higher voltage RS-232
levels that are used by PC serial ports. When the programming cable is connected,
Dynamic C running on the PC can hard-reset the LP3500 and cold-boot it. The cold boot
includes compiling and downloading a BIOS program that stays resident while you work. If
you crash the target, Dynamic C will automatically reboot and recompile the BIOS if it
senses that a target communication error occurred or that the BIOS source code has changed.

4.2.1 Switching Between Program Mode and Run Mode

The LP3500 is automatically in Program Mode when the programming cable is attached,
and is automatically in Run Mode when no programming cable is attached. See Figure 19.

J4

J1

IN00 IN01 IN02 IN03 IN04 IN05 IN06 IN07 GND IN08 IN09 IN10 IN11 IN12 IN13 IN14 IN15

RN2

C6

D4

D2

C10 C13

C2

RN1

C3

R6

R7

R9

D1

R1

AIN0 AIN1 AIN2 AIN3

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND

C15

C12

D5

D11

D7

C8

D8

R13

R16

R17

Program Mode

OUT9

OUT8

OUT7

OUT6

+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND

D19

D20

D26

C16

C19

C20

Q22

Colored edge

R37

U1

D15 D17

C22

D13

R23

R30

C24

R18

C26

R20

J3

R22

C36

RP17

R57

Battery

R31

C29

C33

R29

R25

C37

R26

D25

Q8

Q5

R42

D21

D18

R38

C48

Q6
C53

C51

R34

R41

R39

R44

C55

U3

U8

C43

BT1

C44

R40 C54

R36

C50

Y1

R32

C40

D22

J2

PWM1

PWM2

PWM0

VBAT

GND VIN GND

EXT

Power

OUT2

OUT5

OUT4

OUT3

D30

D28

Q16

Q10

R43

R33

Q13
Y2
C61

Q12

R47

R45

U11

C59

R48

C60

U10

U9

RP13

S1

RESET

R50
R49

J5

PROGRAM

PORT

OUT1

OUT0

GND

J8

RELAY

D34

Q17

K1

D32

C67

U12

D33Q14

J6

C66

J9

C64

U13

C70

R51

R58

C65

Q20

R54

RP14

PROG

GND

DIAG

Programming

Cable

NC

COM

NO

R56

R55

DISPLAY

J4

J1

IN00 IN01 IN02 IN03 IN04 IN05 IN06 IN07 GND IN08 IN09 IN10 IN11 IN12 IN13 IN14 IN15

RN2

D4

D2

C2

RN1

C3

R6

R7

R9

D1

R1

AIN0 AIN1 AIN2 AIN3

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND

C15

C12

D5

D7

C6

C8

D8

C10 C13

R17

C16

U1

C19

D15 D17

C20

C22

D11

D13

R23

Q22

R30

C24

R13

R16

R18

C26

R20

J3

R22

Run Mode

+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND

D19

D20

R37

C36

D21

D18

RP17

C48

R57

Battery

C51

R31

R34

U3

U8

C29

C43

BT1

C44

C50

Y1

C33

R29

R32

R25

C40

C37

R26

PWM1

PWM2

PWM0

VBAT

EXT

Power

OUT9

D25

R36

D22

GND VIN GND

OUT1

OUT0

OUT8

OUT2

OUT5

OUT4

OUT3

OUT7

OUT6

GND

J8

RELAY

D30

D28

D26

D34

Q8

Q5

R42

Q17

Q16

Q10

R43

R33

R38

Q6

Q13

Y2

C53

C61

Q12

R41

R39

R44

C55

R47

R45

U11

J6

C66

C59

R48

C60

U10

U9

RP13

S1

R40 C54

RESET

R50
R49

J5

J2

PROGRAM

PORT

RESET

switch

NC

COM

NO

K1

R56

D32

R55

C67

U12

D33Q14

J9

DISPLAY

C64

U13

C70

R51

R58

C65

Q20

R54

RP14

GND

To

PC COM port

RESET LP3500 when changing mode:
Press RESET switch,

Remove, then reapply power

after removing or attaching programming cable.

OR

Figure 19. LP3500 Program Mode and Run Mode Set-Up

4.2.2 Detailed Instructions: Changing from Program Mode to Run Mode

1. Disconnect the programming cable from header J3 of the LP3500.

2. Reset the LP3500 by unplugging the AC adapter, then plugging it back in, or press the RESET
switch.

The LP3500 is now ready to operate in the Run Mode.

4.2.3 Detailed Instructions: Changing from Run Mode to Program Mode

1. Attach the programming cable to header J1 of the LP3500.

2. Reset the LP3500 by unplugging the AC adapter, then plugging it back in, or press the RESET
switch. Alternatively, you may press <Ctrl-Y> on your PC if Dynamic C is running.

The LP3500 is now ready to operate in the Program Mode.

User’s Manual 37

4.3 Sample Programs

Sample programs are provided in the Dynamic C Samples folder. The sample program

PONG.C demonstrates the output to the STDIO window.

The various directories in the Samples folder contain specific sample programs that illus­trate the use of the corresponding Dynamic C libraries.

The LP3500 folder provides sample programs specific to the LP3500. Each sample pro­gram has comments that describe the purpose and function of the program. Follow the
instructions at the beginning of the sample program.

To run a sample program, open it with the File menu (if it is not still open), compile it
using the Compile menu, and then run it by selecting Run in the Run menu. The LP3500
must be in the Program mode (see Section 4.2, “Programming Cable”) and must be con­nected to a PC using the programming cable as described in Section 2.1, “LP3500 Con­nections.”

Appendix G, “Running a Sample Program,” takes you through the steps of running one of
the sample programs.

4.3.1 Power Modes

The following sample program is found in the POWER subdirectory in SAMPLES\LP3500.

• POWER.C—This program demonstrates switching from the normal raw DC power
source to an external battery using the Prototyping Board. Pressing a switch will
change from the power source and will be displayed by flashing LEDs.

• LOWPWRDEMO.C—This program demonstrates a low-power mode with the normal power
source connected to the LP3500.

4.3.2 Digital I/O

The following sample programs are found in the IO subdirectory in SAMPLES\LP3500.

• DIGIN.C—Demonstrates the use of the digital inputs. Using the Prototyping Board, you
can see an input channel toggle from HIGH to LOW when pressing a pushbutton on the
Prototyping Board.

• DIGOUT.C—Demonstrates the use of the high-current outputs configured as either sink­ing or sourcing outputs. Using the Prototyping Board, you can see an LED toggle
on/off via a high-current output.

• DIGBANKIN.C—Demonstrates the use of the digital inputs. Using the Prototyping
Board, you can see a bank of input channels toggle from HIGH to LOW when pressing
a pushbutton on the Prototyping Board.

• DIGBANKOUT.C—Demonstrates the use of the high-current outputs configured as either
sinking or sourcing outputs. Using the Prototyping Board, you can see a bank of chan­nels toggle the corresponding LEDs on/off via high-current outputs.

38 Fox (LP3500)

4.3.3 Serial Communication

The following sample programs are found in the RS232 subdirectory in SAMPLES\LP3500.

SIMPLE3WIRE.C—This program demonstrates basic initialization for a simple RS-232

•

3-wire loopback displayed in the

STDIO window.

The following sample programs are found in the RS485 subdirectory in SAMPLES\LP3500.

SIMPLE485MASTER.C—This program demonstrates a simple RS-485 transmission of

•

lower case letters to a slave LP3500. The slave will send back converted upper case let­ters back to the master LP3500 and display them in the STDIO window. Use

SIMPLE485SLAVE.C to program the slave LP3500.

• SIMPLE485SLAVE.C—This program demonstrates a simple RS-485 transmission of

lower case letters to a slave LP3500. The slave will send back converted upper case let­ters back to the master LP3500 and display them in the STDIO window. Use

SIMPLE485MASTER.C to program the master LP3500.

4.3.4 A/D Converter Inputs

The following sample programs are found in the ADC subdirectory in SAMPLES\LP3500.

• AD_RDVOLT_ALL.C—This program reads and displays the voltage and equivalent values
of each single-ended A/D converter channel. Coefficients are read from the A/D con­verter's simulated EEPROM in flash memory to compute the equivalent voltages. Com­puted raw data and equivalent voltages are displayed in the STDIO window.

• AD_RDVOLT_CH.C—This program reads and displays the voltage and equivalent values
of one single-ended A/D converter channel. Coefficients are read from the A/D con­verter's simulated EEPROM in flash memory to compute the equivalent voltages. Com­puted raw data and equivalent voltages are displayed in the STDIO window.

• AD_RDDIFF_CH.C—This program demonstrates reading one differential A/D converter
channel. Coefficients are read from the A/D converter's simulated EEPROM in flash
memory to compute the equivalent voltages. Computed raw data and equivalent volt­ages are displayed in the STDIO window.

• AD_RDMA_CH.C—This program demonstrates reading one milliampere A/D converter
channel. Coefficients are read from the A/D converter's simulated EEPROM in flash
memory to compute the equivalent currents. Computed raw data and equivalent cur­rents are displayed in the STDIO window.

• AD_SAMPLE.C—This program demonstrates how to use the A/D low-level driver. The
program will display the average voltage that is present on an A/D converter channel.
The particular channel and the number of samples may be changed by the user.

User’s Manual 39

4.3.5 PWM Outputs

The following sample program is found in the IO subdirectory in SAMPLES\LP3500.

• PWMOUT.C—This program demonstrates the PWM functions. It will set the PWM chan­nels, PWM0–PWM2, to the following duty cycles:

PWM Channel 0 to 10%
PWM Channel 1 to 25%
PWM Channel 2 to 50%

All activity will be displayed in the

STDIO window.

4.3.6 Relay Output

The following sample program is found in the RELAY subdirectory in SAMPLES\LP3500.

• SWRELAY.C—This program demonstrates the relay-switching function call operating on
normal power source. Use the pushbutton switches on the Prototyping Board to switch
the relay between the SET (NO) and RESET (NC) positions. All activity will be dis­played with the LEDs.

4.3.7 Vcc Monitoring

The following sample program is found in the POWER subdirectory in SAMPLES\LP3500.

• VCCMONITOR.C—This program demonstrates the Vcc monitoring function on AIN7.
All activity will be displayed in the STDIO window

4.3.8 LP3500 Calibration

The following sample programs are found in the ADC subdirectory in SAMPLES\LP3500.

• ADCAL_ALL.C—This program demonstrates how to recalibrate all single-ended A/D
converter channels using two known voltages to generate constants for each channel,
and will be written into the user block data area. The program uses the STDIO window
to display the voltage that is being monitored.

NOTE: This sample program will overwrite the calibration constants set at the factory.

• ADCAL_CHAN.C—This program demonstrates how to recalibrate one single-ended A/D
converter channel using two known voltages to generate constants for each channel,
and will be written into the user block data area. The program uses the STDIO window
to display the voltage that is being monitored.

NOTE: This sample program will overwrite the calibration constants set at the factory.

• AD_CALDIFF.C—This sample program demonstrates how to recalibrate one dif fe rential
A/D converter channel using two known voltages to generate constants for that channel
and rewrite the constants into the user block data area. The program uses the STDIO
window to display the voltage that is being monitored.

NOTE: This sample program will overwrite the calibration constants set at the factory.

40 Fox (LP3500)

• AD_CALMA_CH.C—This sample program demonstrates how to recalibrate one A/D con­verter channel operating in the 4–20 mA current mode using two known currents to
generate two coefficients, gain and offset, which are rewritten into the user block data
area. The program uses the STDIO window to display the current that is being moni­tored.

NOTE: This sample program will overwrite the calibration constants set at the factory.

4.3.9 LCD/Keypad Module Sample Programs

Sample programs for the LCD/keypad module are described in Section C.8.

User’s Manual 41

4.4 LP3500 Libraries

With Dynamic C running, click File > Open, and select Lib. The following list of
Dynamic C libraries and library directories will be displayed.

Two library directories provide libraries of function calls that are used to develop applica­tions for the LP3500.

• LP3500—libraries associated with features specific to the LP3500. The functions in the

LP35xx.LIB library are described in Section 4.5, “LP3500 Function APIs.”.

Two other library directories provide libraries of function calls that are used to develop
applications for the optional LCD/keypad module.

• DISPLAYS\GRAPHIC—libraries associated with LCD display.

• KEYPADS–libraries associated with the keypad.

The LCD/keypad module functions are described in Section C.7. Other generic functions
applicable to all devices based on the Rabbit 3000 microprocessor are described in the
Dynamic C User’s Manual.

42 Fox (LP3500)

4.5 LP3500 Function APIs

4.5.1 LP3500 Power Modes

int devPowerSet(int devices, int state);

Sets individual devices to low-power or fully active states in the order listed below.

PARAMETERS

devices is a list of the following macros, which are OR'ed together, that will be af fected by the state
parameter, e.g., RS232DEV|ADCDEV.

RS232DEV—RS-232 devices
RS485DEV—RS-485 devices
ADCDEV—ADS7870 A/D converter devices
DISPDEV—LCD/keypad module
ALLDEVICES—all devices

state

0 = shuts or powers down listed devices
1 = activates listed devices

Macro Description state = 0 state after Board Initialization

RS232DEV
RS485DEV Transmitter is disabled 0

ADCDEV ADS7870 internal oscillator is turned off 0
DISPDEV LCD/keypad module is turned off. 0
ALLDEVICES All devices are disabled as described above —

Table E-1 provides further information about the power consumption associated with each section.

RETURN VALUE

0 if valid parameter

-1 otherwise

SEE ALSO

powerMode, anaInConfig, brdInit

Receivers and transmitters are disabled,
RxE remains active

1

User’s Manual 43

int powerMode(int mode);

Sets the LP3500 operating power.

PARAMETERS

mode is the operating mode based on the following macros.

Mode Description

1 CCLK = PCLK = MainOsc = 7.3728 MHz

3 CCLK = PCLK = MainOsc/4 = 1.8423 MHz
4 CCLK = PCLK = MainOsc/6 = 1.2288 MHz
5 CCLK = PCLK = MainOsc/8 = 0.9216 MHz
6 CCLK = PCLK = 32.768 kHz
7 CCLK = PCLK = 32.768 kHz/2 = 16.384 kHz
8 CCLK = PCLK = 32.768 kHz/4 = 8.192 kHz
9 CCLK = PCLK = 32.768 kHz/8 = 4.096 kHz

10 CCLK = PCLK = 32.768 kHz/16 = 2.048 kHz

Typi cal Curre n t

Consumption

5–16 mA

2 mA

Debug

Capable?

Yes2 CCLK = PCLK = MainOsc/2 = 3.6864 MHz

No

NOTE: When using modes 6–10, be sure to call hitwd() expl icitly since periodic inte r-

rupts, which incorporate a virtual watchdog, are disabled in these modes.

Table 2 provides more specific information on the LP3500’s capabilities associated with these and other
software-defined modes.

RETURN VALUE

0 if valid parameter

-1 if invalid parameter

SEE ALSO

devPowerSet, rdPowerState, setPowerState, VccMonitor

44 Fox (LP3500)

void serCommAlert(int lowpowermode, int

maxpowermode, int powersource, unsigned long
timeout);

Use this function to poll Serial Port E for any activity or until a timeout occurs. The function call forces
the LP3500 to enter the low-power mode using the battery for polling. Upon expiration of the timeout or
the receipt of a serial byte, this function will enable the normal power mode and exit.

Use devPowerSet(ALLDEVICES, int state) before and after this function call to deactivate
and activate all devices to operate at less power.

PARAMETERS

lowpowermode is the low-power mode setting to enter, usually 10 (see powerMode())
maxpowermode is the maximum operating power mode setting to enter, usually 1 (see power-

Mode())

powersource

1 = battery
2 = raw DC power

timeout is the timeout in seconds if no activity is detected on the RxE receiver line. Enter 0 for no
timeout

SEE ALSO

powerMode, digInAlert, timedAlert, devPowerSet

void timedAlert(int lowpowermode, int maxpowermode,

int powersource, unsigned long timeout)

Use this function to poll the real-time clock until a timeout occurs. The function call forces the LP3500 to
enter the low-power mode, disables the normal power source, and may enable the external battery for
polling. Upon expiration of the timeout this function will enable the normal power mode and exit. If the
normal power source is not available, the LP3500 will not be able to rsume operation at the maximum­power mode, and may reset.

Use devPowerSet(ALLDEVICES, int state) before and after this function call to deactivate
and activate all devices to operate at less power.

PARAMETERS

lowpowermode is the low-power mode setting to enter, usually 10 (see powerMode())
maxpowermode is the maximum operating power mode setting to enter, usually 1 (see power-

Mode())

powersource

1 = battery
2 = raw DC power

timeout is the timeout in seconds if an input is not received.

SEE ALSO

powerMode, digInAlert, serCommAlert, devPowerSet

User’s Manual 45

void digInAlert(int channel, int value, int

lowpowermode, int maxpowermode, int powersource,
unsigned long timeout)

Use this function to poll a selected digital input until a timeout occurs. The function call forces the
LP3500 to enter the low-power mode using the battery for polling. Upon activation of the channel or
expiration of the timeout, this function will enable the normal power mode and exit.

Use devPowerSet(ALLDEVICES, int state) before and after this function call to deactivate
and activate all devices to operate at less power.

PARAMETERS

channel is the digital input channel (IN00– IN15) to poll
value is the input value of 0 or 1 to receive
lowpowermode is the low-power mode setting to enter, usually 10 (see powerMode())
maxpowermode is the maximum operating power mode setting to enter, usually 1 (see power-

Mode())

powersource

1 = battery
2 = raw DC power

timeout is the timeout in seconds if an input is not received. Enter 0 for no timeout.

SEE ALSO

powerMode, serCommAlert, timedAlert, devPowerSet

int rdPowerState(void);

Determines if the LP3500 is running under battery power or a raw DC power source.

RETURN VALUE

0 if on raw DC power source
1 if on battery power

SEE ALSO

powerMode, setPowerState

int setPowerSource(int state);

Turns the linear regulator “off” or “on.”

PARAMETER

0 for normal power source
1 for battery

RETURN VALUE

0 if successful

-1 if raw DC power source is not available

-2 if battery is not available

SEE ALSO

powerMode, rdPowerState

46 Fox (LP3500)

4.5.2 Board Initialization

void brdInit (void);

Call this function at the beginning of your program. This function initializes the system I/O ports and
loads all the A/D converter and D/A converter calibration constants from flash memory into SRAM for
use by your program. If the LCD/keypad module is installed, this function will turn off LED DS1 to indi­cate that the initialization was successful.

Summary of Initialization

• LP3500 uses main oscillator

• LCD/keypad module buffer is disabled

• RS-485 serial communication is not enabled

• RS-232 serial communication is enabled

• Unused configureable inputs are tied and unused configureable outputs are set low

• Self-timed chip select is s e t to 109 ns

• If A/D converter chip is inst alled, chip is reset and SCLKD is set to 19,200 bps

• If A/D converter chip is inst alled, calibration constants are read

• If relay is installed, relay is set to NC or RESET position

The ports are initialized according to Table A-3.

User’s Manual 47

4.5.3 Digital I/O

void digOut(int channel, int value);

Sets the state of a digital output (OUT0–OUT9).
Remember to call brdInit before executing this function.
A runtime error will occur for the following conditions:

1. channel or value out of range.

2. brdInit was not executed before executing digOut.

PARAMETERS

channel is the output channel number (0–9).
value is the output value (0 or 1).

SEE ALSO

brdInit, digIn, digBankOut

void digBankOut(int bank, int value);

Writes the state of a block of designated digital output channels. The first bank consists of OUT0–
OUT7, the second bank consists of OUT8–OUT9.

A run-time error will occur for the following conditions:

1. channel or value out of range.

2. brdInit was not executed before executing digOut.

PARAMETER

bank is 0 for OUT0–OUT7, 1 for OUT8–OUT9.
value is an 8-bit output value, where each bit corresponds to one channel. OUT0 and OUT8 are the

least significant bit 0.

RETURN VALUE

None.

SEE ALSO

brdInit, digOut, digBankIn

48 Fox (LP3500)

int digIn(int channel);

Reads the state of an input channel (IN00–IN15).
A run-time error will occur for the following conditions:

1. channel out of range.

2. brdInit was not executed before executing digIn.

PARAMETER

channel is the input channel number (0–15)

RETURN VALUE

The logic state of the input (0 or 1).

SEE ALSO

brdInit, digOut, digBankIn

void digBankIn(int bank);

Reads the state of a block of designated digital input channels. The first bank consists of IN0–IN07, the
second bank consists of IN08–IN15.

A run-time error will occur for the following conditions:

1. bank out of range.

2. brdInit was not executed before executing digIn.

PARAMETER

bank is 0 for IN00–IN07, 1 for IN08–IN15.

RETURN VALUE

An input value in the lower byte, where each bit corresponds to one channel. IN00 and IN08 are in the
bit 0 place.

SEE ALSO

brdInit, digOut, digBankOut

User’s Manual 49

4.5.4 Serial Co mmunication

Library files included with Dynamic C provide a full range of serial communications sup­port. The RS232.LIB library provides a set of circular-buffer-based serial functions. The

PACKET.LIB library provides packet-based serial functions where packets can be delim-

ited by the 9th bit, by transmission gaps, or with user-defined special characters. Both
libraries provide blocking functions, which do not return until they are finished transmit­ting or receiving, and nonblocking functions, which must be called repeatedly until they
are finished. For more information, see the Dynamic C User’s Manual and Technical
Note TN213, Rabbit 2000 Serial Port Softwar

e.

Use the following function calls with the LP3500.

int serMode(int mode);

User interface to set up LP3500 serial communication lines. Call thi s f unction after serXOpen().
Whether you are opening one or multiple serial po rts, this function must be executed after execut ing the last

serXOpen function AND before you start using any of the serial ports. This function is non-reentrant.
If Mode 1 is selected, CTS/RTS flow control is exercised using the serBflowcontrolOn and

serBflowcontrolOff functions from the RS232.LIB library.

PARAMETER

mode is the defined serial port configuration.

Mode

0 RS-232, 3-wire RS-232, 3-wire RS-232, 3-wire RS-485
1 RS-232, 5-wire CTS/RTS RS-232, 3-wire RS-485

RETURN VALUE

0 if valid mode, 1 if not.

SEE ALSO

ser485Tx, ser485Rx

Serial Port

B C E F

50 Fox (LP3500)

void ser485Tx(void);

Enables the RS-485 transmitter. Transmitted data get echo'ed back into the receive data buffer. These
echo'ed data could be used to know when to disable the transmitter by using one of the following
methods:

Byte mode—disable the transmitter after the same byte that is transmitted is detected in the receive

data buffer.

Block data mode—disable the transmitter after the same number of bytes transmitted is detected in the

receive data buffer.

serMode() must be executed before running this function.

SEE ALSO

serMode, ser485Rx

void ser485Rx(void);

Disables the RS-485 transmitter. This puts the LP3500 in listen mode, which allows it to receive data
from the RS-485 interface. serMode() must be executed before running this function.

SEE ALSO

serMode, ser485Tx

User’s Manual 51

4.5.5 A/D Converter Inputs

The functions in this section apply only to the LP3500 model.

unsigned int anaInConfig(unsigned int

instructionbyte, unsigned int cmd, long baud);

Use this function to configure the ADS7870 A/D converter. This function will address the ADS7870 in
Register Mode only, and will report an error if you try to use it in Di rect Mod e . Refer to AD S787 0 spec­ification for proper addressing and commands.

ADS7870 Signal ADS7870 State LP3500 Function/State

LN0 Input AIN0
LN1 Input AIN1
LN2 Input AIN2
LN3 Input AIN3
LN4 Input AIN4
LN5 Input AIN5
LN6 Input AIN6
LN7 Input AIN7

/RESET Input Board reset device

RISE/FALL Input Tied up for SCLK active on rising edge

PIO_0 Input Pulled down unless driven by serial interface connection
PIO_1 Input Pulled down unless driven by serial interface connection
PIO_2 Input Pulled down unless driven by serial interface connection
PIO_3 Input Pulled up unless driven by Vcc monitor

CONVERT Input Pulled down, not used

BUSY Output PF1 pulled down; 1 state converter is busy

CCLKCNTRL Input Tied down; 0 state sets CCLK as input

CCLK Input Tied down; external conversion clock
SCLK Input PF0; serial data transfer clock

SDI Input PC0; 3-wire mode for serial data input

SDO Output PC1; serial data output /CS driven

/CS Input PF3 pulled up; active-low enables serial interface

BUFIN Input Tied down; reference buffer amplifier

52 Fox (LP3500)

PARAMETERS

instructionbyte will initiate a read or write operation at 8 or 16 bits on the designated register
address, for example:

checkid = anaInConfig(0x5F, 0, 9600); // read ID and set baud rate

cmd is the command data that configure the registers addressed by the instruction byte. Enter 0 if per-

forming a read operation.

i = anaInConfig(0x07, 0x3a, 0); // write ref/osc reg and enable

baud is the serial clock transfer rate of 9600 to 57,600 bps. baud must be set on the first call to this

function. Enter 0 in this parameter thereafter.

anaInConfig(0x00, 0x00, 9600); // resets device and sets baud

RETURN VALUE

0 on write operations, data value on read operations.

SEE ALSO

anaInDriver, anaIn, brdInit

User’s Manual 53

unsigned int anaInDriver(unsigned int cmd,

unsigned int len);

Reads the voltage of an analog input channel by serial-clocking an 8-bit command to the ADS7870
device by its Direct Mode method. The conversion begins as soon as the last data bit is transferred.

An exception error will occur if Direct Mode bit D7 is not set.

PARAMETER

cmd contains a gain code and a channel code as follows.

D7—1; D6–D4—Gain Code; D3–D0—Channel Code

Use the following calculation and the tables below to determine cmd:

cmd = 0x80 | (gain_code*16) + channel_code

Channel Code

0 +AIN0 -AIN1 8 AIN0 AIN0
1 +AIN2 -AIN3 9 AIN1 AIN1
2 +AIN4 -AIN5 10 AIN2 AIN2
3 +AIN6 -AIN7 11 AIN3 AIN3
4 Reserved 12 AIN4 Reserved
5 Reserved 13 AIN5 Reserved
6 Reserved 14 AIN6 Reserved
7 Reserved 15 AIN7 Reserved

Gain Code Multiplier

0 1 0–20 V
1 2 0–10 V
2 4 0–5 V
3 5 0–4 V
4 8 0–2.5 V
5100–2 V
6160–1.25 V
7200–1 V

Differential
Input Lines

Channel Code

Voltage

Range

Single-Ended

Input Lines

*

4–20 mA

Lines

* Negative input is ground.

len, the output bit length, is always 12 bits.

54 Fox (LP3500)

RETURN VALUE

A value corresponding to the voltage on the analog input channel, which will be:

0–2047 for 11-bit A/D conversions (bit 12 for sign)

-1 for overflow

SEE ALSO

anaInConfig, anaIn

User’s Manual 55

int anaIn(unsigned int channel, int opmode,

int gaincode);

Reads the value of an analog input channel using the direct method of addressing the ADS7870 A/D
converter.

PARAMETERS

channel is the analog input channel number (0 to 7) corresponding to AIN0–AIN7
opmode is the mode of operation:

SINGLE—single-ended input line
DIFF—differential input li ne
mAMP—milliamp input line

channel SINGLE DIFF mAMP

0 +AIN0 +AIN0 -AIN1 +AIN0
1 +AIN1 — +AIN1
2 +AIN2 +AIN2 -AIN3 +AIN2
3 +AIN3 — +AIN3
4 +AIN4 +AIN4 -AIN5 —
5 +AIN5 — —
6 +AIN6 +AIN6 -AIN7 —
7 +AIN7 — —

gaincode is the gain code of 0 to 7:

Gain Code

0 0–20 V
1 0–10 V
20–5 V
30–4 V
4 0–2.5 V
50–2 V
60–1.25 V
70–1 V

RETURN VALUE

A value corresponding to the voltage on the analog input channel, which will be:

0–2047 for 11-bit A/D conversions (signed 12th bit)
ADOVERFLOW (defined macro = -4096) if overflow or out of range

SEE ALSO

anaIn, anaInConfig, anaInDriver

Voltage

Range

56 Fox (LP3500)

int anaInCalib(int channel, int opmode,

int gaincode, int value1, float volts1,
int value2, float volts2);

Calibrates the response of the A/D converter channel as a linear function using the two conversi on poi nts
provided. Four values are calculated and placed into global table _adcCalib to be stored later store
into simulated EEPROM using the function anaInEEWr(). Each channel will have the following
information:

a linear constant,
a voltage offset,
a calculation gain code used to calculate calibrations, and
a user gain code to set voltage range (defaults to the calculation gain code).

NOTE: Vcc monitoring is disabled when anaInCalib is running.

PARAMETERS

channel is the analog input channel number (0 to 7) corresponding to AIN0–AIN7
opmode is the mode of operation:

SINGLE—single-ended input line
DIFF—differential input li ne
mAMP—milliamp input line

channel SINGLE DIFF mAMP

0 +AIN0 +AIN0 -AIN1 +AIN0
1 +AIN1 — +AIN1
2 +AIN2 +AIN2 -AIN3 +AIN2
3 +AIN3 — +AIN3
4 +AIN4 +AIN4 -AIN5 —
5+AIN5— —
6 +AIN6 +AIN6 -AIN7 —
7+AIN7— —

User’s Manual 57

gaincode is the gain code of 0 to 7:

Gain Code

Voltage

Range

0 0–20 V
1 0–10 V
20–5 V
30–4 V
4 0–2.5 V
50–2 V
60–1.25 V
70–1 V

value1 is the first A/D converter channel value (0–2047).
volts1 is the voltage or current corresponding to the first A/D converter channel value (0 to +10 V or

4to 20 mA).

value2 is the second A/D converter channel value (0–2047).
volts2 is the voltage or current corresponding to the first A/D converter channel value (0 to +10 V or

4to 20 mA).

RETURN VALUE

0 if successful.

-1 if not able to make calibration constants.

SEE ALSO

anaIn, anaInVolts, anaInmAmps, anaInDiff, anaInSetRange, anaInVoltXGain,
anaInCalib, brdInit

58 Fox (LP3500)

float anaInVolts(unsigned int channel, unsigned int

gaincode);

Reads the state of a single-ended analog in put channel and uses the previously set calibration constants to
convert it to volts.

PARAMETER

channel is the channel number (0–7):

Channel Code

* Negative input is ground.

gaincode is the gain code of 0 to 7.

Gain Code

Single-Ended

Input Lines

0+AIN0
1+AIN1
2+AIN2
3+AIN3
4+AIN4
5+AIN5
6+AIN6
7+AIN7

Voltage

Range

0 0–20 V
1 0–10 V

*

20–5 V
30–4 V
4 0–2.5 V
50–2 V
60–1.25 V
70–1 V

RETURN VALUE

A voltage value corresponding to the voltage on the analog input channel.
ADOVERFLOW (defined macro = -4096) if overflow or out of range.

SEE ALSO

anaInCalib, anaIn, anaInmAmps, brdInit

User’s Manual 59

int anaInmAmps(unsigned int channel);

Reads the state of an analog input channel and uses the previous ly se t calibration constants to convert it
to current.

PARAMETER

channel is 0–3:

Channel

4–20 mA

Input Lines

*

0AIN0
1AIN1
2AIN2
3AIN3

* Negative input is ground.

RETURN VALUE

A current value between 4.00 and 20.00 mA corresponding to the current on the analog input channel.
ADOVERFLOW (defined macro = -4096) if overflow or out of range.

SEE ALSO

anaInCalib, anaIn, anaInVolts

60 Fox (LP3500)

float anaInDiff(unsigned int channel, unsigned int

gaincode);

Reads the state of a differential analog input channel and uses the previously set calibration constants to
convert it to volts.

PARAMETER

channel is the channel number (0, 2, 4, 6):

Channel

gaincode is the gain code of 0 to 7.

Gain Code

Differential

Input Lines

0 +AIN0 -AIN1
2 +AIN2 -AIN3
4 +AIN4 -AIN5
6 +AIN6 -AIN7

Voltage

Range

0 0–20 V
1 0–10 V
20–5 V
30–4 V
4 0–2.5 V
50–2 V
60–1.25 V
70–1 V

RETURN VALUE

A voltage value corresponding to the voltage on the analog input channel.
ADOVERFLOW (defined macro = -4096) if overflow or out of range.

SEE ALSO

anaInCalib, anaIn, anaInmAmps, brdInit

User’s Manual 61

int anaInEERd(unsigned int channel, int opmode,

unsigned int gaincode);

Reads the calibration constants, gain, and offset for an input based on its designated channel code posi­tion into global table _adcCalib. The constants are stored in the the top 1K of the reserved user block
memory area 0x1C00–0x1FFF.

NOTE: This function cannot be run in RAM.

PARAMETER

channel is the analog input channel number (0 to 7) corresponding to AIN0–AIN7.
opmode is the mode of operation:

SINGLE—single-ended input line
DIFF—differential input li ne
mAMP—milliamp input line

channel SINGLE DIFF mAMP

0 +AIN0 +AIN0 -AIN1 +AIN0
1 +AIN1 — +AIN1
2 +AIN2 +AIN2 -AIN3 +AIN2
3 +AIN3 — +AIN3
4 +AIN4 +AIN4 -AIN5 —
5 +AIN5 — —
6 +AIN6 +AIN6 -AIN7 —
7 +AIN7 — —

ALLCHAN read all channels for selected opmode

gaincode is the gain code of 0 to 7. The gaincode parameter is ign ored when channel is ALLCHAN.

Gain Code

0 0–20 V
1 0–10 V
20–5 V
30–4 V
4 0–2.5 V
50–2 V
60–1.25 V
70–1 V

RETURN VALUE

0 if successful.

-1 if address is invalid or out of range.

SEE ALSO

anaInEEWr, anaInCalib

62 Fox (LP3500)

Voltage

Range

int anaInEEWr(unsigned int channel, int opmode

unsigned int gaincode);

Writes the calibration constants, gain, and offset for an input based on its designated channel code posi­tion from global table _adcCalib. The constants are stored in the the top 1K of the reserved u ser block
memory area 0x1C00–0x1FFF.

NOTE: This function cannot be run in RAM.

PARAMETER

channel is the analog input channel number (0 to 7) corresponding to AIN0–AIN7.
opmode is the mode of operation:

SINGLE—single-ended input line
DIFF—differential input li ne
mAMP—milliamp input line

channel SINGLE DIFF mAMP

0 +AIN0 +AIN0 -AIN1 +AIN0
1 +AIN1 — +AIN1
2 +AIN2 +AIN2 -AIN3 +AIN2
3 +AIN3 — +AIN3
4 +AIN4 +AIN4 -AIN5 —
5+AIN5— —
6 +AIN6 +AIN6 -AIN7 —
7+AIN7— —

ALLCHAN read all channels for selected opmode

gaincode is the gain code of 0 to 7. The gaincode parameter is ign ored when channel is ALLCHAN.

Gain Code

0 0–20 V
1 0–10 V
20–5 V
30–4 V
4 0–2.5 V
50–2 V
60–1.25 V
70–1 V

RETURN VALUE

0 if successful.

-1 if address is invalid or out of range.

SEE ALSO

anaInEEWr, anaInCalib

User’s Manual 63

Voltage

Range

4.5.6 Vcc Monitoring (LP3500 only)

void VccMonitorInit(int state);

PIO3 on the ADS7870 A/D converter enables or disables Vcc monitoring. If monitoring is enabled, ana­log input channel AIN7 is not available.

PARAMETER

state

1 = enable Vcc monitor
0 = disable Vcc monitor

SEE ALSO

VccMonitor, anaInConfig, brdInit

float VccMonitor(void);

If Vcc monitoring is enabled, the Vcc level is read by the ADS7870 A/D converter and is converted to a
voltage value.

RETURN VALUE

A voltage value corresponding to the voltage on the analog input channel.

SEE ALSO

VccMonitorInit, anaInVolts, brdInit

64 Fox (LP3500)

4.5.7 PWM Outp uts

The PWM functions in this section can be used to operate the analog outputs on the
LP3500 model.

int pwmOutConfig(unsigned long frequency);

Sets the base frequency for the PWM pulses and enables the PWM driver on all four channels. The base
frequency is the frequency without pulse spreading. Pulse spreading (see pwm_set) will increase the
frequency by a factor of 4.

PARAMETERS

frequency is the frequency (in Hz).

RETURN VALUE

Actual frequency set. This will be the closest possible match to the requested frequency.

SEE ALSO

pwmOut

int pwmOut(unsigned int channel, float dutycycle);

Sets a voltage (0 to VDD on an analog output channel according to the percent duty cycle of the 1024­clock-count cycle.)

PARAMETERS

channel is the output channel to write to (0–3).
dutycycle is the percent duty (or on) cycle value of the 1024-clock-count cycle (i.e., 0.25).

RETURN VALUE

0 if successful

-1 if an invalid channel number is used

-2 if an invalid duty cycle was requested

SEE ALSO

pwmOutConfig

User’s Manual 65

4.6 Relay Output (LP3500 only)

int relayOut(int relay, int value)

A 10 ms low-to-high pulse sets the state of a relay. On power-up or brdInit() the relay contact will
go to the normally closed (NC) RESET contact.

PARAMETERS

relay

0 = the one relay

value is a value used to connect the relay common contact:

0 = relay normally closed (NC or RESET) (Parallel Port PG5)
1 = relay normally open (NO or SET) (Parallel Port PG4)

RETURN VALUE

0 if successful

-1 if the normal power source is not available

66 Fox (LP3500)

APPENDIX A. LP3500 SPECIFICATIONS

Appendix A provides the specifications for the LP3500, and
describes the conformal coating.

User’s Manual 67

A.1 Electrical and Mechanical Characteristics

Figure A-1 shows the mechanical dimensions for the LP3500.

0.120 dia

J4

J1

IN00 IN01 IN02 IN03 IN04 IN05 IN06 IN07 GND IN08 IN09 IN10 IN11 IN12 IN13 IN14 IN15

RN2

C15

C12

D5

D11

D7

C6

D4

D2

C8

D8

C10 C13

C2

RN1

C3

R6

R17

R7

R9

D1

R1

AIN0 AIN1 AIN2 AIN3

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND

(3.05)

D19

C16

U1

C36

C19

C20

R13

R16

D18

D15 D17

RP17

R57

Battery

R31

C22

C29

BT1

D13

R23

Q22

R30

C24

R18

C26

C33

R29

R20

R25

J3

C37

R26

R22

OUT9

OUT8

OUT7

+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND

D20

D21

C48

U3

C43

C44

Y1

R32

C40

PWM1

PWM2

PWM0

D26

R37

D25

Q8

Q5

R42

R38

Q6

C53

C51

R34

R41

R39

C55

U8

R40 C54

R36

C50

D22

VBAT

GND VIN GND

EXT

OUT1

OUT0

OUT2

OUT5

OUT4

OUT3

OUT6

D28

Q10

R43

R33

Y2

R44

R45

C59

C60

U9

S1

RESET

J2

GND

J8

RELAY

D30

D34

Q17

Q16

K1

Q13

D32

C61

Q12

R47

R48

U10

R50
R49

J5

U11

RP13

PROGRAM

C67

U12

D33Q14

J6

C66

C64

U13

R51

C65

RP14

PORT

NC

COM

NO

R56

R55

J9

C70

R58

Q20

R54

GND

(54)

(66)

2.11

DISPLAY

2.60

Please refer to the LP3500
footprint diagram later in this
appendix for precise header
locations.

0.29

(7.4)

2.84

(72)

3.65

(93)

3.65

(93)

(6.0)

0.245

0.45

(11)

Figure A-1. LP3500 Dimensions

68 Fox (LP3500)

T ableA-1 lists the electrical, mechanical, and environmental specifications for the LP3500.

Table A-1. LP3500 Specifications

Feature LP3500 LP3510

Microprocessor Rabbit 3000® at up to 7.4 MHz
EMI Reduction Spectrum spreader for ultra-low EMI (radiated emissions)
Flash Memory 512K (2 × 256K) 256K
SRAM 512K 128K

Socketed 3 V lithium coin

Backup Battery

connection for user-supplied external battery

Keypad/Display

Digital Inputs 16: fully protected 0–36 V DC, can handle short spikes ±40 V

Digital Outputs

Relay Output 1 C-form, 1 A, 30 V DC None

10: 8 sink up to 200 mA each, 36 V DC max.;

2 source up to 200 mA each, 36 V DC max.

Supports optional LCD/keypad module with

supports RTC and SRAM,

7 keys and 122 × 32 graphic display

Panasonic CR2330, 265 mA·h,

• Eight single-ended or four

differential inputs

• 1MΩ input impedance

• Sampling rate up to 200 samples/s

• Eight software-controlled ranges

from 0–1 V to 0–20 V DC

Single-Ended Inputs

• Resolution: 11 bits

Analog Inputs

None

• Accuracy: 8 bits

• 4 channels can be set individual ly for

4–20 mA with plug-in jumpers

• 1 channel has software-selectable

voltage-monitoring option

Differential Inputs

• Resolution: 12 bits

• Accuracy: 9 bits

Analog Outputs

User’s Manual 69

3 unfiltered pulse-width modulated,
1 kΩ output impedance

None

Table A-1. LP3500 Specifications (continued)

Feature LP3500 LP3510

6 shared high-speed, CMOS-compatible ports:

• 1 RS-485

Serial P orts

logic-level outputs; one RS-232 port needs to have wake-up capability

• 1 logic-level serial interface for optional add-ons

• 1 asynchronous clocked serial port dedicated for pro gramm in g

• 3 RS-232 (one 5-wire and one 3-wire or three 3-wire), jumper option for

Serial Rate Max. asynchronous baud rate = CLK/8
Real-Time Clock Yes

Timers

W atchdog/Supervisor Yes
Pulse-Width Modulators 10-bit free-running counter and four pulse-width registers

Power

Operating T emperatu re –40°C to +70°C
Humidity 5% to 95%, noncondensing

Ten 8-bit timers (6 cascadable from the first),

one 10-bit timer with 2 match registers

3 V to 30 V DC

20 mA (max.) @ 7.4 MHz,

100 µA max. @ 2 kHz (with linear regulator turned off)

• 0.1" headers

I/O and misc. signals: one 1 × 25, two 1 × 17 headers
Display: one 2 × 13 header

Connectors

• 2 mm headers

Programming Port: one 2 × 5 header
Serial Interface: one 2 × 4 socket

• Screw-terminal headers

Relay: one 3-position screw-terminal header

Board Size

70 Fox (LP3500)

2.60" × 3.65" × 0.45"

(66 mm × 93 mm × 11 mm)

A.1.1 Exclusion Zone

It is recommended that you allow for an “exclusion zone” of 0.25" (6 mm) around the
LP3500 in all directions when the LP3500 is incorporated into an assembly that includes
other printed circuit boards. This “exclusion zone” that you keep free of other components
and boards will allow for sufficient air flow, and will help to minimize any electrical or
electromagnetic interference between adjacent boards. An “exclusion zone” of 0.12"
(3 mm) is recommended below the LP3500. Figure A-2 shows this “exclusion zone.”

4.15

(105)

(18)

0.70

0.70

(18)

3.65

(93)

3.10

(79)

0.12

(3)

0.12

(3)

Exclusion

Zone

2.60

(66)

Figure A-2. LP3500 “Exclusion Zone”

When using the LP3500 with the Prototyping Board, do not install any components in the
prototyping area on the Prototyping Board between the LP3500 and the Prototyping
Board.

User’s Manual 71

A.1.2 Headers

The LP3500 uses 0.1" IDC headers at J1–J4 for physical connection to other boards. J5,
the programming port, is a 2 × 5 header with a 2 mm pin spacing.

Figure A-3 shows the LP3500 footprint. These values are relative to the mounting hole.

J1

J2

3.040

(77.2)

2.640

(67.1)

0.100

(2.54)

J6

J5

J4

PROGRAM

PORT

0.590

(15.0)

0.390

(9.9)

J8

J9

0.240

(6.1)

0.320

(8.1)

0.360

(9.1)

(1.0)

0.040

(5.1)

0.200

1.800

(20.0)

0.787

1.820

(45.7)

2.200

(46.2)

(55.9)

Figure A-3. User Board Footprint for LP3500

72 Fox (LP3500)

A.2 Conformal Coating

The areas around the 32 kHz real-time clock crystal oscillator has had the Dow Corning
silicone-based 1-2620 conformal coating applied. The conformally coated area is shown
in Figure A-4. The conformal coating protects these high-impedance circuits from the
effects of moisture and contaminants over time.

Conformally
coated area

OUT1

RESET

OUT0

OUT2

OUT4

OUT3

Q10

Y2

C61

Q12

R47

U10

S1

R50
R49

J5

D30

R48

Q16

Q13

U11

C66

RP13

PROGRAM

PORT

GND

J8

RELAY

D34

Q17

K1

D32

C67

U12

D33Q14

J6

C64

U13

C70

R51

C65

Q20

RP14

NC

COM

NO

R56

R55

J9

DISPLAY

R58

R54

GND

J1

IN00 IN01 IN02 IN03 IN04 IN05 IN06 IN07 GND IN08 IN09 IN10 IN11 IN12 IN13 IN14 IN15

D2

D1

J4

Q22

D13

C24

R18

J3

U1

D15 D17

C22

R23

R30

C26

R20

R22

D19

C36

RP17

R57

Battery

R31

C29

BT1

C33

R29

R25

C37

R26

D18

C16

RN2

C19

C15

C12

C20

D5

D11

D7

C6

D4

C8

D8

C10 C13

C2

RN1

R13

C3

R6

R16

R17

R7

R9

R1

AIN0 AIN1 AIN2 AIN3

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND

OUT9

OUT8

OUT5

OUT7

OUT6

+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND

R42

R38

Q6

R39

R40 C54

D28

D26

Q8

R43

R33

C53

R41

R44

C55

R45

C59

C60

U9

J2

D20

R37

D25

Q5

D21

C48

C51

R34

U3

U8

C43

C44

R36

C50

Y1

R32

C40

D22

PWM1

PWM2

PWM0

VBAT

GND VIN GND

EXT

Figure A-4. LP3500 Areas Receiving Conformal Coating

Any components in the conformally coated area may be replaced using standard soldering
procedures for surface-mounted components. A new conformal coating should then be
applied to offer continuing protection against the effects of moisture and contaminants.

NOTE: For more information on conformal coatings, refer to Technical Note 303, Con-

formal Coatings.

User’s Manual 73

A.3 Jumper Configurations

Figure A-5 shows the header locations used to configure the various LP3500 options via
jumpers.

Top Side

J3

JP6

JP11

JP4

JP5

CTS RTS

JP3

JP2

JP1

GND

OUT0

OUT1

OUT2

OUT3

Bottom Side

OUT8

OUT9

GND +KGND RxE TxE GND RxC TxC GND RxB TxB GND + 485 

OUT4

OUT5

OUT6

OUT7

JP7

JP12

JP8

U6

U2

JP13

JP9

420 mA

AIN3

AIN2

AIN1

AIN0

AIN6

AIN5

AIN4

AIN3

AIN2

AIN1

AIN0

PROGRAM

PORT

U7

VBAT

VIN

EXT

GND

GND

GND

JP10

GND

AIN7

PWM2

PWM1

PWM0

Figure A-5. Location of LP3500 Configurable Positions

IN00

IN01

IN02

IN03

IN04

IN05

IN06

IN07

GND

IN08

IN09

IN10

IN11

IN12

IN13

IN14

IN15

74 Fox (LP3500)

Table A-2 lists the configuration options.

Table A-2. LP3500 Jumper Configurations

Header Description Pins Connected

None Voltage Option

1–2 AIN0 4–20 mA Option

A/D Converter Voltage/Current

J3

Measurement Options

JP1 RxE RS-232/Logic Level Select

JP2 TxE RS-232/Logic Level Select

JP3 RxC RS-232/Logic Level Select

3–4 AIN1 4–20 mA Option

5–6 AIN2 4–20 mA Option

7–8 AIN3 4–20 mA Option

1–2 RS-232 Level

2–3 Logic Level

1–2 RS-232 Level

2–3 Logic Level

1–2 RS-232 Level

2–3 Logic Level

Factory

Default

×

×

×

×

JP4 TxC RS-232/Logic Level Select

JP5 RxB RS-232/Logic Level Select

JP6 TxB RS-232/Logic Level Select

JP7 SRAM Size

JP8 Flash Memory Size

JP9 Flash Memory Size

JP10 Flash Memory Bank Select

1–2 RS-232 Level

2–3 Logic Level

1–2 RS-232 Level

2–3 Logic Level

1–2 RS-232 Level

2–3 Logic Level
1–2 128K LP3510

2–3 512K LP3500
1–2 128K/256K
2–3 512K

1–2 128K/256K LP3500
2–3 512K

1–2 Normal Mode
2–3 Bank Mode

×

×

×

×

×

User’s Manual 75

Table A-2. LP3500 Jumper Configurations (continued)

Header Description Pins Connected

JP11 Manufacturing Use 1–2

JP12 M anufacturing Use 1–2

JP13 M anufacturing Use 1–2

NOTE: The jumper connections on header J3 are made using standard slip-on jumpers.

All other jumper connections except those across JP11 and JP12 are made using 0 Ω
surface-mounted resistors. 390 Ω current-limiting resistors are used on JP11 and JP12.

Factory

Default

×
×
×

76 Fox (LP3500)

A.4 Use of Rabbit 3000 Parallel Ports

Figure A-6 shows the Rabbit 3000 parallel ports.

PD0PD7

Port D

Port E

Port F

Port G

(+Serial Ports)

Misc. I/O

Flash

PE0PE1, PE4PE5
PE2PE3, PE6PE7

PF1PF2

PF0, PF3PF7

PG3, PG7

PG0PG2, PG4PG6

/RES_IN
/IORD

/RESET,
/IOWR,
STATUS
SMODE0
SMODE1

PC0, PC2, PC4

PC1, PC3, PC5

PG2, PG6

PG3, PG7

PC6

PB1, PC7, /RES

PA0PA7

Port A

Port C

(Serial Ports B,C & D)

Port G

(Serial Ports E & F)

Programming

Port

(Serial Port A)

RAM

PB0PB5

PB6PB7

Port B

R

ABBIT

3000

Real-Time Clock

Watchdog

11 Timers

Slave Port

Clock Doubler

Backup Battery

Support

Figure A-6. LP3500 Rabbit-Based Subsystems

Table A-3 lists the Rabbit 3000 parallel ports and their use in the LP3500.

Table A-3. Use of Rabbit 3000 Parallel Port s

Port I/O Signal Output Function State

PA0 Input IN08
PA1 Input IN09
PA2 Input IN10
PA3 Input IN11
PA4 Input IN12
PA5 Input IN12
PA6 Input IN14
PA7 Input IN15

Pulled up

Pulled up
Pulled up

Pulled up

Pulled up

Pulled up
Pulled up

Pulled up

Low when external power

PB0 Input Power Input Detect

source is connected; high
for battery

PB1 Input CLKA

PB2 Input IN04

Pulled up when not driven
by programming port

Pulled up

User’s Manual 77

Table A-3. Use of Rabbit 3000 Parallel Ports (continued)

Port I/O Signal Output Function State

PB3 Input IN05
PB4 Input IN06
PB5 Input IN07

Pulled up

Pulled up

Pulled up

PB6 Output LCD Buffer Enable Inactive high
PB7 Output Serial Device Select Inactive high
PC0 Output TXD Serial Device Int.

Inactive high

Serial Port D

PC1 Input RXD Serial Device Int. Inactive high
PC2 Output RTS/TxC RS-232

Inactive high

Serial Port C

PC3 Input CTS/RxC RS-232 Inactive high
PC4 Output TxB RS-232

Inactive high

Serial Port B

PC5 Input RxB RS-232 Inactive high
PC6 Output TxA Programming Port

Inactive high

Serial Port A

PC7 Input RxA Programming Port Inactive high
PD0 Output OUT0 Inactive low
PD1 Output OUT1 Inactive low
PD2 Output OUT2 Inactive low
PD3 Output OUT3 Inactive low
PD4 Output OUT4 Inactive low
PD5 Output OUT5 Inactive low
PD6 Output OUT6 Inactive low
PD7 Output OUT7 Inactive low
PE0 Input IN00

Pulled up

PE1 Input IN01 Pulled up
PE2 Output OUT8 Inactive low
PE3 Output OUT9 Inactive low
PE4 Input IN02

Pulled up

PE5 Input IN03 Pulled up
PE6 Output LCD/Keypad Module Reset Line Inactive high
PE7 Output LCD/Keypad Module Device Select Inactive high

78 Fox (LP3500)

Table A-3. Use of Rabbit 3000 Parallel Ports (continued)

Port I/O Signal Output Function State

PF0 Output ADC Serial Clock Inactive high
PF1 Input ADC Busy Inactive low
PF2 Input Not used Pulled up
PF3 Output ADC Device Select Inactive high
PF4 Output PWM0 Inactive high
PF5 Output PWM1 Inactive high
PF6 Output PWM2 Inactive high

Low when external power

PF7 Output Powe r Enable Control

PG0 Output RS-485 Transmit Enable Inactive low
PG1 Output RS-232 Shutdown Control Inactive high

source is connected; high
for battery

PG2 Output TxF RS-485

Inactive high

Serial Port F

PG3 Input RxF RS-485 Inactive high
PG4 Output Relay Set Inactive low
PG5 Output Relay Reset Inactive low
PG6 Output TxE RS-232

Inactive high

Serial Port E

PG7 Input RxE RS-232 Inactive high

User’s Manual 79

80 Fox (LP3500)

APPENDIX B. PROTOTYPING BOARD

Appendix B describes the features and accessories of the Proto­typing Board included wit h the LP3500 Tool Kit, and explains
the use of the Prototyping Board to demonstrate the LP3500 and
to build prototypes of your own circuits.

The screw-terminal headers on the Prototyping Board facilitate
access to the LP3500 connector pins, and the Prototyping Board
is available for purchase separately.

User’s Manual 81

B.1 Mechanical Dimensions and Layout

Figure B-1 shows the mechanical dimensions and layout for the LP3500 Prototyping Board.

GND VIN GND VBAT EXT GND PWM2 PWM1 PWM0 GND AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 GND

S4

J23

IN15 IN14 IN13 IN12 IN11 IN10 IN09 IN08 IN07 IN06 IN05 IN04 IN03 IN02 IN01 IN00

J11

GND

VIN

J12

J1

J13

J41

J3

3 V VBAT

GND RxE TxE GND RxC TxC GND RxB TxB GND + 485  GND +K OUT9 OUT8 OUT7 OUT6 OUT5 OUT4 OUT3 OUT2 OUT1 OUT0

J22

J2

J4

J42

J21

VIN

VIN

GND

GND

VIN

GND

R1

J43

4.14

(105)

S1

S2

S3

RN1

GND

VIN

(87)

3.41

GND

VIN

DS4 DS3 DS2 DS1

D1

J44

PWR

J5

Figure B-1. LP3500 Prototyping Board Dimensions

Table B-1 lists the electrical, mechanical, and environmental specifications for the Proto­typing Board.

Table B-1. RCM3000/LP3500 Prototypi ng Board Specifications

Parameter Specification

Board Size 3.41" × 4.14" × 0.45" (87 mm × 105 mm × 11 mm)
Operating Temperature –40°C to +70°C
Humidity 5% to 95%, noncondensing
Prototyping Area 2.2" × 3.4" (56 mm × 86 mm) throughhole, 0.1" spacing

82 Fox (LP3500)

B.2 Using the Prototyping Board

B.2.1 Interface to LP3500

The Prototyping Board serves as a convenient interface for the LP3500, extending the IDC
headers to convenient screw-terminal connectors, and provides interfaces to the AC
adapter included with the Tool Kit and to a user-supplied external battery.

Figure B-2 shows the pinouts for the Prototyping Board.

Digital

IN04

IN05

Inputs

IN06

IN07

J1

IN08

IN09

IN10

IN11

IN12

IN13

IN14

IN15

IN15 IN14 IN13 IN12 IN11 IN10 IN09 IN08 IN07 IN06 IN05 IN04 IN03 IN02 IN01 IN00

J11

J22

J2

J21 J23

GND

AIN0

AIN1

AIN2

AIN3

AIN4

AIN5

AIN6

AIN7

GND

PWM0

PWM1

PWM2

GND

VBAT EXT

GND

VIN

GND

GND VIN GND VBAT EXT GND PWM2 PWM1 PWM0 GND AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 GND

S4

Pushbutton

S3

Analog

Inputs

PWM

Outputs

Power

Supply

Switches

S2

S1

RS-232

RS-485

Digital

Outputs

External

Battery

Connection

GND

RxE

TxE

GND

RxC/CTS

TxC/RTS

GND

RxB

TxB

GND

RS-485+

RS-485

GND

K

+K

OUT9

OUT8

OUT7

OUT6

OUT5

OUT4

OUT3

OUT2

OUT1

OUT0

3 V VBAT

J6

J3

J5

J12

J41 J42

J43

R1

J44

D1

PWR

Raw DC

Power

Input

IN00

IN01

IN02

IN03

J4

DS4 DS3 DS2 DS1

LEDs

Figure B-2. LP3500 Prototyping Board Pinout

NOTE: The LP3500 must be plugged in to the Prototyping Board

as described in

Chapter 2, “Getting Started,” for these signals to be available.

User’s Manual 83

B.2.2 Demonstration Board

The Prototyping Board is actually both a demonstration board and a prototyping board.
As a demonstration board, it can be used to demonstrate the functionality of the

LP3500
right out of the box without any modifications to either board. There are no jumpers or dip
switches to configure or misconfigure on the Prototyping Board so that the initial setup is
very straightforward.

The Prototyping Board comes with the basic components necessary to demonstrate the
operation of the LP3500. Four LEDs (DS1–DS4) are connected to PD0–PD3, and four
switches (S1–S4) are connected to PE0, PE1, PE4, and PE5 to demonstrate the i nterface to
the Rabbit 3000 microprocessor.

NOTE: Before running sample programs based on the LP3500, you will have to plug in

the LP3500 to the Prototyping Board

as described in Chapter 2, “Getting Started.”

B.2.3 Prototyping Area

Small to medium cir cuit s can b e pro toty ped u sin g po int -

to-point wiring with 20 to 30 A WG
wire on the prototyping area. Raw DC input, VIN, and GND lines surround the prototyp­ing area.

The resistor pack located next to the pushbutton switches may be removed to disconnect
the LEDs and pushbutton switches from the Prototyping Board circuits, giving your
LP3500 exclusive access to what you may develop in the prototyping area.

+K and VIN are tied together by resistor R1 located beside header J44. Cut off R1 if you
intend to supply a separate +K.

84 Fox (LP3500)

APPENDIX C. LCD/KEYPAD MODULE

An optional LCD/keypad is available for the LP3500. Appendix C
describes the LCD/keypad and provides the software APIs to
make full use of the LCD/keypad.

C.1 Specifications

Two optional LCD/keypad modules—with or without a panel-mounted NEMA 4 water­resistant bezel—are available for use with the LP3500. They are shown in Figure C-1.

LCD/Keypad Modules

Figure C-1. LCD/Keypad Modules Models

LCD/keypad modules sold prior to the launch of the LP3500 might not be voltage­compatible with the LP3500. Contact your Z-World sales representative or your authorized
Z-World distributor for further assistance in purchasing an LCD/keypad module.

Mounting hardware and a 127 mm (5") or 60 cm (24") extension cable are also available
for the LCD/keypad module through your Z-World sales representative or authorized
distributor.

User’s Manual 85

Table C-1 lists the electrical, mechanical, and environmental specifications for the
LCD/keypad module.

Table C-1. LCD/Keypad Specifications

Parameter Specification

Board Size

Bezel Size

Temperature

2.60" × 3.00" × 0.75"
(66 mm × 76 mm × 19 mm)

4.50" × 3.60" × 0.30"
(114 mm × 91 mm × 7.6 mm)

Operating Range: 0°C to +50°C
Storage Range: –40°C to +85°C

Humidity 5% to 95%, noncondensing
Power Consumption

1.5 W maximum with backlight on

*

Connections Connects to header J9 (Display Interface) on LP3500
LCD Panel Size 122 × 32 graphic display
Keypad 7-key keypad
LEDs Seven user-programmable LEDs

* The backlight adds approximately 650 mW to the power consumption.

The LCD/keypad module has 0.1"
IDC header sockets at J1, J2, and J3

0.100

(2.5)

for physical connection to other
boards or ribbon cables. Figure C-2
shows the LCD/keypad module foot­print. These values are relative to one

(15.4)

of the mounting holes.

0.607

J1

(19.5)

(40.6)

1.600

0.200

(5.1)

0.768

0.500

(12.7)

J2

1.450

(36.8)

2.200

(55.9)

J3

Figure C-2. User Board Footprint for

LCD/Keypad Module

86 Fox (LP3500)

C.2 Contrast Adjustment

Depending on when you acquired your LCD/keypad module, you will be able to set the
contrast on the LCD display by adjusting the potentiometer at R2 or by setting the voltage
for 2.8 V by setting the jumper across pins 1–2 on header J5 as shown in Figure C-3. Only
one of these two options is available on a given LCD/keypad module

LCD/Keypad Module Jumper Configurations

Header

Description

2.8 V

Pins

Connected

12

Factory

Default

×

J5

Contrast

Adjustment

J5

3

4

1

2

J5

3

4

OTHER

3.3 V
n.c. = 5 V

KP1

3.3 V

5 V

R2

C2

U3

LCD1

Q1

R25

R8

R26

R11

J5

LP3500

2.8 V

R13

1

Q4

2

R17

C17

C1

D2

C6

C3

R1

C9

C7

U4

R14

R20

Q6

Q7

R23

R22

U6

U7

RN1

J4

34

n.c.

D1

JP1

C5

U2

R4
R5

C11

R10

R9

R19

Q3

Q2

U5

C14

R24

C15

C16

C4

R3

U1

C10

CR1

R6

C13

C12

R7

J1

R12

R15

R18

R16

Q5

R21

Q8

J2

DISPLAY

BOARD

Part No. 101-0541

Figure C-3. LCD/Keypad Module Contrast Adjustment

NOTE: Older LCD/keypad modules that do not have a header at J5 or a contrast adjust-

ment potentiometer at R2 are limited to operate only at 5 V, and will not work with the
LP3500. The older LCD/keypad modules are no longer being sold.

User’s Manual 87

C.3 Keypad Labeling

The keypad may be labeled according to your needs. A template is provided in Figure C-4
to allow you to design your own keypad label insert.

1.10

(28)

2.35

(60)

Figure C-4. Keypad Template

To replace the keypad legend, remove the old legend and insert your new legend prepared
according to the template in Figure C-4. The keypad legend is located under the blue key­pad matte, and is accessible from the left only as shown in Figure C-5.

Keypad label is located
under the blue keypad matte.

Figure C-5. Removing and Inserting Keypad Label

88 Fox (LP3500)

C.4 Header Pinouts

Figure C-6 shows the pinouts for the LCD/keypad module.

DB6B

DB4B

DB2B

DB0B

A1B

A3B

GND

LED7

LED5

LED3

LED1

J1

/RES

VCC

LED4

LED7

GND

LED2

LED5

LED6

/CS

+5BKLT

LED3

LED4

LED2

LED1

/RES

/CS

VCC

+5BKLT

J2

GND

GND

DB7B

DB6B

DB4B

DB7B

DB5B

DB5B

DB3B

DB2B

DB3B

DB1B

DB0B

A1B

A0B

DB1B

A0B

A2B

A3B

A2B

GND

J3

GND

LED6

GND

GND

Figure C-6. LCD/Keypad Module Pinouts

NOTE: Note that there are no connections from headers J2 and J3 of the LCD/keypad

module to the LP3500. These headers interface to the keypad and to the LEDs on the
LCD/keypad module, and need to be interfaced to the digital I/O on the LP3500 if you
need keypad or LED functionality. The LEDs may be driven by an active signal either
in software or in hardware.

C.4.1 I/O Address Assignments

The LCD and keypad on the LCD/keypad module are addressed by the /CS strobe as
explained in Table C-2.

Table C-2. LCD/Keypad Module Address Assignment

Address Function

0xE000 Device select base address (/CS)
0xExx0–0xExx7 LCD control
0xExx8 LED enable
0xExx9 Not used
0xExxA 7-key keypad
0xExxB (bits 0–6) 7-LED driver
0xExxB (bit 7) LCD backlight on/off
0xExxC–ExxF Not used

User’s Manual 89

C.5 Bezel-Mount Installation

This section describes and illustrates how to bezel-mount the LCD/keypad module.
Follow these steps for bezel-mount installation.

1. Cut mounting holes in the mounting panel in accordance with the recommended dimen­sions in Figure C-7, then use the bezel faceplate to mount the LCD/keypad module onto
the panel.

0.125 D, 4x

(3)

CUTOUT

0.230

(5.8)

2.870

(72.9)

3.100

(78.8)

Figure C-7. Recommended Cutout Dimensions

3.400

(3.3)

0.130

(86.4)

2. Carefully “drop in” the LCD/keypad module with the bezel and gasket attached.

90 Fox (LP3500)

3. Fasten the unit with the four 4-40 screws and washers included with the LCD/keypad
module. If your panel is thick, use a 4-40 screw that is approximately 3/16" (5 mm)
longer than the thickness of the panel.

Bezel/Gasket

Panel

DISPLAY BOARD

U1

C1

R2

R9

R10

Q2 Q3

C2

R5

R4

R3

R11

R12

Q5 Q6

Q4

RN1

U4

C8

Q1

D1

R1

KP1

J2

U3

U2

C4

C3

R17

J1

R7

R8

R6

R14

R13

R15

R18

C5

Q8

Q7

C7

R16

J3

C6

Figure C-8. LCD/Keypad Module Mounted in Panel (rear view)

Carefully tighten the screws until the gasket is compressed and the plastic bezel face­plate is touching the panel.

Do not tighten each screw fully before moving on to the next screw . Apply only one or
two turns to each screw in sequence until all are tightened manually as far as they can
be so that the gasket is compressed and the plastic bezel faceplate is touching the panel.

User’s Manual 91

C.6 Connect the LCD/Keypad Module to Your LP3500

The LCD/keypad module can be located as far as 2 ft. (60 cm) away from the LP3500, and
is connected via a ribbon cable as shown in Figure C-9.

KP1

J2

RN1

C8

U4

C7

J3

C6

R9

Q2 Q3

R10

R11

Q4

R12

Q5 Q6

R13

R14

Q7

R18

R15

Q8

C5

R16

D1

J5

R25

R26

R2

R3

R4

R5

R6

R7

R8

Q1

R1

C1

U1

C2

DISPLAY BOARD

U2

C3

R17

C4

U3

J1

Pin 1

EXT

GND

DISPLAY

R55

R56

NO

COM

NC

RELAY

PORT

PROGRAM

RP14

R54

Q20

C65

R58

R51

RP13

C70

U13

C64

J9

C66

J6

U11

D33Q14

U12

C67

D32

Q13

K1

Q16

Q17

D34

J8

GND

OUT2

OUT0

OUT1

GND VIN GND

VBAT

PWM0

PWM2

J2

J5

R49

R50

RESET

S1

U9

U10

C60

R48

C59

R45

R47

R44

Q12

C61
Y2

R33

R43

Q10

D28

D30

OUT6

OUT4

OUT3

OUT5

PWM1

D22

C40

R32

Y1

C50

R36

R40 C54

C44

BT1

C43

U8

U3

C55

R39

R41

R34

C51

C53

Q6

C48

R38

D18

D21

R42

Q5

Q8

D25

R37

D26

D20

+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND

OUT7

OUT8

OUT9

C37

R29

R31

R57

C36

D19

R22

R26

R25

R20

C33

C26

R30

R23

C29

C22

Battery

RP17

D15 D17

U1

AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND

AIN0 AIN1 AIN2 AIN3

R1

J3

D1

R9

R7

R17

R18

R16

R6

C3

R13

RN1

C2

C10 C13

C24

D8

C8

Q22

D2

D4

C6

D7

D13

D11

D5

C20

C12

C15

RN2

C19

C16

IN00 IN01 IN02 IN03 IN04 IN05 IN06 IN07 GND IN08 IN09 IN10 IN11 IN12 IN13 IN14 IN15

J1

J4

Pin 1

Figure C-9. Connecting LCD/Keypad Module to LP3500

Note the locations and connections relative to pin 1 on both the LP3500 and the LCD/key­pad module.

Z-World offers two different lengths of ribbon cable–5" (127 mm) and 2 ft. (60 cm).
Contact your authorized Z-World distributor or a Z-World sales representative at
[phone] for more information.

92 Fox (LP3500)

C.7 LCD/Keypad Module Function APIs

The LCD/keypad module is normally off. Add the devPowerSet function call after

brdInit to turn on the LCD/keypad buffers.

brdInit(); // Initialize the LP3500
devPowerSet(DISPDEV, 1); // Enable LCD/keypad buffer

C.7.1 LEDs

When power is applied to the LCD/keypad module for the first time, the red LED (DS1)
will come on, indicating that power is being applied to the LCD/keypad module. The red
LED is turned off when the brdInit function executes.

One function is available to control the LEDs, and can be found in the LCD122KEY7.LIB
library in the Displays directory.

void dispLedOut(int led, int value);

LED on/off control. This function will only work when the LCD/keypad module is connected to the
LP3500.

PARAMETERS

led is the LED to control.

0 = LED DS1
1 = LED DS2
2 = LED DS3
3 = LED DS4
4 = LED DS5
5 = LED DS6
6 = LED DS7

value is the value used to control whether the LED is on or off (0 or 1).

0 = off
1 = on

RETURN VALUE

None.

SEE ALSO

brdInit

User’s Manual 93

C.7.2 LCD Displ a y

The functions used to control the LCD display are contained in the GRAPHIC.LIB library
located in the Dynamic C DISPLAYS\GRAPHIC library directory. When x and y coordi-
nates on the display screen are specified, x can range from 0 to 121, and y can range from
0 to 31. These numbers represent pixels from the top left corner of the display.

void glInit(void);

Initializes the display devices, clears the screen.

RETURN VALUE

None.

SEE ALSO

glDispOnOFF, glBacklight, glSetContrast, glPlotDot, glBlock, glPlotDot,
glPlotPolygon, glPlotCircle, glHScroll, glVScroll, glXFontInit, glPrintf,
glPutChar, glSetBrushType, glBuffLock, glBuffUnlock, glPlotLine

void glBackLight(int onOff);

Turns the display backlight on or off.

PARAMETER

onOff turns the backlight on or off

1—turn the backlight on
0—turn the backlight off

RETURN VALUE

None.

SEE ALSO

glInit, glDispOnoff, glSetContrast

void glDispOnOff(int onOff);

Sets the LCD screen on or off. Data will not be cleared from the screen.

PARAMETER

onOff turns the LCD screen on or off

1—turn the LCD screen on
0—turn the LCD screen off

RETURN VALUE

None.

SEE ALSO

glInit, glSetContrast, glBackLight

94 Fox (LP3500)