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Fox LP3500
User Manual
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Rabbit Fox LP3500 User Manual

Fox (LP3500)
C-Programmable Single -Board Compu ter
User’s Manual
019–0111 • 081121–L
Fox (LP3500) User’s Manual
©2002–2008 Digi International Inc. • All rights res erved.
No part of the contents of this manual may be reproduced or transmitted in any form or by any means without the express written permission of Digi International.
Permission is granted to make one or more copies as long as the copyright page contained therein is included. These copies of the manuals may not be let or sold for any reason without the express written permission of Digi International.
Digi International reserves the right to make changes and
improvements to its products without providing n otice.
T r ade mark s
Rabbit and Dynamic C are registered trademarks of Digi International Inc.
Rabbit 2000 and RabbitCore are trademarks of Digi International Inc.
The latest revision of this manual is available on the Rabbit Web site, www.rabbit.com, for free, unregistered download.
Digi International Inc.
www.rabbit.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.................................................................................................................................30
3.6 A/D Converter Inputs (LP3500 only) .................................................................................................31
3.7 PWM Outputs.....................................................................................................................................33
3.8 Relay Output Circuit (LP3500 only) ..................................................................................................34
3.9 Serial Programming Cable..................................................................................................................35
3.9.1 Changing Between Program Mode and Run Mode ....................................................................35
3.9.2 Standalone Operation of the LP3500..........................................................................................36
3.10 Other Hardware.................................................................................................................................36
3.10.1 Spectrum Spreader....................................................................................................................36
3.11 Memory.............................................................................................................................................37
3.11.1 SRAM .......................................................................................................................................37
3.11.2 Flash Memory...........................................................................................................................37
User’s Manual
Chapter 4. Software 39
4.1 Upgrading Dynamic C ....................................................................................................................... 41
4.1.1 Patches and Bug Fixes................................................................................................................ 41
4.1.2 Extras.......................................................................................................................................... 41
4.2 Sample Programs................................................................................................................................42
4.2.1 Power Modes..............................................................................................................................42
4.2.2 Digital I/O...................................................................................................................................42
4.2.3 Serial Communication................................................................................................................ 43
4.2.4 A/D Converter Inputs.................................................................................................................43
4.2.5 PWM Outputs............................................................................................................................. 44
4.2.6 Relay Output...............................................................................................................................44
4.2.7 Vcc Monitoring .......................................................................................................................... 44
4.2.8 LP3500 Calibration .................................................................................................................... 44
4.2.9 LCD/Keypad Module Sample Programs....................................................................................45
4.3 LP3500 Libraries................................................................................................................................46
4.4 LP3500 Function Calls....................................................................................................................... 47
4.4.1 LP3500 Power Modes................................................................................................................ 47
4.4.2 Board Initialization..................................................................................................................... 51
4.4.3 Digital I/O...................................................................................................................................52
4.4.4 Serial Communication................................................................................................................ 54
4.4.5 A/D Converter Inputs.................................................................................................................56
4.4.6 Vcc Monitoring (LP3500 only)..................................................................................................68
4.4.7 PWM Outputs............................................................................................................................. 69
4.5 Relay Output (LP3500 only) ..............................................................................................................70
Appendix A. LP3500 Specifications 71
A.1 Electrical and Mechanical Characteristics ........................................................................................72
A.1.1 Exclusion Zone..........................................................................................................................75
A.1.2 Headers...................................................................................................................................... 76
A.2 Conformal Coating............................................................................................................................77
A.3 Jumper Configurations......................................................................................................................78
A.4 Use of Rabbit 3000 Parallel Ports..................................................................................................... 81
Appendix B. Prototyping Board 85
B.1 Mechanical Dimensions and Layout................................................................................................. 86
B.2 Using the Prototyping Board............................................................................................................. 87
B.2.1 Interface to LP3500 ................................................................................................................... 87
B.2.2 Demonstration Board................................................................................................................. 88
B.2.3 Prototyping Area........................................................................................................................ 88
Appendix C. LCD/Keypad Module 89
C.1 Specifications.....................................................................................................................................89
C.2 Contrast Adjustment..........................................................................................................................91
C.3 Keypad Labeling................................................................................................................................92
C.4 Header Pinouts...................................................................................................................................93
C.4.1 I/O Address Assignments.......................................................................................................... 93
C.5 Bezel-Mount Installation................................................................................................................... 94
C.6 Connect the LCD/Keypad Module to Your LP3500......................................................................... 96
C.7 LCD/Keypad Module Function Calls................................................................................................97
C.7.1 LEDs.......................................................................................................................................... 97
C.7.2 LCD Display..............................................................................................................................98
C.7.3 Keypad.....................................................................................................................................115
C.8 Sample Programs............................................................................................................................. 118
Appendix D. Plastic Enclosure 119
D.1 Assembly Instructions..................................................................................................................... 120
D.2 Dimensions......................................................................................................................................1 22
Fox (LP3500)
Appendix E. Power Management 123
E.1 External Power Supply .....................................................................................................................123
E.2 Batteries and External Battery Connections.....................................................................................125
E.2.1 Replacing the Backup Battery..................................................................................................126
E.2.2 Power to VRAM Switch...........................................................................................................126
E.2.3 Reset Generator........................................................................................................................127
E.3 Chip Select Circuit ...........................................................................................................................127
Appendix F. Running a Sample Program 129
Index 131
Schematics 135
User’s Manual
Fox (LP3500)

1. INTRODUCTION

The LP3500 is a low-po we r sin gle -bo ar d co mp uter wi th bui lt-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 chann els 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 Stati c 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 T o ol 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 SF1000 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.
Visit our Web 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 man ual 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 Getting Started instructions.
• Dynamic C CD-ROM, with complete product documentation on disk.
• Programming cable, used to connect your PC serial port to the LP3500.
• Universal AC adapter, 12 V DC, 1 A (includes Canada/Japan/U.S., Australia/N.Z.,
U.K., and European style plugs). 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 standoffs with mounting screws.
If you are using another power supply, it must provide
• Screwdriver.
• Rabbit 3000 Processor Easy Reference poster.
• Registration card.
Programming
DIAG
PROG
Fox (LP3500)
The LP3500 is a low-power single-board computer designed to operate reliably virtually any place it is deployed, especially where power is limited. These Getting Started instructions included with the Tool Kit will help you get your LP3500 up and running so that you can run the sample programs to explore its capabilities and develop your own applications.
Tool Kit Contents
The LP3500 Tool Kit contains the following items:
• Dynamic C CD-ROM, with complete product documentation on disk.
• Programming cable, used to connect your PC serial port to the LP3500.
• Universal AC adapter, 12 V DC, 1 A (includes Canada/Japan/U.S., Australia/N.Z., U.K., and
European style plugs).
• 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.
• Plastic enclosure with four screws.
• Four standoffs with mounting screws.
• Screwdriver.
•
Getting Started instructions.
• Rabbit 3000 Processor Easy Reference poster.
• Registration card.
Visit our online Rabbit store at www.rabbit.com/store/ for the latest information on peripherals and accessories that are available for the LP3500 single-board computers.
Step 1 — Install Dynamic C
Before doing any development, you must install Dynamic C. Insert the CD from the Development Kit in your PC’s CD-ROM drive. If the installation does not auto-start, run the setup.exe program in the root directory of the Dynamic C CD. Install any Dynamic C modules after you install Dynamic C
Rabbit and Dynamic C are registered trademarks of Digi International Inc.
Getting Started
Instructions
Cable
(101-0513)
®
I N 1 2
I
N 1 1
I
N 1 0
I N 0
9
I N 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
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
Prototyping Board
.
J23
I
N 1 5 I N
1 4
I N 1 3
V I N
J 1 2
J22
J 1 1
G N D
GND
VIN
J4
J42
Stand-Offs
and Screws
GND VIN GND VBAT EXT GND PWM2 PWM1 PWM0 GND AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 GND
J21
J2
VIN
GND
VIN
GND
R1
J44
J43
Universal
AC Adapter
S1
S2
S3
S4
RN1
G
V
N
I
N
D
G
V
N
I N
D
1 S D
2 S D
3 S
D
4 S D
D1
R W P
J5
Screwdriver
with Plugs
Plastic Enclosure
Figure 1. LP3500 Tool Kit
4 Fox (LP3500)

1.4.2 Software

The LP3500 is programmed using version 7.26P or later of Rabbit’s Dynamic C. A com-
patible version is inclu ded o n the 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.
Starting with Dynamic C version 9.60, Dynamic C includes the popular µC/OS-II real­time operating system, point-to-point protocol (PPP), FAT file system, RabbitWeb, and other select libraries. Rabbit also offers for purchase the Rabbit Embedded Security Pack featuring the Secure Sockets Layer (SSL) and a specific Advanced Encryption Standard (AES) library.
In addition to the Web-based technical support included at no extra charge, a one-year telephone-based technical support subscription is also available for purchase.
V isit o ur Web site at www.rabbit.com for further information and complete documentation.
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 o r 100 µ V/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 T ool 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.
• Rabbit 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. Rabbit 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 (Part No. 101-0601), and a remote panel-mounted version with bezel (Part No. 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 Rabbit distributor, and are also available on our Web site at www.rabbit.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 standoffs to your
LP3500 series board as shown in Figure 2.
OUT
J4
J1
IN00 IN01 IN02 IN03 IN04 IN05 IN06 IN07
RN2
C15
C12
C20
D5
D2
C2
RN1
C3
R7
R9
R1
AIN0 AIN1 AIN2 AIN3
D11
D13
D7
R23
C6
D4
Q22
C8
D8
R30
C24
C10 C13
R13
R6
R16
R18
R17
C26
C33
R29
R20
R25
J3
C37
R26
R22
PWM0
GND
IN08 IN09 IN10 IN11 IN12 IN13 IN14 IN15
D1
AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND
OUT9
OUT8
OUT7
D19
C16
U1
C36
C19
D18
D15 D17
RP17
Battery
R57
R31
U3
C22
C29
C43
BT1
C44
C50
Y1
R32
C40
D22
PWM
PWM2
VBAT
GND VIN GND
1
EXT
+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND
D20
D26
R37
D25
Q8
Q5
R42
D21
C48
R34
U8
R40 C54
R36
J2
R43
R33
R38
Q6
C53
C51
R41
R39
R44
C55
R45
C59
R48
C60
U10
U9
RP13
S1
RESET
R50
R49
J5
PROGRAM
PORT
OUT0
OUT2
OUT5
OUT4
OUT3
OUT6
D28
Q10
Y2
C61
Q12
R47
U11
C66
RP14
GND
1
J8
RELAY
D30
D34
Q17
Q16
K1
Q13
D32
C67
U12
D33Q14
J6
C64
U13
C70
R51
R58
C65
Q20
R54
GND
NC
COM
NO
R56
R55
J9
DISPLAY
Figure 2. Attach Stand-Offs and Remove Battery Cap
User’s Manual 9
2. Attach the LP3500 main board to the Prototyping Board as shown in Figure 3. Press the pins from the headers on the bottom side of the LP3500 board firmly into the
corresponding header sockets 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
U7
C
RESET
6 3
Q19
Q18
S2
U6
R53 R52
R46
Q21
C
C
RP11
6
6
9
8
RP12
Q15
D31
LP3500
R27
C38
R21
R
R28
R19
2 4
D3
C27
C34
J
R15
P
R8
1 0
R5
C
R14
4
J
1
C9
P 9
C14
RP1
D9
C 7
RP2
C 5
C4
C1
J P 1
2
RP4
RP3
VCC
R4
R12
GND
R3
R11
J
+K
R2
R10
P
C
3
07
815
IN
1 8
J P 1
J P
2
C 4
2
U2
J
C17
C23
P
8
D6
D12
D10
J
J
P
P
7 1 1
C30
D16
R P 9
C28
R P
RP10
8
D14
R
C
Q7
Q11
5
J
4
J
9
9
P
P
C25
5
6
J P 4
C 3
1
Q
D23
Q4
9
Q3
R35
D29
D27
D24
J23
IN 1 5 IN
1
J
4
1
IN
1
1 3 IN
1 2 IN
1 1
IN
1 0 IN
0 9 IN
0 8
G
V
G
N
IN
D
N
J
D
1
IN
2
0 7 IN
0 6 IN
0 5 IN
J1
0 4 IN
0 3 IN
J
1
0 2 IN
0 1 IN
J 1
3
0 0 G
J41
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
GND
VIN
J4
J42
J2
J2
J4
J43
VIN
GND
VIN
GND
R1
D
G
V
N
IN
D
D1
R
W
J44
P
J5
GND VIN GND VBAT EXT GND PWM2 PWM1 PWM0 GND AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 GND
S4
J21
J22
S3
G
V
N
IN
1 S
D
2 S
D
3 S D
4 S D
S1
S2
RN1
Prototyping
Board
Figure 3. Attach LP3500 Main Board to Prototyping Board
10 Fox (LP3500)
3. 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 (Part No. 101-0513), whic h is supplie d with the LP3500 Tool Kit. Other Rabbit programming cables with clear or blue shrink wrap 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.) 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.
Header J5 is between the LP3500 and the Prototyping Board
J5
PROGRAM
PORT
PC COM port
Colored edge
To
Programming
Cable
PROG
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
IN
0
8
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
IN 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
D3
R15
R8
J
1
1
R5
R14
C9
C14
RP1
D9
C
7
RP2
C
5
C17
C4
C1
G
V
N
I
N
D
VCC
R4
GND
R3
+K
R2
07
815
IN
J P 1
J
P
2
C23
D6
D12
D10
J P 1
2
RP4
C30
RP3
D16
C28
P
R12
8
D14
R11
J
J
J
P
R10
P
P
C
C25
5
3
6
1
8
J P
4
R35
C 3
1
J4
J42
J23
I
N
X
Do not connect
AC adapter to
VBAT terminal
J5
Figure 4. Programming Cable and Power Supply Connections
Red
DIAG
R27
C38
R21
R
R28
R19
J22
2 4
J2
C27
C34
J
P 1 0
C 4
J
1
P
9
C 4 2
U2
J P
8
J
J
P
P
7
1
1
R P 9
R
R
C
5
4
9
9
D23
Q4
Q3
GND
VIN
J43
D24Q7D27
VIN
GND
RP10
Q11
Q
9
D29
R1
GND VIN GND VBAT EXT GND PWM2 PWM1 PWM0 GND AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 GND
/RESET
TP2
U7
J21
RESET
VIN
GND
S2
U6
R46
Q21
RP11
RP12
Q15
D31
D1
J44
J5
S3
S4
PORT
PROGRAM
C 6
3
Q19
Q18
R53
R52
G
V
N
I
N
D
C
C
6
6
9
8 G
V
N
I
N
D
1 S
D 2 S
D 3 S
D
4
S
D
R
W
P
shrink wrap
S1
S2
RN1
Remove slot cover,
1
insert tab into slot
Assemble
AC Adapter
Snap plug into place
2
NOTE: Some PCs now come equipped only with a USB port. It may be possible to use an
RS-232/USB converte r (Part No. 20- 151-0178) with t he programming c able supplied wi th the LP3500 Tool Kit. Note that not all RS-232/USB converters work with Dynamic C.
User’s Manual 11
4. Connect the power supply. First, prepare the AC adapter for the country where it will be used by selecting the plug.
The LP3500 Tool Kit presently includes Canada/Japan/U.S., Australia/N.Z., U.K., and European style plugs. Snap in the top of the plug assembly into the slot at the top of the AC adapter as shown in Figure 4, then press down on the spring-loaded clip below the plug assembly to allow the plug assembly to click into place.
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.
5. 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 ff icient voltage to prev ent a r eset f rom happeni ng, in which cas e you will 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
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
OUT9
OUT8
OUT7
OUT6
+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND
D19
D20
D26
C36
D18
RP17
R57
Battery
R31
BT1
R29
C37
PWM0
R37
D25
Q8
Q5
R42
D21
R38
C48
Q6
C53
C51
R34
R41
R39
R44
U3
C43
C44
R32
C40
PWM1
C55
U8
R40 C54
R36
C50
Y1
D22
VBAT
EXT
GND VIN GND
J2
PWM2
C16
U1
C19
D15 D17
C20
C22
C29
D13
R23
Q22
R30
C24
R13
R16
R18
C26
C33
R20
R25
J3
R26
R22
RESET switch
OUT0
OUT2
OUT5
OUT4
OUT3
GND
J8
RELAY
D30
D28
D34
Q17
Q16
Q10
R43
U9
K1
R33
Q13
D32
Y2
C61
Q12
U12
R47
R45
D33Q14
U11
J6
C66
C59
R48
C60
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
D31
D29
Q15
Q11
RP12
RP11
C68
D7
D5
D3
D1
A0
A2
GND
GND
R52
R53
Q18
DISP
C63
TP1
Q21
VRAM
J6
R46
RP15
S2
Q19
RESET
RESET
TP2
TP2
/RESET
/RESET
PROGRAM
PORT
PROGRAM
PORT
RESET switch
Figure 5. Locations of LP3500 RESET Switches
Reset switches are located on both sides of the LP3500 board.
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
Q9
RP10
OUT6
D24Q7D27
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
OUT4
OUT5
U5
U6
U7
U7
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
+K GND  485 + GND TxB RxB GND TxC RxC GND TxE RxE GND
OUT9
OUT8
Pull
OUT5
OUT7
OUT6
Plastic
Tab
DISPLAY
AIN0 AIN1 AIN2 AIN3
PWM1
AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 GND GND
PWM0
J2
PWM2
VBAT
EXT
GND VIN GND
GND
Figure 6. Remove Battery Tab
NOTE: Rabbit recommends that the battery tab not be removed until you are ready to
place the LP3500 in normal service with regular power connected through header J2.
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 dif f erent fold er, and a separate icon 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 on your desktop or in your Start menu.
If you are using a USB port to connect your computer to the LP3500, choose Options >
Project Options
Click OK.
and select “Us e USB to Serial Conver ter” on t he Communications tab.
Dynamic C assumes, by default, that you are using serial port COM1 on your PC when you are running a program. If you are LP3500 and go through a sequence
using COM1, then Dynamic C should detect the
of 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. You can change the serial port used by Dynamic C with 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.
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 PONG.C, which is in the Dynamic C SAMPLES folder. To run the program,
open it with the File menu (if it is not still open), then compile and run it by pressing F9 or 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 yo ur LP350 0 through a distr ibutor o r Rabbit partner, contact the
distributor or partner first for technical support.
If there are any problems at this point:
• Use the Dynamic C Help menu to get further assistance with Dynamic C.
• Check the Rabbit Technical Bulletin Board and forums at www.rabbit.com/support/bb/
and at www.rabbit.com/forums/.
• Use the Technical Support e-mail form at www.rabbit.com/support/. If the sample program ran fine, you are now ready to go on to explore other LP3500 fea-
tures 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
VIN
GND
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 × 25 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
External battery
70 µA
No No 46 µA
lator turned off)
(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
Low-
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
5 0.9216 MHz
6
7 16.384 kHz
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 the setpowersource function call, and this will lower the current draw to 100 µA.
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 wil l tur n of f if VIN i s not ava ilable at th e e xpirat ion of the timeout
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
.
100 kW
330 nF
+40 V
+36 V
Microprocessor
Spikes
Rabbit 3000
Normal Switching
Spikes
®
Levels
Pulling the digital inputs to Vcc will
+3.3 V
increase the current consumption by about 300 µA for each digital input.
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 of
D1
J5
R1
DS4 DS3 DS2 DS1
PWR
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 dig ital inputs may floa t, which may in creas e your cur -
rent consumption.
24 Fox (LP3500)
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