LASCAR MDM-1 User Manual

MDM-1

Multi-function Display Module

IRCN: 716 - Page 2 of 2 IRCN: 716 - Page 1 of 2

ADDITIONAL DATA: ACCESSORIES & COMPONENTS

Programmers Manufacturer PartNumber Web Site

Handheld Enclosures
Veronex Size 3 (Grey) Vero Electronics 75-227910G

Veronex Size 3 (Black+IR) VeroElectronics 75-237431B http://www.vero-uk.com

Component Datasheets Manufacturer PartNumber Website
Microcontroller Arizona Microchip PIC 16F877 http://www.microchip.com
LCD Controller OKI MSM6544 http://www.okisemi.com

The manufacturers' web sites, listed above, offer comprehensive data which is free of charge and can be downloaded in
AdobeAcrobatPDF format for viewing and printing. Contact the relevant manufacturer to place orders for accessories.

Arizona Microchip PICSTARTPLUS
RF Solutions EPIC PLUS

http://www.microchip.com
http://www.rfsolutions.co.uk

Van Ooijen Tech. A-Wisp628 http://www.voti.nl/shop/products.htm

A-Cable-MDM

Manufacturer PartNumber Website

http://www.vero-uk.com

75-227911D

http://www.vero-uk.com

75-237432F http://www.vero-uk.com

SAFETY WARNING

To comply with the Low Voltage Directive (LVD93/68/EEC), input voltages to the module’s connectors must not exceed 500VRMS. If voltages to be
measured exceed 500VRMS, then fit scaling resistors externally to the module. If the mains power supply is connected to the module, then all the
module’s connectors must be considered to be floating at mains potential. Consequently due caution must be exercised when connecting to the
module’s connector functions under these conditions. The user must ensure that the incorporation of the DPM into the user ’s equipment conforms
to the relevant sections of BS EN 61010 (Safety Requirements for Electrical EquipmentforMeasuring,Control and Laborator yUse).

DIMENSIONS All dimensions in mm (inches)

58.0 (2.28)

55.0 (2.16)

47.0 (1.85)

17.8 (0.70)

37.5 (1.48)

30.0 (1.18)

25.0 (0.98)

60.0 (2.36)

64.5 (2.54)

47.0 (1.84)

34.5 (1.36)

18.0 (0.70)

Panel cut-out 62.0 x 32.0 (2.44 x 1.26)

MODULE HOUSE, WHITEPARISH, WILTSHIRE SP5 2SJ UK

TEL: [phone] FAX: [phone] E-mail: [e-mail]

TEL: [phone] FAX: [phone] E-mail: [e-mail]

UNITS 6-8, 19/F FUTURA PLAZA, 111-113 HOW MING STREET, KWUN TONG, KOWLOON, HONG KONG

Specifications liable to change without prior warning MDM-1 Issue 8 November/2006 M.C. Applies to MDM-1/3

TEL: [phone] FAX: [phone] E-mail: [e-mail]

35.0 (1.38)

Ø2.50
(0.10)

LASCAR ELECTRONICS LTD.

LASCAR ELECTRONICS INC.

3750 WEST 26th STREET, ERIE, PA 16506 USA

LASCAR ELECTRONICS (HK) LIMITED

(0.05)

2.50

(0.09)

1.5

(0.04)

6.1 (0.24)

5.0 (0.20)

1.0

2.1

(0.08)

2.00
(0.08)

5.2 (0.20)

1.60

(0.06)

6.5

(0.26)

PANELFITTING

Fit the bezel to the front of the panel, then locate
the meter to the bezel from behind the panel.

31.8 (1.25)

Using the screws provided, secure the two plastic
spring clips to the rear of the meter.

1

2
1

Programming & User Connector

34
33

PIC-based Display Module featuring FLASH Memory for Easy (re-)Programming

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.

.

.

.

.

MDM-1 is a programmable LCD display module, intended for applications that require a fast time to market at low cost. The module is
sold unprogrammed, allowing the user to program the desired functionality into the product. MDM-1 can be made to control a
complete application, including its display front-end, a keypad interface, switching outputs and any LED's. The module's core
components comprise an LCD and a PIC microcontroller. The display consists of a 5-digit, 14-segment starburst LCD with green LED
backlighting. Each LCD segment is software-addressable, allowing the user to display numbers, text and non-standard characters.
The PIC processor used (a 4 MHz 16F877) features a reduced instruction set (RISC) architecture, making it easy for the user - novice or
advanced - to develop professional software quickly. The PIC processor contains 8k 14-bit words of Flash program memory,allowing
the module to be programmed in-circuit, and then re-programmed if necessary. This ensures that the latest firmware revision can be
downloaded into the module, or changed on-the-fly. An internal 256 byte EEPROM features a pre-programmed character generator,
making the display of text particularly easy.
using low-cost, off-the-shelf PIC programmers. The same connector provides the application interface. The module has been
designed to fit into a range of standard handheld enclosures. Alternatively, the user can mount the MDM-1 into a front panel, using the
bezel and mounting hardware provided.

MDM-1 features making measurement of analogue signals on multiple channels possible.
Calibration is achieved via the on-board potentiometer or in software.

A development system - MDM-DEV-1 - is also available, comprising an MDM-1, a development board, cables, Windows software
and firmware routines. Additional firmware routines are available on http:/www.lascarelectronics.com, as they become available.

a high accuracy 10-bit A/D converter,

Connection is via a 34-way IDC connector, allowing for easy in-circuit programming,

5 Digit Starburst LCD with LED Backlighting

16F877 Flash PIC Microntroller

8k x 14 Bit Word User-Programmable Flash Memory

10-Bit A/D Converter, up to 8 Channels

8 Bit and 16 Bit Counter/Timers

2 Pulse Width Modulation Channels

Bi-directional Parallel I/O Port with Flow Control

2

Built-in I C Bus (RS232 Option)

Built-in Character Generator in 256 Byte EEPROM

Ordering

Built-In Software Routines

5V Voltmeter
°C/°F Thermometer
Up/Down Counter

PIC Based Display MDM-1

- Display module with A/D converter

- Bezel and fixing hardware

25-Character/8-Message Display

Typical Applications

Panel Meters
Data Displays
Controllers
Data Loggers
Counters
Slave Displays
Thermometers

Consult the Lascar website for the latest software components and

Development Kit MDM-DEV-1

- MDM-1 display module

- Bezel and Fixing Hardware

- MDM-DEV-1 development board

- Windows software on 3 1/2" disk

- Firmware routines and subroutines

- Programming Cable

- Communications cable

FREE

application ideas. Alternatively, ask Lascar to write your software

or program your modules with your code.

www.lascarelectronics.com www.geocities.com/g13685or

Stock Number

Stock Number

MDM-1

System Block Diagram (Example)

LED+

V+

0V

Vpp/RESET

PGD

PGM

PGC

A/D 1
A/D 2
A/D 3

Vref-

Vref+

RD

WR

CS
P I/O 0
P I/O 1
P I/O 2
P I/O 3
P I/O 4
P I/O 5
P I/O 6
P I/O 7

VDD

VSS

MCLR/Vpp

RB7

RB3

RB6

AN0

AN1

AN4

AN2

AN3

RD

WR

CS

RD0

RD1

RD2

RD3

RD4

RD5

RD6

RD7

OSC 1

OSC 2

PIC

Microprocessor

T0CKI

T1CKI

RB 2

RB 4

RB 5

RB0

RB1

RC1

RC2

SDO

SDA

SCK

Oscillator

LCD

Driver

Vref

INT
I/O 1
PWM 1
PWM 2
TIMER 1
TIMER 2

RX

TX

RS232 Rx
RS232 Tx
SDO

2

I C SDA

2

I C SCK

RS 232

Footprint

Technical Specifications

Module

Supply Voltage: 5V d.c. (typ.)
Supply Current: Application dependent
Backlight Current: 50mA (typ.) @ 5V d.c.
Operating Temperature Range: 0 to 50°C

LCD

Segments: 74, duplexed
Digit Height: 12.7mm (0.5")
Viewing Angle: 6 o'clock

* Consult the IC manufacturer's datasheet for a full set of up-to-date technical specifications (see back page).

Specifications liable to change without prior warning MDM-1 Issue 8 October/2006 M.C. Applies to MDM-1/3

Microprocessor*

Type: PIC 16F877
Speed: 4 MHz
Program Memory: 8k x 14-bit FLASH
Data Memory: 368 bytes (RAM)

256 bytes (EEPROM)

I/O Lines: Sink up to 25mA d.c.

Source up to 20mA d.c.
A/D Converter 10-bit
Timers: 8-bit & 16-bit

PGD

PGC

RS232 RX

RS232 TX

PGM

TIMER 1

TIMER 2

LED+

Programming Cable: Wire No 1

P I/O 7

P I/O 6

P I/O 5

P I/O 4

Equivalent PIC 16F877

RB7/PGD

RB6/PGC

RC7/RX/DT

RC6/TX/CK

RB3/PGM

RA4/T0CKI

RC0/T1OSO/T1CKI

No Equivalent

VDD

RE0/RD/AN5

RE1/WR/AN6

RE2/CS/AN7

RD7/PSP7

RD6/PSP6

RD5/PSP5

RD4/PSP4

Vpp/RESET

A/D 1

A/D 2

Vref-

Vref+

I/O 1

A/D 3

INT

SDO

2

I C SCK

2

I C SDA

PWM 2

PWM 1

P I/O 0

P I/O 1

P I/O 2

P I/O 3

Not Used

Not Used

Not Used

Module IDC

Connector

2

1

4

3

6

5

8

7

10

9

12

11

14

13

16

15

18

17

V+

20

19

0V

22

21

RD

24

23

WR

26

25

CS

28

27

30

29

32

31

34

33

Pin Nomenclature

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

VSS

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

DIL Programming

Header

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Vpp/RESET

A/D 1

A/D 2

Vref-

Vref+

A/D3

I/O 1

INT

SDO

2

I C SCK

2

I C SDA

PWM 2

PWM 1

P I/O 0

P I/O 1

P I/O 2

P I/O 3

MCLR/Vpp/THV

RA0/AN0

RA1/AN1

RA2/AN2/VREF-

RA3/AN3/VREF+

RA5/AN4/SS

RB1

RB0/INT

RC5/SDO

RC3/SCK/SCL

RC4/SDI/SDA

RC1/T1OSI/CCP2

RC2/CCP1

RD0/PSP0

RD1/PSP1

RD2/PSP2

RD3/PSP3

40

PGD

39

PGC

38

RS232 RX

37

RS232 TX

36

PGM

35

TIMER 1

34

TIMER 2

33

LED+

32

V+

31

0V

30

RD

29

WR

28

CS

27

P I/O 7

26

P I/O 6

25

P I/O 5

24

P I/O 4

23

Not Used

22

Not Used

21

Not Used

Pin Functions

Power Supply

(overview)

IDC DIL Name .
Positive supply input 17 32 V+
Negative supply input

19 31 0V

LED backlighting supply 15 33 LED+

Programming

IDC DIL Name .
Programming voltage input 2 1 Vpp/RESET
Low voltage programming input 9 36 PGM
S

erial programming data 1 40 PGD

Serial programming clock 3 39 PGC
Positive supply voltage 17 32 V+
Negative supply voltage 19 31 0V

Analogue Measurement

IDC DIL Name .
Measurement input 1 4 2 A/D 1
Measurement input 2 6 3 A/D 2
Measurement input 3 12 7 A/D 3
Negative voltage reference input 8 4 Vref­Positive voltage reference input 10 5 Vref+

Counter/Timers

IDC DIL Name .
8-bit Counter/Timer 11 35 TIMER 1
16-bit Counter/Timer 13 34 TIMER 2

Pulse Width Modulators

IDC DIL Name .
PWM Channel 1 26 13 PWM 1
PWM Channel 2 24 12 PWM 2

Parallel Port

IDC DIL Name .
I/O line 0 28 14 P I/O 0
I/O line 1 30 15 P I/O 1
I/O line 2 32 16 P I/O 2
I/O line 3 34 17 P I/O 3
I/O line 4 33 24 P I/O 4
I/O line 5 31 25 P I/O 5
I/O line 6 29 26 P I/O 6
I/O line 7 27 27 P I/O 7
Chip Select 25 28 CS
Write 23 29 WR
Read 21 30 RD

Serial Coms Ports

SDO 18 9 SDO
I C Clock 20 10 I C SCK

Programming Cable: Wire No 1

I C Data 22 11 I C SDA

IDC DIL Name .

RS232 Transmit 7 37 RS232 TX
RS232 Receive 5 38 RS232 RX

Interrupt & I/O

IDC DIL Name .
External interrupt 16 8 INT
General I/O port 14 6 I/O 1