OLIMEX PIC-PG4D PIC16F84A, PIC16F628 PIC microcontroller development board User manual

Below you will find brief information for PIC microcontroller development board PIC-PG4D PIC16F84A, PIC microcontroller development board PIC-PG4D PIC16F628. The PIC-PG4D is a microcontroller development board that allows you to program and run PIC microcontrollers using a RS232 port and ICPROG software. It includes a built-in programmer, a 20MHz oscillator, an LM78L05 voltage regulator, and a sea of pads for prototyping. The board comes with both the PIC16F84A and PIC16F628 microcontrollers and allows for in-circuit programming of PICs on other boards.

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PIC-PG4D EASY START

PIC16F84/PIC16F628 MICROCONTROLLER DEVELOPMENT BOARD

Features:

PIC-PG4D is everything you need to start developing with PIC microcontrollers and have following features:

- PIC16F84A-20MHz or PIC16F628-20Mhz microcontroller on DIL18 socket

- extension slot on every PIC port

- build-in programmer, just connect to RS232 port and program the PIC in PIC-PG4D without any external power supply

- ICSP programming interface connector + cable for in-circuit programming PICs on other boards like PIC-Pxx prototype boards

- I2C EEPROM memory

- LED with jumper

- RESET circuit

- RS232 interface and connector

- 20MHz oscillator circuit

- power supply with LM78L05 voltage regulator

- sea of pads on gird 0.1” with GND bus

- four mounting holes

- dimensions: 61x76 mm

Power supply:

Must be in range +7.5-12VDC.

Programming:

PIC-PG4D works with ICPROG software, written by Bonny Gijzen. T he latest release of ICPROG may be download for free from http://www.icprog.com

ICPROG installation:

Setup the Hardware settings as "JDM programmer" with direct IO access if you are using Windows 95/98 and Windows API if you are working with Windows

NT. Select Device PIC16F84A or PIC16F628.

IMPORTANT! When programming the PIC via the

PGM serial port: move switch in PGM position.

POWER supply must be disconnected! When you want to run the program in PIC, disconnect the PGM

RS232 port, move switch in RUN position and apply power supply. Don't put and pull the PIC microcontroller from the socket when PGM serial cable is connected!

RS232 PGM (programming) port:

Your RS232 cable must provide the following signals for properly operation of PIC-PG4D: Tx,

Rx, CTS, DTR, RTS and GND.

RS232 (normal) interface:

This is used for communication between PIC on board and other computers with RS232 interface.

Connections are: Tx – RB2, Rx – RB1. With

PIC16F628 you can use internal UART.

EEPROM interface:

The EEPROM SCL/SDA lines have pads on the bottom side for direct connection to RA0 and RA1

PIC ports.

LED:

Red LED 5mm is connected to RA2 via jumper

J_LED.

Development boards for PIC, AVR and MSP430 microcontrollers http://www.olimex.com/dev

ICSP connector layout:

The ICD/ICSP connector is 6 pin with 0,1" step.

It may be used to program other boards with

PICs via PIC-PG4D. The PIN.1 is marked with square pad on bottom and arrow on top. ICSP signals are: 1- MCLR, 2- VDD, 3- VSS/GND, 4-

PGD/RB7, 5- PGC/RB6, 6- PGM/RB3.

ICSP programming:

Please note that in your target circuit MCLR should be not directly connected to VCC, as programmer try to rise MCLR to 13VDC to enter in programming mode. If MCRL on target board is connected to VCC and you attempt to do ICSP programming you may destroy PIC-PG4D programmer.

Ordering codes:

PIC-PG4D-84 - assembled and tested with

PIC16F84A microcontroller

PIC-PG4D-628 - assembled and tested with

PIC16F628 microcontroller

Development boards for PIC, AVR and MSP430 microcontrollers http://www.olimex.com/dev

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Key Features

On-board programmer
RS232 port for programming
ICSP programming interface
20MHz oscillator circuit
LM78L05 voltage regulator
I2C EEPROM memory
Sea of pads on 0.1" grid with GND bus
Four mounting holes
Dimensions: 61x76 mm

Frequently Answers and Questions

How do I program the PIC on the board?

Connect the PIC-PG4D board to your computer's RS232 port and use ICPROG software to program the microcontroller. Ensure the switch is in the PGM position and the power supply is disconnected when programming.

What is the power supply requirement for the board?

The power supply must be in the range of +7.5-12VDC.

What are the RS232 connections for programming?

Your RS232 cable must provide the following signals: Tx, Rx, CTS, DTR, RTS, and GND. The RS232 interface is used for communication between the PIC on the board and other computers with an RS232 interface.