User manual

MPLAB

PM3

USER’S GUIDE

Appendix A. Hardware Specifications

A.1 INTRODUCTION

This appendix describes MPLAB PM3 to PC connections, programmer hardware and

socket module hardware. Contents of this appendix include:

• Connecting to a PC via the Serial Port

• Programmer Specifications

• ICSP Hardware Specifications

• Socket Module Specifications

A.2 CONNECTING TO A PC VIA THE SERIAL PORT

MPLAB PM3 interfaces to the PC via a standard RS-232 port with a DB9 connector.

The unit defaults to a 57.6K baud rate.

Serial port communications are as follows:

• 57.6K (default) or 9.6K baud (PROCMD only)

• 8 data bits, 1 stop bit, no parity

• Hardware flow control

Table A-1 gives the data for connecting the MPLAB PM3 programmer (9-pin

straight-through) to a 25-pin serial port. Connect the corresponding terminals indicated

on each line of the table.

TABLE A-1: PC HOST TO MPLAB

PM3 SIGNALS

25-pin (PC-Host) 9-pin (MPLAB PM3)

2TX 2RX

3RX 3TX

20 DTR 4 DTR

7 Common 5 Common

6 DSR 6 +5 volts (pulled up)

4RTS 7CTS

5CTS 8RTS