PIC-P28 development board Users Manual All boards produced by Olimex are ROHS compliant Rev.
INTRODUCTION: PIC-P28 board is development board which allow you to prototype and develop code for all Microchip’s PIC microcontrollers with 28 pins. What you can do with PIC-P28? A lot of stuff let’s see what we have: PIC-P28 have RS232 connector and driver, so you can interface your PIC microcontroller to other embedded or PC with RS232. The RS232 driver have 4 lines Tx, Rx, CTS and jumper selectable RTS or DTR. The pin labeled RX is output and should be connected to PIC UART Tx.
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FEATURES: • • • • • • • • • • • • • • • • ICSP/ICD connector for programming and debugging RS232 interface with MAX232 IC on socket DIL28 microcontroller socket Quartz crystal 20Mhz LED to RA0 through jumper user Button to RA5 Reset button and circuit Power plug-in jack, accept AC and DC input selectable +3.3V / +5V power supply voltage regulator (3.3V when jumper is closed) Extension slot on every uC pin Gird 100 mils GND bus Vcc bus Four mounting holes 3,3 mm (0,13") FR-4, 1.
Page 5 6 7 8 9 1 2 3 4 5 12-RTS 23-DTR 2 1 J1 3 4.7uF/25VDC C2 14 7 13 8 6 2 C2- C2+ C1- 4.7uF/25VDC C5 16VCCU2P GND15 +5V MAX232 T1IN T1OUT T2IN T2OUT R1OUT R1IN R2OUT R2IN V- V+ C1+ R5 U2 330/1% R3 C1 OUT ADJ 390/1% 4.7uF/25VDC IN VR LM317 11 10 12 9 5 4 3 1 C8 100n +5V RTS/DTR TX RX CTS C3 4.7uF/25VDC C4 4.7uF/25VDC 3.3V 240/1% +5V C6 470uF/16VDC B-DIL G1 22p C10 22p C9 LED LED_J RST Q1 4-20MHz 330 R1 NA C12 http://www.olimex.
SOFTWARE: DEMO1: PIC16F876-I/P BLINK LED This is demo code which blinks the LED on PIC-P28 board. Note: LED jumper should be closed! DEMO2: PIC16F876-I/P BUTTON read This is demo code which show how to read BUTTON status and to switch the LED ON when button is pressed and LED off when the button is depressed. DEMO3: PIC16F876-I/P RS232 send / receive routines This is demo code, which show how to use the USART to send and receive characters from host PC via RS232 cable.
ORDER CODE: PIC-P28 – assembled and tested (no kit, no soldering required) PIC-P28/PCB – blank PCBs only How to order? You can order to us directly or by any of our distributors. Check our web www.olimex.com/dev for more info. Revision history: REV.
Disclaimer: © 2008 Olimex Ltd. All rights reserved. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd. Other terms and product names may be trademarks of others. The information in this document is provided in connection with Olimex products. No license, express or implied or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Olimex products.
