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PICDEM 4 User’s Guide
1.2
PICDEM 4 DEMONSTRATION BOARD
The PICDEM 4 demonstration board has the following hardware features:
1. 8-, 14- and 18-pin DIP sockets. (Although 3 sockets are provided, only one
device may be used at a time.)
2. On-board +5V regulator for direct input from 9V, 100 mA AC/DC wall adapter or
9V battery, or hooks for a +5V, 100 mA regulated DC supply.
3. RS-232 connection and associated hardware for direct connection to RS-232
interface.
4. In-Circuit Debugger (ICD) connector.
5. Four 5 k ? pots for devices with analog inputs and comparators.
6. Three push button switches for external stimulus and RESET.
7. Green power-on indicator LED.
8. Eight red LEDs connected to PORTA and PORTB.
9. Jumpers J21 and J22 to disconnect LEDs from PORTA and PORTB.
10. Unpopulated holes provided for crystal connection.
11. 32.768 kHz crystal for Timer1 Real-Time Clock operation.
12. Jumper J14 to disconnect on-board RC oscillator (R20 and C15, approx. 2 MHz).
13. Unpopulated holes for EEPROM.
14. 2 x 16 LCD display.
15. Prototype area for user hardware.
16. PIC16LF72 I/O expander.
17. Supercapacitor circuitry.
18. Unpopulated holes for a LIN transceiver.
19. Unpopulated holes for a motor driver.
FIGURE 1-1:
PICDEM 4 HARDWARE
7
17
16
5
14
2
18
3
8
9
4
10
12
19
11
1
15
DS51337A-page 2
6
13
? 2003 Microchip Technology Inc.
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