Microchip Technology DV164136 User Manual
PICDEM™ PIC18 Explorer Demonstration Board User’s Guide
DS51721B-page 6
© 2008 Microchip Technology Inc.
1.3
PICDEM™ PIC18 EXPLORER DEMONSTRATION BOARD
The PICDEM PIC18 Explorer Demonstration Board has the following hardware
features with each feature’s number corresponding to the number in Figure 1-1 that
shows the feature’s location on the board:
features with each feature’s number corresponding to the number in Figure 1-1 that
shows the feature’s location on the board:
1.
PIC18F8722 microcontroller – The sample, primary microcontroller mounted on
the board.
the board.
2.
Male header pins for connecting Plug-In Modules (PIMs). A PIM enables an
alternate PIC18 device to be connected to the board, as the primary
microcontroller.
alternate PIC18 device to be connected to the board, as the primary
microcontroller.
3.
In-Circuit Debugger (ICD) connector.
4.
Six-pin, PICkit™ 2 connector.
5.
10 k
Ω potentiometer for analog inputs.
6.
Push button switch – For external Reset.
7.
USB connector – For RS-232 communication.
8.
PIC18LF2450 microcontroller – For converting RS-232 communication to USB
protocol for attachment of a host PC.
protocol for attachment of a host PC.
9.
12 MHz crystal – For the PIC18LF2450 microcontroller.
10. RS-232 DB9 socket and associated hardware – For direct connection to an
RS-232 interface.
11. Jumper J13 for routing RS-232 communication through either the USB port or
the RS-232 socket.
12. Jumper J4 – For selecting between programming the main PIC
®
device or the
PIC18LF2450, used for USB to RS-232 communication.
13. Switch S4 – For designating the main microcontroller as either the
board-mounted PIC18F8722 or a PIM-mounted microcontroller.
14. LED – For power-on indication.
15. JP1 – For disconnecting the eight display LEDs.
16. Eight LEDs.
17. 32.768 kHz crystal – For Timer1 clock operation.
18. Two push button switches – For external stimulus.
19. Analog temperature sensor, MPC9701A.
20. 25LC256 SPI EEPROM.
21. JP2 – To enable/disable EEPROM.
22. JP3 – To enable/disable LCD.
23. 10 MHz crystal – For the main microcontroller.
24. PICtail™ daughter board connector socket.
25. SPI I/O expander – For LCD display, MCP23S17.
26. Prototype area – For user hardware.
27. LCD display.
28. J2 three-pin, male header – For selecting between a voltage of 3.3V or 5V.
29. J14 four-pin, male header – For use with a PIM, if required, to connect 3.3V or
5V, V
IN
and ICE MCLR.