PICDEM™ 2 PLUS USER’S GUIDE
2004 Microchip Technology Inc.
DS51275B-page 11
Appendix A. Hardware Detail
The PICDEM 2 Plus hardware is extremely simple and is intended to illustrate the ease
of use of various PICmicro MCUs. The PICDEM 2 Plus features the following hardware
elements:
A.1
PROCESSOR SOCKETS
Although three sockets are provided, only one device may be used at a time.
• 18-pin socket
• 28-pin socket
• 40-pin socket
A.2
DISPLAY
Four red LEDs are connected to PORTB of each processor type. The PORTB pins are
set high to light the LEDs. These LEDs may be disconnected from PORTB by removing
jumper J6.
One green LED is provided to determine whether there is power to the PICDEM 2 Plus
board (LED on) or not (LED off).
A.3
POWER SUPPLY
There are three ways to supply power to the PICDEM 2 Plus:
• A 9V battery can be plugged into J8.
• A 9V, 100 mA unregulated AC or DC supply can be plugged into J2. A power
supply can be purchased through Microchip, Part #AC162039.
• A +5V, 100 mA regulated DC supply can be connected to the hooks provided.
MPLAB ICE 2000 users have a reg5V power supply available in the logic probe
connector and can easily connect to the hooks on PICDEM 2 Plus (Red probe to +5V
and Black probe to GND).
MPLAB ICD 2 users may use the ICD to power the target board to 5V, up to 200 mA, if
the MPLAB ICD 2 is connected to the PC with a serial cable.
A.4
RS-232 SERIAL PORT
An RS-232 level shifting IC has been provided with all necessary hardware to support
connection of an RS-232 host through the DB9 connector. The port is configured as
DCE and can be connected to a PC using a straight-through cable.
The PIC16/PIC18 RX and TX pins are tied to the RX and TX lines of the MAX232A.
Note:
The PICDEM 2 Plus kit does not include a power supply.
