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PICDEM? 2 PLUS USER ’S GUIDE
Appendix A. Hardware Detail
The PICDEM 2 Plus hardware is extremely simple and illustrates the ease of use of
various PIC MCUs. This section describes the PICDEM 2 Plus hardware elements.
A.1
A.2
A.3
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
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 indicate whether there is power to the PICDEM 2
Plus demonstration board.
LED On = Powered. LED Off = Not Powered.
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.
Note:
The PICDEM 2 Plus kit does not include a power supply.
MPLAB ICE 2000 users have a regulated +5V 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 the necessary hardware to sup-
port 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.
? 2007 Microchip Technology Inc.
DS51275D-page 17
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