Datasheet

PIC18F46J50 Full-Speed USB Demonstration Board User’s Guide

2.6 OPERATION WITH THE PIC18 EXPLORER OR

PICDEM™ HPC EXPLORER BOARDS

The basic hardware capabilities of the PIC18F46J50 Full-Speed USB Demonstration

Board can be supplemented by plugging it into the PIC18 Explorer Board or PICDEM

HPC Explorer Board. These boards have additional hardware features, such as:

• A UART level translator

• An RS-232 connector

• Eight general purpose indicator LEDs

• A potentiometer – Facilitates some of the USB demonstrations that read the

voltage output by the potentiator

• A full-size RJ-11-style programming/debugging jack

• A PICtail™ daughter board connector – Enables easy probing of I/O pins or

connection to other expansion boards (such as the SD/MMC PICtail™ daughter

board, www.microchipDIRECT.com

)

Before connecting the PIC18F46J50 Full-Speed USB Demonstration Board to the

PICDEM HPC Explorer Board or the PIC18 Explorer Board, ensure that the board’s

PIC/ICE slider switch is in the “ICE” position. If the explorer board’s switch is in the

wrong position, pin P5 on the PIC18F46J50 Full-Speed USB Demonstration Board is

designed to physically interfere with the switch.

When the explorer board’s slider switch is in the ICE position, the MCLR

pin of the

board’s PIC18F8722 microcontroller is held in Reset. This prevents I/O pin contention,

even though the PIC18F8722 and PIC18F46J50 microcontrollers electrically share I/O

pins when the two boards are connected.