PICDEM2 datasheet(52/60 Pages) MICROCHIP

52 / 60 page

 2001 Microchip Technology Inc.

DS30374D-page 47

Hardware Detail

A.8

Serial EEPROM

A 24LC01 1K (128x8) serial EEPROM is included on the board to illustrate

I2C bus concepts. Provisions for an ACCESS.bus™ connector (J5) and

associated resistors (R8-R13) are wired in parallel with the serial EEPROM.

For more information on the serial EEPROM, please refer to the most recent

version of the Technical Library CD-ROM.

A.9

Keypad Header

J4 is a nine pin header which may be used as a keypad interface. Any 3x4 or

4x4 keypad may be used. For an example keypad, see LCD Demo

(Chapter 6).

A.10 LCD Header

J3 is a 14 pin header which may be used as an LCD module interface. Many

different LCD modules may be used. For more information on LCD modules,

refer to the manufacturers’ data sheets. For an example LCD, see LCD Demo

(Chapter 6).

A.11

Sample Devices

A sample part programmed with a simple program is included in the

PICDEM 2 kits.

Table 10-1 lists the I/O features and port connections for each processor type.

TABLE A-1:

PORT CONNECTIONS

Processor

LEDs

RS-232

TX/RX

Pot R16

Keypad

Connector

LCD Control/

Data

EEPROM/

ACCESS.BUS

28-pin

PORTB

RC6/RC7(1)

MCLR

RA4

RC2

RA0(2)

PORTB

—

RC3/RC4

40-pin

PORTB

RC6/RC7

MCLR

RA4

RC2

RA0

PORTB

PORTA/D

RC3/RC4

Note

1: PIC16C64 does not have a USART module.

2: PIC16C64 does not have an A/D module.

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