PIC16C72-02E/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16C72-02E/SP

8-Bit CMOS microcontroller with A,D converter

Microchip Technology 

PIC16C72 Series

TABLE 3-3 PORTB FUNCTIONS

Name

Bit#

Buffer

Function

RB0/INT

bit0

TTL/ST(1) Input/output pin or external interrupt input. Internal software

programmable weak pull-up.

RB1

bit1

TTL

Input/output pin. Internal software programmable weak pull-up.

RB2

bit2

TTL

Input/output pin. Internal software programmable weak pull-up.

RB3

bit3

TTL

Input/output pin. Internal software programmable weak pull-up.

RB4

bit4

TTL

Input/output pin (with interrupt on change). Internal software programmable

weak pull-up.

RB5

bit5

TTL

Input/output pin (with interrupt on change). Internal software programmable

weak pull-up.

RB6

bit6

TTL/ST(2) Input/output pin (with interrupt on change). Internal software programmable

weak pull-up. Serial programming clock.

RB7

bit7

TTL/ST(2) Input/output pin (with interrupt on change). Internal software programmable

weak pull-up. Serial programming data.

Legend: TTL = TTL input, ST = Schmitt Trigger input

Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.

2: This buffer is a Schmitt Trigger input when used in serial programming mode.

TABLE 3-4 SUMMARY OF REGISTERS ASSOCIATED WITH PORTB

Address Name

Bit 7

Bit 6

Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

06h, 106h PORTB

RB7

RB6

RB5 RB4 RB3 RB2 RB1 RB0

86h, 186h TRISB PORTB Data Direction Register

81h, 181h OPTION RBPU INTEDG T0CS T0SE PSA PS2 PS1 PS0

Legend: x = unknown, u = unchanged. Shaded cells are not used by PORTB.

Value on:

POR,

BOR

xxxx xxxx

1111 1111

1111 1111

Value on all

other resets

uuuu uuuu

1111 1111

1111 1111

DS39016A-page 22

Preliminary

© 1998 Microchip Technology Inc.

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