PIC16LC63A-04 Datasheet, PDF (32/184 Pages) Microchip Technology – 8-Bit CMOS Microcontrollers with A/D Converter

PIC16C63A/65B/73B/74B
TABLE 5-3: PORTB FUNCTIONS
Name
RB0/INT
Bit#
Buffer
Function
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 5-4: 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
PORTB
RB7
RB6
RB5 RB4 RB3 RB2 RB1 RB0
86h
TRISB
PORTB Data Direction register
81h
OPTION_REG 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
DS30605C-page 32
 2000 Microchip Technology Inc.