16F876 Microchip Technology, 16F876 Datasheet - Page 32

• Manufacturer Part Number: 16F876
• Description: 28/40-pin 8-Bit CMOS FLASH Microcontrollers
• Manufacturer: Microchip Technology

PIC16F87X
TABLE 3-3:
TABLE 3-4:
DS30292B-page 32
RB0/INT
RB1
RB2
RB3/PGM
RB4
RB5
RB6/PGC
RB7/PGD
Legend: TTL = TTL input, ST = Schmitt Trigger input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
06h, 106h
86h, 186h
81h, 181h
Legend: x = unknown, u = unchanged. Shaded cells are not used by PORTB.
Address
Name
2: This buffer is a Schmitt Trigger input when used in serial programming mode.
PORTB
TRISB
OPTION_REG
Bit#
bit1
bit2
bit4
bit5
bit0
bit3
bit6
bit7
Name
PORTB FUNCTIONS
SUMMARY OF REGISTERS ASSOCIATED WITH PORTB
TTL/ST
TTL/ST
TTL/ST
Buffer
PORTB Data Direction Register
TTL
TTL
TTL
TTL
TTL
RBPU
Bit 7
RB7
(1)
(2)
(2)
INTEDG
Bit 6
RB6
Input/output pin or external interrupt input. Internal software
programmable weak pull-up.
Input/output pin. Internal software programmable weak pull-up.
Input/output pin. Internal software programmable weak pull-up.
Input/output pin or programming pin in LVP mode. Internal software
programmable weak pull-up.
Input/output pin (with interrupt on change). Internal software programmable
weak pull-up.
Input/output pin (with interrupt on change). Internal software programmable
weak pull-up.
Input/output pin (with interrupt on change) or In-Circuit Debugger pin.
Internal software programmable weak pull-up. Serial programming clock.
Input/output pin (with interrupt on change) or In-Circuit Debugger pin.
Internal software programmable weak pull-up. Serial programming data.
T0CS
Bit 5
RB5
T0SE
Bit 4
RB4
Bit 3
PSA
RB3
Bit 2
RB2
PS2
Function
Bit 1
RB1
PS1
Bit 0
RB0
PS0
1999 Microchip Technology Inc.
xxxx xxxx uuuu uuuu
1111 1111 1111 1111
1111 1111 1111 1111
Value on:
POR,
BOR
Value on all
resets
other