PIC16LF877A-I Datasheet, PDF (13/234 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers

PIC16F87XA
TABLE 1-3: PIC16F874A/877A PINOUT DESCRIPTION (CONTINUED)
Pin Name
PDIP PLCC TQFP QFN I/O/P
Pin# Pin# Pin# Pin# Type
Buffer
Type
Description
RB0/INT
RB0
INT
PORTB is a bidirectional I/O port. PORTB can be
software programmed for internal weak pull-up on all
inputs.
33 36
8
9
TTL/ST⁽¹⁾
I/O
Digital I/O.
I
External interrupt.
RB1
34 37
9
10
I/O
TTL
Digital I/O.
RB2
35 38 10
11
I/O
TTL
Digital I/O.
RB3/PGM
RB3
PGM
36 39 11
12
TTL
I/O
I
Digital I/O.
Low-voltage ICSP programming enable pin.
RB4
37 41 14
14
I/O
TTL
Digital I/O.
RB5
RB6/PGC
RB6
PGC
RB7/PGD
RB7
PGD
38
42
15
15
39
43
16
16
40
44
17
17
I/O
TTL
TTL/ST⁽²⁾
I/O
I
TTL/ST⁽²⁾
I/O
I/O
Digital I/O.
Digital I/O.
In-circuit debugger and ICSP programming clock.
Digital I/O.
In-circuit debugger and ICSP programming data.
Legend:
Note 1:
2:
3:
I = input
O = output
I/O = input/output
P = power
— = Not used TTL = TTL input ST = Schmitt Trigger input
This buffer is a Schmitt Trigger input when configured as the external interrupt.
This buffer is a Schmitt Trigger input when used in Serial Programming mode.
This buffer is a Schmitt Trigger input when configured in RC Oscillator mode and a CMOS input otherwise.
 2003 Microchip Technology Inc.
DS39582B-page 11