PIC16F7X Datasheet, PDF (13/174 Pages) Microchip Technology – 28/40-Pin 8-Bit CMOS FLASH Microcontrollers

PIC16F7X
TABLE 1-3: PIC16F74 AND PIC16F77 PINOUT DESCRIPTION (CONTINUED)
Pin Name
DIP PLCC QFP I/O/P
Pin# Pin# Pin# Type
Buffer
Type
Description
RB0/INT
RB0
INT
PORTB is a bi-directional I/O port. PORTB can be software
programmed for internal weak pull-up on all inputs.
33
36
8
TTL/ST⁽¹⁾
I/O
Digital I/O.
I
External interrupt.
RB1
34
37
9
I/O
TTL
Digital I/O.
RB2
35
38
10
I/O
TTL
Digital I/O.
RB3/PGM
RB3
PGM
36
39
11
TTL
I/O
I/O
Digital I/O.
Low voltage ICSP programming enable pin.
RB4
37
41
14
I/O
TTL
Digital I/O.
RB5
RB6/PGC
RB6
PGC
RB7/PGD
RB7
PGD
38
42
15
I/O
TTL
39
43
16
TTL/ST⁽²⁾
I/O
I/O
40
44
17
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.
PORTC is a bi-directional I/O port.
RC0/T1OSO/T1CKI 15
16
32
ST
RC0
I/O
T1OSO
O
T1CKI
I
Digital I/O.
Timer1 oscillator output.
Timer1 external clock input.
RC1/T1OSI/CCP2 16
18
35
ST
RC1
I/O
T1OSI
I
CCP2
I/O
Digital I/O.
Timer1 oscillator input.
Capture2 input, Compare2 output, PWM2 output.
RC2/CCP1
RC2
CCP1
17
19
36
ST
I/O
I/O
Digital I/O.
Capture1 input/Compare1 output/PWM1 output
RC3/SCK/SCL
18
20
37
ST
RC3
I/O
SCK
I/O
SCL
I/O
Digital I/O
Synchronous serial clock input/output for SPI mode.
Synchronous serial clock input/output for I²C mode.
RC4/SDI/SDA
RC4
SDI
SDA
23
25
42
ST
I/O
I
I/O
Digital I/O.
SPI data in.
I²C data I/O.
RC5/SDO
RC5
SDO
24
26
43
ST
I/O
O
Digital I/O.
SPI data out.
RC6/TX/CK
RC6
TX
CK
25
27
44
ST
I/O
O
I/O
Digital I/O.
USART asynchronous transmit.
USART 1 synchronous clock.
RC7/RX/DT
RC7
RX
DT
26
29
1
ST
I/O
I
I/O
Digital I/O.
USART asynchronous receive.
USART synchronous data.
Legend:
Note 1:
2:
3:
4:
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 an external interrupt.
This buffer is a Schmitt Trigger input when used in Serial Programming mode.
This buffer is a Schmitt Trigger input when configured as general purpose I/O and a TTL input when used in the Parallel
Slave Port mode (for interfacing to a microprocessor bus).
This buffer is a Schmitt Trigger input when configured in RC Oscillator mode and a CMOS input otherwise.
 2002 Microchip Technology Inc.
DS30325B-page 11