Datasheet

PIC16F87XA
DS39582C-page 12  2001-2013 Microchip Technology Inc.
PORTC is a bidirectional I/O port.
RC0/T1OSO/T1CKI
RC0
T1OSO
T1CKI
15 16 32 34
I/O
O
I
ST
Digital I/O.
Timer1 oscillator output.
Timer1 external clock input.
RC1/T1OSI/CCP2
RC1
T1OSI
CCP2
16 18 35 35
I/O
I
I/O
ST
Digital I/O.
Timer1 oscillator input.
Capture2 input, Compare2 output, PWM2 output.
RC2/CCP1
RC2
CCP1
17 19 36 36
I/O
I/O
ST
Digital I/O.
Capture1 input, Compare1 output, PWM1 output.
RC3/SCK/SCL
RC3
SCK
SCL
18 20 37 37
I/O
I/O
I/O
ST
Digital I/O.
Synchronous serial clock input/output for SPI
mode.
Synchronous serial clock input/output for I
2
C
mode.
RC4/SDI/SDA
RC4
SDI
SDA
23 25 42 42
I/O
I
I/O
ST
Digital I/O.
SPI data in.
I
2
C data I/O.
RC5/SDO
RC5
SDO
24 26 43 43
I/O
O
ST
Digital I/O.
SPI data out.
RC6/TX/CK
RC6
TX
CK
25 27 44 44
I/O
O
I/O
ST
Digital I/O.
USART asynchronous transmit.
USART1 synchronous clock.
RC7/RX/DT
RC7
RX
DT
26 29 1 1
I/O
I
I/O
ST
Digital I/O.
USART asynchronous receive.
USART synchronous data.
TABLE 1-3: PIC16F874A/877A PINOUT DESCRIPTION (CONTINUED)
Pin Name
PDIP
Pin#
PLCC
Pin#
TQFP
Pin#
QFN
Pin#
I/O/P
Type
Buffer
Type
Description
Legend: I = input O = output I/O = input/output P = power
— = Not used 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.
3: This buffer is a Schmitt Trigger input when configured in RC Oscillator mode and a CMOS input otherwise.