PIC16LF876A-I Datasheet, PDF (9/234 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers

PIC16F87XA
TABLE 1-2: PIC16F873A/876A PINOUT DESCRIPTION (CONTINUED)
Pin Name
PDIP, SOIC, QFN I/O/P
SSOP 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-ups on all inputs.
21
18
TTL/ST⁽¹⁾
I/O
Digital I/O.
I
External interrupt.
RB1
22
19
I/O
TTL
Digital I/O.
RB2
23
20
I/O
TTL
Digital I/O.
RB3/PGM
RB3
PGM
24
21
TTL
I/O
I
Digital I/O.
Low-voltage (single-supply) ICSP programming enable pin.
RB4
25
22
I/O
TTL
Digital I/O.
RB5
RB6/PGC
RB6
PGC
RB7/PGD
RB7
PGD
26
23
I/O
TTL
Digital I/O.
27
24
TTL/ST⁽²⁾
I/O
Digital I/O.
I
In-circuit debugger and ICSP programming clock.
28
25
TTL/ST⁽²⁾
I/O
Digital I/O.
I/O
In-circuit debugger and ICSP programming data.
PORTC is a bidirectional I/O port.
RC0/T1OSO/T1CKI
11
RC0
T1OSO
T1CKI
8
ST
I/O
O
I
Digital I/O.
Timer1 oscillator output.
Timer1 external clock input.
RC1/T1OSI/CCP2
RC1
T1OSI
CCP2
12
9
ST
I/O
I
I/O
Digital I/O.
Timer1 oscillator input.
Capture2 input, Compare2 output, PWM2 output.
RC2/CCP1
RC2
CCP1
13
10
ST
I/O
I/O
Digital I/O.
Capture1 input, Compare1 output, PWM1 output.
RC3/SCK/SCL
RC3
SCK
SCL
14
11
ST
I/O
I/O
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
15
12
ST
I/O
I
I/O
Digital I/O.
SPI data in.
I²C data I/O.
RC5/SDO
RC5
SDO
16
13
ST
I/O
O
Digital I/O.
SPI data out.
RC6/TX/CK
RC6
TX
CK
17
14
ST
I/O
O
I/O
Digital I/O.
USART asynchronous transmit.
USART1 synchronous clock.
RC7/RX/DT
RC7
RX
DT
18
15
ST
I/O
I
I/O
Digital I/O.
USART asynchronous receive.
USART synchronous data.
VSS
8, 19
5, 6
P
—
Ground reference for logic and I/O pins.
VDD
20
17
P
—
Positive supply for logic and I/O pins.
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.
 2001-2013 Microchip Technology Inc.
DS39582C-page 9