PIC16F631 Datasheet, PDF (5/294 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F631/677/685/687/689/690
PIC16F677 Pin Diagram
20-pin PDIP, SOIC, SSOP
VDD
RA5/T1CKI/OSC1/CLKIN
RA4/AN3/T1G/OSC2/CLKOUT
RA3/MCLR/VPP
RC5
RC4/C2OUT
RC3/AN7C12IN3-
RC6/AN8/SS
RC7/AN9/SDO
RB7
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VSS
RA0/AN0/C1IN+/ICSPDAT/ULPWU
RA1/AN1/C12IN0-/VREF/ICSPCLK
RA2/AN2/T0CKI/INT/C1OUT
RC0/AN4/C2IN+
RC1/AN5/C12IN1-
RC2/AN6/C12IN2-
RB4/AN10/SDI/SDA
RB5/AN11
RB6/SCK/SCL
TABLE 2:
PIC16F677 PIN SUMMARY
I/O Pin
Analog
Comparators Timers
SSP
RA0 19 AN0/ULPWU
C1IN+
—
—
RA1 18
AN1/VREF
C12IN0-
—
—
RA2 17
AN2
C1OUT
T0CKI
—
RA3 4
—
—
—
—
RA4 3
RA5 2
RB4 13
RB5 12
RB6 11
RB7 10
RC0 16
RC1 15
RC2 14
RC3 7
RC4 6
RC5 5
RC6 8
RC7 9
—
1
— 20
AN3
—
AN10
AN11
—
—
AN4
AN5
AN6
AN7
—
—
AN8
AN9
—
—
—
—
—
—
—
—
C2IN+
C12IN1-
C12IN2-
C12IN3-
C2OUT
—
—
—
—
—
T1G
T1CKI
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
SDI/SDA
—
SCL/SCK
—
—
—
—
—
—
—
SS
SDO
—
—
Note 1: Pull-up activated only with external MCLR configuration.
Interrupt
IOC
IOC
IOC/INT
IOC
IOC
IOC
IOC
IOC
IOC
IOC
—
—
—
—
—
—
—
—
—
—
Pull-up
Y
Y
Y
Y⁽¹⁾
Y
Y
Y
Y
Y
Y
—
—
—
—
—
—
—
—
—
—
Basic
ICSPDAT
ICSPCLK
—
MCLR/VPP
OSC2/CLKOUT
OSC1/CLKIN
—
—
—
—
—
—
—
—
—
—
—
—
VDD
VSS
© 2007 Microchip Technology Inc.
DS41262D-page 3