PIC16F630/676
TABLE 1-1:
PIC16F630/676 PINOUT DESCRIPTION
Input
Type
Output
Type
Name
Function
Description
RA0/AN0/CIN+/ICSPDAT
RA0
TTL
CMOS Bi-directional I/O w/ programmable pull-up and
Interrupt-on-change
AN0
CIN+
AN
AN
—
A/D Channel 0 input
Comparator input
ICSPDAT
RA1
TTL
TTL
CMOS Serial Programming Data I/O
RA1/AN1/CIN-/VREF/
ICSPCLK
CMOS Bi-directional I/O w/ programmable pull-up and
Interrupt-on-change
AN1
CIN-
AN
AN
AN
ST
ST
—
—
—
—
A/D Channel 1 input
Comparator input
VREF
External Voltage reference
Serial Programming Clock
ICSPCLK
RA2
RA2/AN2/COUT/T0CKI/INT
CMOS Bi-directional I/O w/ programmable pull-up and
Interrupt-on-change
AN2
COUT
T0CKI
INT
AN
—
—
A/D Channel 2 input
CMOS Comparator output
ST
—
—
—
—
—
Timer0 clock input
ST
External Interrupt
RA3/MCLR/VPP
RA3
TTL
ST
Input port with Interrupt-on-change
Master Clear
MCLR
VPP
HV
TTL
Programming voltage
RA4/T1G/AN3/OSC2/
CLKOUT
RA4
CMOS Bi-directional I/O w/ programmable pull-up and
Interrupt-on-change
T1G
AN3
ST
AN3
—
—
—
Timer1 gate
A/D Channel 3 input
Crystal/Resonator
OSC2
CLKOUT
XTAL
—
CMOS FOSC/4 output
RA5/T1CKI/OSC1/CLKIN
RA5
TTL
CMOS Bi-directional I/O w/ programmable pull-up and
Interrupt-on-change
T1CKI
OSC1
CLKIN
RC0
AN4
RC1
AN5
RC2
AN6
RC3
AN7
RC4
RC5
VSS
ST
XTAL
ST
—
—
—
Timer1 clock
Crystal/Resonator
External clock input/RC oscillator connection
RC0/AN4
RC1/AN5
RC2/AN6
RC3/AN7
TTL
CMOS Bi-directional I/O
A/D Channel 4 input
CMOS Bi-directional I/O
A/D Channel 5 input
CMOS Bi-directional I/O
A/D Channel 6 input
CMOS Bi-directional I/O
A/D Channel 7 input
AN4
TTL
—
AN5
TTL
—
AN6
TTL
—
AN7
TTL
—
RC4
RC5
VSS
VDD
CMOS Bi-directional I/O
CMOS Bi-directional I/O
TTL
Power
Power
—
—
Ground reference
Positive supply
VDD
Legend: Shade = PIC16F676 only
TTL = TTL input buffer
ST = Schmitt Trigger input buffer
DS40039E-page 6
© 2007 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
