PIC12F635/PIC16F636/639
TABLE 1-1:
PIC12F635 PINOUT DESCRIPTIONS
Input
Type
Output
Type
Name
Function
Description
GP0/C1IN+/ICSPDAT/ULPWU
GP0
TTL
—
General purpose I/O. Individually controlled
interrupt-on-change. Individually enabled pull-up/pull-down.
Selectable Ultra Low-Power Wake-up pin.
C1IN+
ICSPDAT
ULPWU
GP1
AN
TTL
AN
—
Comparator 1 input – positive.
CMOS Serial programming data I/O.
Ultra Low-Power Wake-up input.
—
GP1/C1IN-/ICSPCLK
TTL
CMOS General purpose I/O. Individually controlled
interrupt-on-change. Individually enabled pull-up/pull-down.
C1IN-
ICSPCLK
GP2
AN
ST
ST
—
—
Comparator 1 input – negative.
Serial programming clock.
GP2/T0CKI/INT/C1OUT
CMOS General purpose I/O. Individually controlled
interrupt-on-change. Individually enabled pull-up/pull-down.
T0CKI
INT
ST
ST
—
—
—
External clock for Timer0.
External interrupt.
C1OUT
GP3
CMOS Comparator 1 output.
GP3/MCLR/VPP
TTL
—
General purpose input. Individually controlled
interrupt-on-change.
MCLR
VPP
ST
HV
—
—
Master Clear Reset. Pull-up enabled when configured as MCLR.
Programming voltage.
GP4/T1G/OSC2/CLKOUT
GP4
TTL
CMOS General purpose I/O. Individually controlled
interrupt-on-change. Individually enabled pull-up/pull-down.
T1G
OSC2
CLKOUT
GP5
ST
—
—
Timer1 gate.
XTAL XTAL connection.
—
CMOS TOSC/4 reference clock.
GP5/T1CKI/OSC1/CLKIN
TTL
CMOS General purpose I/O. Individually controlled
interrupt-on-change. Individually enabled pull-up/pull-down.
T1CKI
OSC1
CLKIN
VDD
ST
XTAL
ST
—
—
—
—
—
Timer1 clock.
XTAL connection.
TOSC reference clock.
VDD
VSS
D
Power supply for microcontroller.
Ground reference for microcontroller.
VSS
D
Legend: AN = Analog input or output
HV = High Voltage
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels
XTAL = Crystal
D = Direct
TTL = TTL compatible input
DS41232D-page 12
© 2007 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
