PIC12F639 Microchip Technology, PIC12F639 Datasheet - Page 11

• Manufacturer Part Number: PIC12F639
• Description: (PIC12F635 / PIC12F636 / PIC12F639) 8/14-PIN FLASH-BASED / 8-BIT CMOS MICROCONTROLLERS WITH NANOWATT TECHNOLOGY
• Manufacturer: Microchip Technology

TABLE 1-2:
© 2005 Microchip Technology Inc.
V
RA5/T1CKI/OSC1/CLKIN
RA4/T1G/OSC2/CLKOUT
RA3/MCLR/V
RC5
RC4/C2OUT
RC3
RC2
RC1/C2IN-
RC0/C2IN+
RA2/T0CKI/INT/C1OUT
RA1/C1IN-/V
RA0/C1IN+/ICSPDAT/ULPWU
V
Legend: AN = Analog input or output
DD
SS
HV = High Voltage
TTL = TTL compatible input
Name
REF
PP
/ICSPCLK
PIC16F636 PINOUT DESCRIPTIONS
ICSPCLK
Function
ICSPDAT
CLKOUT
ULPWU
C2OUT
C1OUT
CLKIN
T1CKI
MCLR
C2IN+
T0CKI
C1IN+
OSC1
OSC2
C2IN-
C1IN-
RC5
RC4
RC3
RC2
RC1
RC0
RA2
RA5
RA4
T1G
RA3
RA1
RA0
V
V
V
INT
DD
PP
SS
Input
XTAL
Type
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
HV
AN
AN
AN
AN
AN
ST
ST
ST
ST
ST
ST
ST
ST
—
—
—
—
D
D
XTAL = Crystal
CMOS = CMOS compatible input or output
ST
PIC12F635/PIC16F636/639
Preliminary
Output
CMOS General purpose I/O. Individually controlled
CMOS General purpose I/O. Individually controlled
CMOS T
CMOS General purpose I/O.
CMOS General purpose I/O.
CMOS Comparator 2 output.
CMOS General purpose I/O.
CMOS General purpose I/O.
CMOS General purpose I/O.
CMOS General purpose I/O.
CMOS General purpose I/O. Individually controlled
CMOS Comparator 1 output.
CMOS General purpose I/O. Individually controlled
CMOS Serial programming data I/O.
XTAL
Type
= Schmitt Trigger input with CMOS levels
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
interrupt-on-change. Individually enabled pull-up/pull-down.
interrupt-on-change. Individually enabled pull-up/pull-down.
interrupt-on-change. Individually enabled pull-up/pull-down.
interrupt-on-change. Individually enabled pull-up/pull-down.
Power supply for microcontroller.
Timer1 clock.
XTAL connection.
T
Timer1 gate.
XTAL connection.
General purpose input. Individually controlled
interrupt-on-change.
Master Clear Reset. Pull-up enabled when
configured as MCLR.
Programming voltage.
Comparator 1 input – negative.
Comparator 1 input – positive.
External clock for Timer0.
External interrupt.
interrupt-on-change. Individually enabled pull-up/pull-down.
Comparator 1 input – negative.
Serial programming clock.
General purpose I/O. Individually controlled
Selectable Ultra Low-Power Wake-up pin.
Comparator 1 input – positive.
Ultra Low-Power Wake-up input.
Ground reference for microcontroller.
OSC
OSC
/4 reference clock.
reference clock.
Description
D = Direct
DS41232B-page 9