Datasheet

© 2007 Microchip Technology Inc. DS41232D-page 5
PIC12F635/PIC16F636/639
16-Pin Diagram
TABLE 3: 16-PIN SUMMARY
I/O Pin Comparators Timer Interrupts Pull-ups Basic
RA0 12 C1IN+ — IOC Y ICSPDAT/ULPWU
RA1 11 C1IN- — IOC Y VREF/ICSPCLK
RA2 10 C1OUT T0CKI INT/IOC Y —
RA3
(1)
3— — IOC Y
(2)
MCLR/VPP
RA4 2 — T1G IOC Y OSC2/CLKOUT
RA5 1 — T1CKI IOC Y OSC1/CLKIN
RC0 9 C2IN+ — — — —
RC1 8 C2IN- — — — —
RC2 7 — — — — —
RC36———— —
RC4 5 C2OUT — — — —
RC54———— —
— 16 — — — — VDD
—13———— VSS
— 14 — — — — NC
—15———— NC
Note 1: Input only.
2: Only when pin is configured for external MCLR.
1
2
3
4
9
10
11
12
5 6 7 8
16 15 14 13
PIC16F636
VDD NC NC V
SS
RA5/T1CKI/OSC1/CLKIN
RA4/AN3/T1G/OSC2/CLKOUT
RA3/MCLR
/VPP
RC5
RA0/C1IN+/ICSPDAT/ULPWU
RA1/C1IN-/V
REF/ICSPCLK
RA2/T0CKI/INT/C1OUT
RC0/C2IN+
RC4/C2OUT
RC3 RC2
RC1/C2IN-
QFN