PIC12F635/PIC16F636/639
20-Pin Diagram
SSOP
V
DD
RA5/T1CKI/OSC1/CLKIN
RA4/T1G/OSC2/CLKOUT
RA3/MCLR/V
PP
RC5
RC4/C2OUT
RC3/LFDATA/RSSI/CCLK/SDIO
V
DDT
(3)
LCZ
LCY
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
SS
RA0/C1IN+/ICSPDAT/ULPWU
RA1/C1IN-/V
REF
/ICSPCLK
RA2/TOCKI/INT/C1OUT
RC0/C2IN+
RC1/C2IN-/CS
RC2/SCLK/ALERT
V
SST
(4)
LCCOM
LCX
TABLE 4:
I/O
RA0
RA1
RA2
RA3
RA4
RA5
RC0
RC1
RC2
RC3
RC4
RC5
—
—
—
—
—
—
—
—
Note 1:
2:
3:
4:
(1)
20-PIN SUMMARY
Analog Front-End
—
—
—
—
—
—
—
—
ALERT
LFDATA/RSSI
—
—
—
—
LCX
LCY
LCZ
LCCOM
—
—
Comparators
C1IN+
C1IN-
C1OUT
—
—
—
C2IN+
C2IN-
—
—
C2OUT
—
—
—
—
—
—
—
—
—
Timer
—
—
T0CKI
—
T1G
T1CKI
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Interrupts
IOC
IOC
INT/IOC
IOC
IOC
IOC
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Pull-ups
Y
Y
Y
Y
(2)
Y
Y
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Basic
ICSPDAT/ULPWU
V
REF
/ICSPCLK
—
MCLR/V
PP
OSC2/CLKOUT
OSC1/CLKIN
—
CS
SCLK
CCLK/SDIO
—
—
V
DDT
(3)
V
SST
(4)
—
—
—
—
V
DD
V
SS
Pin
19
18
17
4
3
2
16
15
14
7
6
5
8
13
11
10
9
12
1
20
Input only.
Only when pin is configured for external MCLR.
V
DDT
is the supply voltage of the Analog Front-End section (PIC16F639 only). V
DDT
is treated as V
DD
in
this document unless otherwise stated.
V
SST
is the ground reference voltage of the Analog Front-End section (PIC16F639 only). V
SST
is treated
as V
SS
in this document unless otherwise stated.
PIC16F639
DS41232D-page 6
©
2007 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
