
PIC18F2XK20/4XK20
DS41303G-page 8
2010 Microchip Technology Inc.
TABLE 2:
PIC18F2XK20 PIN SUMMARY
Pi
n
DI
L
Pin
QUAD
I/
O
An
a
lo
g
C
o
m
p
ar
at
or
Re
fe
re
n
c
e
ECCP
EUSART
M
SSP
T
ime
rs
Sl
a
v
e
In
te
rr
u
p
ts
P
u
ll-
u
p
Ba
s
ic
2
27
RA0
AN0
C12IN0-
3
28
RA1
AN1
C12IN1-
4
1
RA2
AN2
C2IN+
VREF-/
CVREF
5
2
RA3
AN3
C1IN+
VREF+
6
3
RA4
C1OUT
T0CKI
7
4
RA5
AN4
C2OUT
HLVDIN
SS
10
7
RA6
OSC2/
CLKOUT
9
6
RA7
OSC1/
CLKIN
21
18
RB0
AN12
FLT0
INT0
Yes
22
19
RB1
AN10
C12IN3-
P1C
INT1
Yes
23
20
RB2
AN8
P1B
INT2
Yes
24
21
RB3
AN9
C12IN2-
Yes
25
22
RB4
AN11
P1D
KBI0
Yes
26
23
RB5
KBI1
Yes
PGM
27
24
RB6
KBI2
Yes
PGC
28
25
RB7
KBI3
Yes
PGD
11
8
RC0
T1OSO/
T13CKI
12
9
RC1
T1OSI
13
10
RC2
CCP1/
P1A
14
11
RC3
SCK/
SCL
15
12
RC4
SDI/
SDA
16
13
RC5
SDO
17
14
RC6
TX/CK
18
15
RC7
RX/DT
126
MCLR/
VPP
8
5
VSS
19
16
VSS
20
17
VDD
Note 1:
CCP2 multiplexed with RB3 when CONFIG3H<0> = 0
2:
CCP2 multiplexed with RC1 when CONFIG3H<0> = 1
3:
Input-only