Microchip Technology DM183021 Data Sheet
PIC18F2331/2431/4331/4431
DS39616D-page 6
2010 Microchip Technology Inc.
Pin Diagrams (Continued)
44-Pin TQFP
10
11
2
3
4
5
6
3
4
5
6
1
18
19
20
21 22
12 13
14
15
38
8
7
44
43
42 41
40
39
16
17
29
30
31
32
33
23
24
25
26
27
28
36
34
35
9
PIC18F4331
37
R
A
3/
A
N
3/V
RE
F
+/
CAP2
/Q
EA
R
A
2/A
N
2/
V
RE
F
-/
CAP1
/I
NDX
RA1
/AN1
RA0
/AN0
MC
L
R
/V
PP
/RE
3
NC
RB7
/KBI
3/
PG
D
RB6
/KBI
2/
PG
C
R
B
5/K
B
I1/
P
W
M
4/
P
G
M
RB4
/KBI
0
/PWM
5
NC
RC6
/T
X/C
K
/S
S
RC5
/INT
2/S
CK
(1
)
/S
CL
(1
)
RC4
/INT
1/S
DI
(1
)
/S
DA
(1
)
RD3
/SCK/SCL
RD2
/SDI/SDA
RD1
/SDO
RD0
/T
0
C
K
I/T
5CK
I
RC3
/T
0
C
KI
(1
)
/T
5CK
I
(1
)
/INT
0
RC2
/CCP1
/F
LT
B
RC1
/T
1
O
SI/CCP2
/F
LT
A
NC
NC
RC0/T1OSO/T1CKI
OSC2/CLKO/RA6
OSC1/CLKI/RA7
AV
RC0/T1OSO/T1CKI
OSC2/CLKO/RA6
OSC1/CLKI/RA7
AV
SS
AV
DD
RE2/AN8
RE1/AN7
RE0/AN6
RA5/AN5/LVDIN
RA4/AN4/CAP3/QEB
RE1/AN7
RE0/AN6
RA5/AN5/LVDIN
RA4/AN4/CAP3/QEB
RC7/RX/DT/SDO
RD4/FLTA
(2)
RD5/PWM4
(3)
RD6/PWM6
RD7/PWM7
RD7/PWM7
V
SS
V
DD
RB0/PWM0
RB1/PWM1
RB2/PWM2
RB3/PWM3
RB1/PWM1
RB2/PWM2
RB3/PWM3
PIC18F4431
Note 1:
RC3 is the alternate pin for T0CKI/T5CKI; RC4 is the alternate pin for SDI/SDA; RC5 is the alternate pin
for SCK/SCL.
for SCK/SCL.
2:
RD4 is the alternate pin for FLTA.
3:
RD5 is the alternate pin for PWM4.