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2010-2012 Microchip Technology Inc.
DS39977F-page 7
PIC18F66K80 FAMILY
Pin Diagrams (Continued)
64-Pin QFN(1)/TQFP
RA1
/A
N
1
/C1
IN
C
RB3/CANRX/CTED2/INT3
RA
2
/V
RE
F
-/
A
N
2
/C
2I
N
C
RA5/AN4/HLVDIN/T1CKI/SS
RA0
/CV
RE
F
/A
N0/UL
P
W
U
MC
LR
/RE
3
RC0/SOSCO/SCLKI
RC1
/SOSCI
RC2
/T
1
G/CCP2
RC3
/R
EF
O
/SCL
/SCK
RA3
/V
RE
F+/AN3
VSS
RB1/AN8/CTDIN/INT1
RB0/AN10/FLT0/INT0
RC4
/SDA/SDI
RC5
/SDO
R
C
6/
CCP
3
RB
6
/PG
C/
KBI
2
RB5
/T
0CKI/
T
3C
K
I/CCP5
/K
B
I1
RB
4
/AN9
/CT
PL
S/
KBI
0
RC7/CCP4
RD4/ECCP1/P1A/PSP4
RD5/P1B/PSP5
RD6/P1C/PSP6
RD7/P1D/PSP7
AVDD
RB2/CANTX/CTED1/INT2
OSC1/CLKIN/RA7
OSC2/CLKOUT/RA6
RE0/AN5/RD
RE1/AN6/C1OUT/WR
RE2/AN7/C2OUT/CS
RD0
/C1
INA
/P
SP0
RD1
/C1
INB
/P
SP1
RD3
/C
2I
NB
/C
T
M
UI
/PSP3
RD2
/C2
INA
/P
SP2
RF
0/
M
D
M
IN
RG0/RX1/DT1
RG1/CANTX2
VDD
RG2/T3CKI
RG3/TX1/CK1
RG4
/T
0
CKI
RF
1
RE5
/CANT
X
V
DD
V
SS
RE4
/CANRX
VDDCORE/VCAP
RF2/MDCIN1
RF3
AVDD
VDD
AVSS
VSS
RF4/MDCIN2
RF5
RF
6/
M
D
OUT
RF
7
V
SS
V
DD
RE6
/RX2
/DT
2
R
E
7/
TX
2/
C
K
2
RB7
/P
G
D/T
3G/KBI3
Note
1:
For the QFN package, it is recommended that the bottom pad be connected to VSS.
1
2
3
4
7
5
6
43
42
24
23
20
22
38
37
36
35
34
33
27
8
9
10
11
17
18
19
21
25
26
39
40
41
57
58
61
59
54
64
63
62
60
56
55
12
13
14
15
16
29
28
32
30
31
48
47
44
45
46
52
53
49
51
50
PIC18F6XK80
PIC18LF6XK80