Table 4 shows the pin functions by primary and alternate purpose, and illustrates which packages contain each pin.
Table 4. Pin Functions by Primary and Alternate Purpose
Drive
Pin
Group
Primary
Function
Secondary
Function
Tertiary
Function
Quaternary
Function
Slew Rate / Pull-up /
Pin on
Pin on 81
MAPBGA LQFP/QFN
Pin on 64
Strength /
Control1 Pull-down2 100 LQFP
Control1
ADC
AN7
AN6
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
—
Low
Low
FAST
FAST
FAST
FAST
FAST
FAST
FAST
FAST
N/A
—
—
51
H9
G9
G8
F9
33
34
35
36
28
27
26
25
—
—
32
29
31
30
47
46
48
45
55
—
—
8
52
AN5
—
Low
—
53
AN4
—
Low
—
54
AN3
—
Low
—
46
G7
G6
H6
J6
AN2
—
Low
—
45
AN1
—
Low
—
44
AN0
—
Low
—
43
SYNCA3
SYNCB3
VDDA
VSSA
VRH
—
N/A
—
—
—
—
—
N/A
N/A
—
—
—
—
—
N/A
N/A
—
50
H8
H7, J9
J8
—
—
N/A
N/A
—
47
—
—
N/A
N/A
—
49
VRL
—
—
N/A
N/A
—
48
J7
Clock
Generation
EXTAL
XTAL
—
—
N/A
N/A
—
73
B9
C9
B8
C8
A6
—
—
—
N/A
N/A
—
72
VDDPLL
VSSPLL
ALLPST
DDATA[3:0]
PST[3:0]
SCL
—
—
N/A
N/A
—
74
—
—
N/A
N/A
—
71
Debug Data
—
—
High
High
High
PDSR[0]
PDSR[0]
FAST
FAST
FAST
PSRR[0]
PSRR[0]
—
86
84,83,78,77
70,69,66,65
10
—
GPIO
GPIO
GPIO
GPIO
—
—
—
—
I2C
UTXD2
URXD2
pull-up4
pull-up4
E1
E2
SDA
11
9