Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
~{INT}
1
Open Collector
Left
A1
2
Input
Input
A
Left
~{RESET}
3
Input
Control
Left
IO0_0
4
Bi-Directional
GPIO
IO0
Right
IO0_1
5
Bi-Directional
GPIO
IO0
Right
IO0_2
6
Bi-Directional
GPIO
IO0
Right
IO0_3
7
Bi-Directional
GPIO
IO0
Right
IO0_4
8
Bi-Directional
GPIO
IO0
Right
IO0_5
9
Bi-Directional
GPIO
IO0
Right
IO0_6
10
Bi-Directional
GPIO
IO0
Right
IO0_7
11
Bi-Directional
GPIO
IO0
Right
V_{SS}
12
Power In
Power
Bottom
IO1_0
13
Bi-Directional
GPIO
IO1
Right
IO1_1
14
Bi-Directional
GPIO
IO1
Right
IO1_2
15
Bi-Directional
GPIO
IO1
Right
IO1_3
16
Bi-Directional
GPIO
IO1
Right
IO1_4
17
Bi-Directional
GPIO
IO1
Right
IO1_5
18
Bi-Directional
GPIO
IO1
Right
IO1_6
19
Bi-Directional
GPIO
IO1
Right
IO1_7
20
Bi-Directional
GPIO
IO1
Right
A0
21
Input
Input
A
Left
SCL
22
Input
Communication
Left
SDA
23
Bi-Directional
Communication
Left
PCA9539xD
