Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
PB5
1
Bi-Directional
GPIO
PB
Right
PB6
2
Bi-Directional
GPIO
PB
Right
PB7
3
Bi-Directional
GPIO
PB
Right
~{RESET}
4
Input
Control
Left
VCC
5
Power In
Power
Top
GND
6
Power In
Power
Bottom
XTAL2
7
Output
Clock
Left
XTAL1
8
Input
Clock
Left
PD0
9
Bi-Directional
GPIO
PD
Right
PD1
10
Bi-Directional
GPIO
PD
Right
PD2
11
Bi-Directional
GPIO
PD
Right
PD3
12
Bi-Directional
GPIO
PD
Right
PD4
13
Bi-Directional
GPIO
PD
Right
PD5
14
Bi-Directional
GPIO
PD
Right
PD6
15
Bi-Directional
GPIO
PD
Right
PD7
16
Bi-Directional
GPIO
PD
Right
VCC
17
Passive
Power
Top
GND
18
Passive
Power
Bottom
PC0
19
Bi-Directional
GPIO
PC
Right
PC1
20
Bi-Directional
GPIO
PC
Right
PC2
21
Bi-Directional
GPIO
PC
Right
PC3
22
Bi-Directional
GPIO
PC
Right
PC4
23
Bi-Directional
GPIO
PC
Right
ATmega644P-20A
