CYW20738
Table 9. GPIO Pin Descriptionsa (Cont.)
Pin Number
Default Di-
rection
Power Do-
main
Pin Name
After POR
Alternate Function Description
40-pin
QFN
64-pin
BGA
35
F3
P13
PWM3
Input
Floating
VDDO ■ GPIO: P13
■ Keyboard scan output (column): KSO5
■ A/D converter input
■ Alternative Function: P28
37
38
D3
A2
P14
PWM2
Input
Input
Floating
Floating
VDDO ■ GPIO: P14
■ Keyboard scan output (column): KSO6
■ A/D converter input
P15
VDDO ■ GPIO: P15
■ Keyboard scan output (column): KSO7
■ A/D converter input
■ IR_RX
■ 60Hz_main
■ Alternative Function: P26
–
–
C8
H4
P16
P17
Input
Input
Floating
Floating
VDDO ■ GPIO: P16
■ Keyboard scan output (column): KSO8
VDDO ■ GPIO: P17
■ Keyboard scan output (column): KSO9
■ A/D converter input
–
–
–
–
–
C7
B8
A8
C6
G4
P18
P19
P20
P21
P22
Input
Input
Input
Input
Input
Floating
Floating
Floating
Floating
Floating
VDDO ■ GPIO: P18
■ Keyboard scan output (column): KSO10
■ A/D converter input
VDDO ■ GPIO: P19
■ Keyboard scan output (column): KSO11
■ A/D converter input
VDDO ■ GPIO: P20
■ Keyboard scan output (column): KSO12
■ A/D converter input
VDDO ■ GPIO: P21
■ Keyboard scan output (column): KSO13
■ A/D converter input
VDDO ■ GPIO: P22
■ Keyboard scan output (column): KSO14
■ A/D converter input
Document Number: 002-14891 Rev. *C
Page 21 of 42
CYPRESS [ CYPRESS ]
