CYW20732A0
Table 9. GPIO Pin Descriptionsa (Cont.)
Default Di- After POR Power Do-
Pin Number
23
Pin Name
P4
Alternate Function Description
■ GPIO: P4
rection State main
Input Input VDDO
floating
■ Peripheral UART: puart_rx
■ SPI_2: MOSI (master and slave)
■ IR_TX
24
P8
Input
Input
Input
floating
VDDO
VDDO
■ GPIO: P8
■ A/D converter input
■ External T/R switch control: ~tx_pd
■ GPIO: P33
P33
Input
floating
■ A/D converter input
■ SPI_2: MOSI (slave only)
■ Auxiliary clock output: ACLK1
■ Peripheral UART: puart_rx
■ GPIO: P11
1
P11
Input
Input
Input
floating
VDDO
VDDO
■ A/D converter input
■ XTALI32K
P27
PWM1
Input
floating
■ GPIO: P27
■ SPI_2: MOSI (master and slave)
■ Current: 16 mA
32
P12
Input
Input
Input
floating
VDDO
VDDO
■ GPIO: P12
■ A/D converter input
■ XTALO32K
P26
PWM0
Input
floating
■ GPIO: P26
■ SPI_2: SPI_CS (slave only)
■ SPI_1: MISO (master only)
■ Current: 16 mA
29
P13
PWM3
Input
Input
Input
floating
VDDO
VDDO
■ GPIO: P13
■ A/D converter input
P28
PWM2
Input
floating
■ GPIO: P28
■ A/D converter input
■ LED1
■ IR_TX
■ Current: 16 mA
Document Number: 002-14837 Rev. *L
Page 17 of 35
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