STM32W108HB datasheet(22/179 Pages) STMICROELECTRONICS

22 / 179 page

Pinout and pin description

STM32W108CB, STM32W108HB

22/179

Doc ID 16252 Rev 2

PA2

I/O

Digital I/O

TIM2_CH4

(see also

Pin 20)

Timer 2 channel 4 output

Disable remap with TIM2_OR[7]

Enable timer output in TIM2_CCER

Select alternate output function with GPIO_PACFGL[11:8]

Timer 2 channel 4 input. Disable remap with TIM2_OR[7].

SC2SCL

I/O

TWI clock of Serial Controller 2

Either disable timer output in TIM2_CCER or enable remap with

TIM2_OR[7]

Select TWI with SC2_MODE

Select alternate open-drain output function with

GPIO_PACFGL[11:8]

SC2SCLK

SPI master clock of Serial Controller 2

Either disable timer output in TIM2_CCER or enable remap with

TIM2_OR[7]

Enable master with SC2_SPICFG[4]

Select SPI with SC2_MODE

Select alternate output function with GPIO_PACFGL[11:8]

SPI slave clock of Serial Controller 2

Enable slave with SC2_SPICFG[4]

Select SPI with SC2_MODE

PA3

I/O

Digital I/O

SC2nSSEL

SPI slave select of Serial Controller 2

Enable slave with SC2_SPICFG[4]

Select SPI with SC2_MODE

TRACECLK

(see also Pin

36)

Synchronous CPU trace clock

Either disable timer output in TIM2_CCER or enable remap with

TIM2_OR[5]

Enable trace interface in ARM core

Select alternate output function with GPIO_PACFGL[15:12]

TIM2_CH2

(see also Pin

31)

Timer 2 channel 2 output

Disable remap with TIM2_OR[5]

Enable timer output in TIM2_CCER

Select alternate output function with GPIO_PACFGL[15:12]

Timer 2 channel 2 input. Disable remap with TIM2_OR[5].

Table 1.

Pin descriptions (continued)

48-Pin

Packag

e Pin

no.

40-Pin

Packag

e Pin

no.

Signal

Direction

Description

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