STM32G031F6 datasheet(39/117 Pages) STMICROELECTRONICS

39 / 117 page

DS12992 Rev 2

39/117

STM32G031x4/x6/x8

Pinouts, pin description and alternate functions

-B4 20 23 27 42

PB3

I/O

SPI1_SCK/I2S1_CK,

TIM1_CH2, TIM2_CH2,

USART1_RTS_DE_CK,

EVENTOUT

-B4 20 24 28 43

PB4

I/O

SPI1_MISO/I2S1_MCK,

TIM3_CH1, USART1_CTS,

TIM17_BK, EVENTOUT

8B4 20 25 29 44

PB5

I/O

SPI1_MOSI/I2S1_SD,

TIM3_CH2, TIM16_BK,

LPTIM1_IN1, I2C1_SMBA

WKUP6

8B4 20 26 30 45

PB6

I/O

FT_f

USART1_TX, TIM1_CH3,

TIM16_CH1N, SPI2_MISO,

LPTIM1_ETR, I2C1_SCL,

EVENTOUT

PB7

I/O

FT_f

USART1_RX, SPI2_MOSI,

TIM17_CH1N, LPTIM1_IN2,

I2C1_SDA, EVENTOUT

PVD_IN

1 A5 1

27 31

PB7

I/O

FT_fa

USART1_RX, SPI2_MOSI,

TIM17_CH1N, LPTIM1_IN2,

I2C1_SDA, EVENTOUT

ADC_IN11, PVD_IN

1 A5 1

28 32 47

PB8

I/O

FT_f

SPI2_SCK, TIM16_CH1,

I2C1_SCL, EVENTOUT

1 B6 2

PB9

I/O

FT_f

IR_OUT, TIM17_CH1,

SPI2_NSS, I2C1_SDA,

EVENTOUT

1. PC13, PC14 and PC15 are supplied through the power switch. Since the switch only sinks a limited amount of current (3

mA), the use of GPIOs PC13 to PC15 in output mode is limited:

- The speed should not exceed 2 MHz with a maximum load of 30 pF

- These GPIOs must not be used as current sources (for example to drive a LED).

2. After an RTC domain power-up, PC13, PC14 and PC15 operate as GPIOs. Their function then depends on the content of

the RTC registers. The RTC registers are not reset upon system reset. For details on how to manage these GPIOs, refer to

the RTC domain and RTC register descriptions in the RM0444 reference manual.

3. Pins PA9 and PA10 can be remapped in place of pins PA11 and PA12 (default mapping), using SYSCFG_CFGR1 register.

4. Upon reset, these pins are configured as SWD alternate functions, and the internal pull-up on PA13 pin and the internal pull-

down on PA14 pin are activated.

Table 12. Pin assignment and description (continued)

Pin name

(function

upon reset)

Alternate

functions

Additional

functions

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