STM32G474CB datasheet(73/236 Pages) STMICROELECTRONICS

73 / 236 page

DS12288 Rev 4

73/236

STM32G474xB STM32G474xC STM32G474xE

Pinouts and pin description

125

PE0

I/O

TIM4_ETR,

TIM20_CH4N,

TIM16_CH1,

TIM20_ETR,

USART1_TX,

FMC_NBL0,

EVENTOUT

126

PE1

I/O

TIM17_CH1,

TIM20_CH4,

USART1_RX,

FMC_NBL1,

EVENTOUT

127

VSS

100

128

VDD

1. Function availability depends on the chosen device.

2. 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 (e.g. to drive an LED).

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

the RTC registers which are not reset by the system reset. For details on how to manage these GPIOs, refer to the Backup

domain and RTC register descriptions in the reference manual RM0440 "STM32G4 Series advanced Arm®-based 32-bit

MCUs".

4. After reset, these pins are configured as JTAG/SW debug alternate functions, and the internal pull-up on PA15, PA13, PB4

pins and the internal pull-down on PA14 pin are activated.

It is recommended to set PB8 in another mode than analog mode after startup to limit consumption if the pin is left

unconnected.

Table 12. STM32G474xB/xC/xE pin definition (continued)

Pin Number

Alternate

functions

Additional

functions

STM32G474CB Datasheet(PDF) 73 Page - STMicroelectronics

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