STM32F334X4 datasheet(38/115 Pages) STMICROELECTRONICS

38 / 115 page

Pinout and pin descriptions

STM32F334x4 STM32F334x6 STM32F334x8

38/115

DocID025409 Rev 5

PB5

I/O

TIM16_BKIN,

TIM3_CH2,

I2C1_SMBA,

SPI1_MOSI,

USART2_CK,

TIM17_CH1,

HRTIM1_EEV6,

EVENTOUT

PB6

I/O

FTf

TIM16_CH1N,

TSC_G5_IO3,

I2C1_SCL,

USART1_TX,

HRTIM1_SCIN,

HRTIM1_EEV4,

EVENTOUT

PB7

I/O

FTf

TIM17_CH1N,

TSC_G5_IO4,

I2C1_SDA,

USART1_RX,

TIM3_CH4,

HRTIM1_EEV3,

EVENTOUT

BOOT0

PB8

I/O

FTf

TIM16_CH1,

TSC_SYNC, I2C1_SCL,

USART3_RX, CAN_RX,

TIM1_BKIN,

HRTIM1_EEV8,

EVENTOUT

PB9

I/O

FTf

TIM17_CH1, I2C1_SDA,

IR_OUT, USART3_TX,

COMP2_OUT, CAN_TX,

HRTIM1_EEV5,

EVENTOUT

VSS

148

VDD

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

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

registers which is not reset by the main reset. For details on how to manage these GPIOs, refer to the Battery backup domain and BKP

2. Fast ADC channel.

These GPIOs offer a reduced touch sensing sensitivity. It is thus recommended to use them as sampling capacitor I/O.

Table 13. STM32F334x4/6/8 pin definitions (continued)

Pin Number

Pin name (function

after reset)

Pin functions

LQFP

Alternate

functions

Additional functions

STM32F334X4 Datasheet(PDF) 38 Page - STMicroelectronics

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