STM32F303XD datasheet(52/173 Pages) STMICROELECTRONICS

52 / 173 page

Pinout and pin description

STM32F303xD STM32F303xE

52/173

DocID026415 Rev 5

139 PB8

I/O

FTf

TIM16_CH1, TIM4_CH3,

TSC_SYNC, I2C1_SCL,

USART3_RX,

COMP1_OUT, CAN_RX,

TIM8_CH2, TIM1_BKIN,

EVENTOUT

140 PB9

I/O

FTf

TIM17_CH1, TIM4_CH4,

I2C1_SDA, IR-OUT,

USART3_TX,

COMP2_OUT, CAN_TX,

TIM8_CH3, EVENTOUT

141 PE0

I/O

(1)

EVENTOUT, TIM4_ETR,

TIM16_CH1, TIM20_ETR,

USART1_TX, FMC_NBL0

142 PE1

I/O

(1)

EVENTOUT, TIM17_CH1,

TIM20_CH4,

USART1_RX, FMC_NBL1

143 VSS

100 C4

A9,

A10

B10

144 VDD

1. Function availability depends on the chosen device.

2. 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 register description sections in the RM0316 reference manual.

3. Fast ADC channel.

4. The VREF+ functionality is not available on the 64-pin package. In this package, the VREF+ is internally connected to

VDDA.

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

Table 13. STM32F303xD/E pin definitions (continued)

Pin number

Pin name

(function after

reset)

Alternate functions

Additional functions

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