STM32F378RC datasheet(40/131 Pages) STMICROELECTRONICS

40 / 131 page

Pinouts and pin description

STM32F378xx

40/131

DocID025608 Rev 4

B4 59 43 A6

PB7

I/O

FTf

I2C1_SDA, USART1_RX,

TIM17_CH1N, TIM3_CH4,

TIM4_CH2, TIM19_CH2,

TIM15_CH2, TSC_G5_IO4

A4 60 44 C7

BOOT0

Boot memory selection

A3 61 45 B7

PB8

I/O

FTf

SPI2_SCK/I2S2_CK,

I2C1_SCL, USART3_TX,

CAN_RX, CEC,

TIM16_CH1, TIM4_CH3,

TIM19_CH3, COMP1_OUT,

TSC_SYNC

B3 62 46 A7

PB9

I/O

FTf

SPI2_NSS/I2S2_WS,

I2C1_SDA, USART3_RX,

CAN_TX, IR_OUT,

TIM17_CH1, TIM4_CH4,

TIM19_CH4, COMP2_OUT

PE0

I/O

(1)

USART1_TX, TIM4_ETR

PE1

I/O

(1)

USART1_RX

D3 63 47 C6

VSS_1

Ground

VSS_1

(1)

Ground

VSS_1

(1)

Ground

100 C4 64 48 D6

VDD_1

Digital power supply

1. When using the small packages (48 and 64 pin packages), the GPIO pins which are not present on these packages, must

not be configured in analog mode.

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 RM0313 reference manual.

3. These pins are powered by VDDA.

4. These pins are powered by VDDSD12.

5. These pins are powered by VDDSD3.

Table 11. STM32F378xx pin definitions (continued)

Pin numbers

Pin name

(function after

reset)

type

Pin functions

Alternate function

Additional functions

STM32F378RC Datasheet(PDF) 40 Page - STMicroelectronics

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