STM32F050C4 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STM32F050C4

Low- and medium-density advanced ARM™-based 32-bit MCU with up to 32 Kbytes Flash, timers, ADC and comm. interfaces

STMicroelectronics 

STM32F050xx

Pinouts and pin description

Table 8. Pin definitions (continued)

Pin number

Pin name

(function after

reset)

Pin functions

Notes

Alternate functions

Additional

functions

41 28 26

-

PB5

I/O FT

SPI1_MOSI,

I2S1_SD,

I2C1_SMBA,

TIM16_BKIN,

TIM3_CH2

42 29 27

-

PB6

I/O FTf

I2C1_SCL,

USART1_TX,

TIM16_CH1N

43 30 28

-

PB7

I/O FTf

I2C1_SDA,

USART1_RX,

TIM17_CH1N

44 31 1

1

BOOT0

I

B

Boot memory selection

45 32 -

-

PB8

I/O FTf

I2C1_SCL,

TIM16_CH1

46 -

-

-

PB9

I/O FTf

I2C1_SDA,

IR_OUT,

TIM17_CH1,

EVENTOUT

47 0 -

-

VSS

S

Ground

48 1 -

-

VDD

S

Digital power supply

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 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 a current sources (e.g. to drive an LED).

2. 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 STM32F05xx reference manual.

3. This alternate feature is available on standard dies only.

4. After reset, these pins are configured as SWDAT and SWCLK alternate functions, and the internal pull-up on SWDAT pin

and internal pull-down on SWCLK pin are activated.

Doc ID 023683 Rev 1

29/97

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