STM8L051F3 datasheet(24/96 Pages) STMICROELECTRONICS

24 / 96 page

Pin description

STM8L051F3

24/96

DS9178 Rev 4

Table 4. STM8L051F3 pin description

n°

Pin name

Input

Output

Default alternate function

4 NRST/PA1(1)

I/O -

-HS -

X Reset

PA1

PA2/OSC_IN/[USART_TX](2)/

[SPI_MISO] (2)

I/O -

X XX HS X

Port

HSE oscillator input / [USART

transmit] / [SPI master in- slave out]

PA3/OSC_OUT/[USART_RX](2)

/[SPI_MOSI](2)

I/O -

X XX HS X

Port

HSE oscillator output / [USART

receive]/ [SPI master out/slave in]

10 PB0(3)/TIM2_CH1/ADC1_IN18 I/O -

X XX HS X

Port

Timer 2 - channel 1 / ADC1_IN18

11 PB1/TIM3_CH1/ADC1_IN17

I/O -

X XX HS X

Port

Timer 3 - channel 1 / ADC1_IN17

12 PB2/ TIM2_CH2/ ADC1_IN16

I/O -

X XX HS X

Port

Timer 2 - channel 2 ADC1_IN16

PB3/TIM2_ETR/

ADC1_IN15/RTC_ALARM

I/O -

X XX HS X

Port

Timer 2 - external trigger /

ADC1_IN15 / RTC_ALARM

14 PB4(3)/SPI1_NSS/ADC1_IN14

I/O -

X XX HS X

Port

SPI master/slave select /

ADC1_IN14

PB5/SPI_SCK/

/ADC1_IN13

I/O -

X XX HS X

Port

[SPI clock] / ADC1_IN13

PB6/SPI1_MOSI/

ADC1_IN12

I/O -

X XX HS X

Port

SPI master out/

slave in / ADC1_IN12

17 PB7/SPI1_MISO/ADC1_IN11

I/O -

X XX HS X

Port

SPI1 master in- slave out/

ADC1_IN11

18 PC0/I2C_SDA

I/O FT X

-X

- T(4)

Port

I2C data

19 PC1/I2C_SCL

I/O FT X

-X

- T(3)

Port

I2C clock

PC4/USART_CK/

I2C_SMB/CCO/ADC1_IN4

I/O -

X XX HS X

Port

USART synchronous clock /

I2C1_SMB / Configurable clock

output / ADC1_IN4

PC5/OSC32_IN /[SPI1_NSS](2)/

[USART_TX]/[TIM2_CH1]

I/O -

X XX HS X

Port

LSE oscillator input / [SPI

master/slave select] / [USART

transmit]/Timer 2 -channel 1

STM8L051F3 Datasheet(PDF) 24 Page - STMicroelectronics

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