STM8L151C2 datasheet(29/122 Pages) STMICROELECTRONICS

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DocID018780 Rev 9

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STM8L151x2, STM8L151x3

Pinout and pin description

43 29 25 17 20

PC4/USART_CK]/

I2C_SMB/CCO/

ADC1_IN4/

COMP1_INP/

COMP2_INM

I/O

HS X

X Port C4

USART synchronous

clock / I2C1_SMB /

Configurable clock

output / ADC1_IN4/

Comparator1 positive

input/Comparator 2

negative input

44 30 26 18 1

PC5/OSC32_IN

/[SPI1_NSS](2)/

[USART_TX](2)/

TIM2_CH1(6)

I/O

HS X

X Port C5

LSE oscillator input /

[SPI master/slave

select] / [USART

transmit]/

Timer 2 -channel 1(6)

45 31 27 19 2

PC6/OSC32_OUT/

[SPI_SCK](2)/

[USART_RX](2)/

TIM2_CH2(6)

I/O

HS X

X Port C6

LSE oscillator output /

[SPI clock] / [USART

receive]/

Timer 2 -channel 2(6)

PC7/ADC1_IN3/

COMP1_INP/

COMP2_INM

I/O

HS X

X Port C7

ADC1_IN3/

Comparator1 positive

input/Comparator 2

negative input

20 986

PD0/TIM3_CH2/

[ADC1_TRIG](2)/

ADC1_IN22/

COMP1_INP/

COMP2_INP

I/O

HS X

X Port D0

Timer 3 - channel 2 /

[ADC1_Trigger] /

ADC1_IN22/

Comparator1 positive

input/Comparator 2

positive input

21 10 9

PD1/TIM3_ETR/

ADC1_IN21/

COMP1_INP/

COMP2_INP

I/O

HS X

X Port D1

Timer 3 - external

trigger / ADC1_IN21/

Comparator1 positive

input/Comparator 2

positive input

22 11 10

PD2/ADC1_IN20/

COMP1_INP

I/O

HS X

X Port D2

ADC1_IN20/

Comparator1 positive

input

23 12 11

PD3/ADC1_IN19/

RTC_CALIB(7)/

COMP1_INP

I/O

HS X

X Port D3

ADC1_IN19/

RTC calibration(7)/

Comparator1 positive

input

33 21 20

PD4/ADC1_IN10/

COMP1_INP

I/O

HS X

X Port D4

ADC1_IN10/

Comparator1 positive

input

Table 4. Low-density STM8L151x2/3 pin description (continued)

Pin number

Pin name

Input

Output

Default alternate

function

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