STM8L151C4 datasheet(29/142 Pages) STMICROELECTRONICS

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STM8L151x4/6, STM8L152x4/6

Pinout and pin description

Table 4. Legend/abbreviation for table 5

Type

I= input, O = output, S = power supply

Level

Five-volt tolerant

3.6 V tolerant

Output

HS = high sink/source (20 mA)

Port and control

configuration

Input

float = floating, wpu = weak pull-up

Output

T = true open drain, OD = open drain, PP = push pull

Reset state

Bold X (pin state after reset release).

Unless otherwise specified, the pin state is the same during the reset phase (i.e.

“under reset”) and after internal reset release (i.e. at reset state).

Table 5. Medium-density STM8L151x4/6, STM8L152x4/6 pin description

number

Pin name

Input

Output

Default alternate

function

1 C3 NRST/PA1(1)

I/O

X Reset

PA1

2 B4

PA2/OSC_IN/

[USART1_TX](4)/

[SPI1_MISO] (4)

I/O

XX HS X

X Port A2

HSE oscillator input /

[USART1 transmit] /

[SPI1 master in- slave

out] /

3 C4

PA3/OSC_OUT/[USART1

_RX](4)/[SPI1_MOSI](4)

I/O

XX HS X

X Port A3

HSE oscillator output /

[USART1 receive]/ [SPI1

master out/slave in]/

PA4/TIM2_BKIN/

LCD_COM0(2)/ADC1_IN2/

COMP1_INP

I/O

(3)

XX HS X

X Port A4

Timer 2 - break input /

LCD COM 0 / ADC1

input 2 / Comparator 1

positive input

-4

4 D3

PA4/TIM2_BKIN/

[TIM2_ETR](4)/

LCD_COM0(2)/

ADC1_IN2/COMP1_INP

I/O

(3)

XX HS X

X Port A4

Timer 2 - break input /

[Timer 2 - external

trigger] / LCD_COM 0 /

ADC1 input 2 /

Comparator 1 positive

input

PA5/TIM3_BKIN/

LCD_COM1(2)/ADC1_IN1/

COMP1_INP

I/O

(3)

XX HS X

X Port A5

Timer 3 - break input /

LCD_COM 1 / ADC1

input 1/

Comparator 1 positive

input

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