STM8AL3LE8X datasheet(30/133 Pages) STMICROELECTRONICS

30 / 133 page

Pin description

STM8AL31E8x STM8AL3LE8x

30/133

DocID027180 Rev 5

Table 4. Legend/abbreviation

Type

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

Level

FT: Five-volt 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. High-density STM8AL3xE8x pin description

number

Pin name

Input

Output

Default alternate function

- PH0/LCD SEG 36 (3)

I/O FT(5) X

XX HS X

X Port H0 LCD segment 36

- PH1/LCD SEG 37 (3)

I/O FT(5) X

XX HS X

X Port H1 LCD segment 37

- PH2/LCD SEG 38 (3)

I/O FT(5) X

XX HS X

X Port H2 LCD segment 38

- PH3/LCD SEG 39 (3)

I/O FT(5) X

XX HS X

X Port H3 LCD segment 39

2 NRST/PA1(1)

I/O

-HS X

X Reset

PA1

PA2/OSC_IN/

[USART1_TX](2)/

[SPI1_MISO] (2)

I/O

XX HS X

X Port A2

HSE oscillator input /

[USART1 transmit] / [SPI1

master in- slave out] /

PA3/OSC_OUT/[USART1

_RX](2)/[SPI1_MOSI](2)

I/O

XX HS X

X Port A3

HSE oscillator output /

[USART1 receive]/ [SPI1

master out/slave in]/

PA4/TIM2_BKIN/

[TIM2_ETR](2)

LCD_COM0(3)/ADC1_IN2

COMP1_INP

I/O FT(5) X

XX HS X

X Port A4

Timer 2 - break input /

/[Timer 2 - trigger] /

LCD COM 0 / ADC1 input

2/Comparator 1 positive

input

10 6

PA5/TIM3_BKIN/

[TIM3_ETR](2)/

LCD_COM1(3)/ADC1_IN1/

COMP1_INP

I/O FT(5) X

XX HS X

X Port A5

Timer 3 - break input /

[Timer 3 - trigger] /

LCD_COM 1 /

ADC1 input 1/Comparator 1

positive input

11 7

PA6/ADC1_TRIG/

LCD_COM2(3)/ADC1_IN0/

COMP1_INP

I/O FT(5) X

XX HS X

X Port A6

ADC1 - trigger / LCD_COM2

/ ADC1 input 0/Comparator

1 positive input

STM8AL3LE8x Datasheet(PDF) 30 Page - STMicroelectronics

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