STM8TL52X4 datasheet(22/84 Pages) STMICROELECTRONICS

22 / 84 page

Pin description

STM8TL52x4 STM8TL53x4

22/84

DocID022344 Rev 7

Table 3. Legends/abbreviations

Type

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

Level

Input

FT = 5 V tolerant, TC = 3 V capable

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 4. STM8TL5xx4 pin description

Pin no.

Pin name

Input

Output

Alternate function

Default

Remap

PB6/ PXS_TX14

I/O TC

Port B6

ProxSense

transmit 14

227

PA0(1)/SWIM/

BEEP

I/O TC

SWIM

Port A0(1)

SWIM input and

output

Beep output

328

PA1/SPI_NSS/

[TIM3_CH1]

I/O FT

Port A1

SPI master/

slave select

Timer 3 -

channel

414

PA2/SPI_SCK/

USART_CK/

[TIM3_CH2](2)

I/O FT

Port A2

SPI clock

Timer 3 -

channel

USART

synchronous

clock

525

PA3/SPI_MISO/

USART_TX/

I2C_SDA(2)

I/O FT

Port A3

SPI master in/

slave out

USART transmit

I2C data

636

PA4/SPI_MOSI/

USART_RX/

I2C_SCL

I/O FT

Port A4

SPI master out/

slave in

USART receive

I2C clock

7 VDD

-------

Digital

power

supply

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