STM8S003K3 datasheet(24/100 Pages) STMICROELECTRONICS

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Alternate

function after

remap [option

bit]

Default

alternate

function

Main

function

(after

reset)

Output

Input

Type

Pin name

Pin no.

Speed

High

sink

(1)

Ext.

interr.

wpu

floating

UFQFPN20

TSSOP20

Timer 1 -

channel 1

[AFR0]

SPI master

out/slave in

Port

I/O

PC6/

SPI_MOSI

[TIM1_ CH1]

Timer 1 -

channel 2

[AFR0]

SPI master

in/ slave

out

Port

I/O

PC7/

SPI_MISO

[TIM1_ CH2]

SWIM data

interface

Port

I/O

PD1/

SWIM

(4)

Timer 2 -

channel 3

[AFR1]

Analog

input 3

Port

I/O

PD2/AIN3/[TIM2_

CH3]

Analog

input 4/

Port

I/O

PD3/ AIN4/

TIM2_ CH2/

ADC_ ETR

Timer 2 -

channel

2/ADC

external

trigger

(1)

I/O pins used simultaneously for high current source/sink must be uniformly spaced around the package. In addition, the total

driven current must respect the absolute maximum ratings.

(2)

When the MCU is in halt/active-halt mode, PA1 is automatically configured in input weak pull-up and cannot be used for waking

up the device. In this mode, the output state of PA1 is not driven. It is recommended to use PA1 only in input mode if halt/active-halt

is used in the application.

(3)

In the open-drain output column, "T" defines a true open-drain I/O (P-buffer, weak pull-up, and protection diode to VDD are

not implemented).

(4)

The PD1 pin is in input pull-up during the reset phase and after internal reset release.

Alternate function remapping

5.3

As shown in the rightmost column of the pin description table, some alternate functions can

be remapped at different I/O ports by programming one of eight AFR (alternate function

remap) option bits. When the remapping option is active, the default alternate function is no

longer available.

To use an alternate function, the corresponding peripheral must be enabled in the peripheral

registers.

Alternate function remapping does not effect GPIO capabilities of the I/O ports (see the GPIO

section of the family reference manual, RM0016).

DocID018576 Rev 3

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