STM8S207MB datasheet(28/103 Pages) STMICROELECTRONICS

28 / 103 page

Pinouts and pin description

STM8S207xx, STM8S208xx

28/103

Doc ID 14733 Rev 12

Table 5.

Legend/abbreviations for pinout table

Type

I= Input, O = Output, S = Power supply

Level

Input

CM = CMOS

Output

HS = High sink

Output speed

O1 = Slow (up to 2 MHz)

O2 = Fast (up to 10 MHz)

O3 = Fast/slow programmability with slow as default state after reset

O4 = Fast/slow programmability with fast as default state after reset

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 internal reset release)

Unless otherwise specified, the pin state is the same during the reset phase and

after the internal reset release.

Table 6.

Pin description

Pin number

Pin name

Input

Output

Default

alternate

function

Alternate

function

after remap

[option bit]

111

1 NRST

I/O

Reset

2 PA1/OSCIN

I/O X

XO1

Port A1

Resonator/

crystal in

3 PA2/OSCOUT

I/O X

Port A2

Resonator/

crystal out

444

VSSIO_1

I/O ground

555

4 VSS

Digital ground

5 VCAP

1.8 V regulator capacitor

777

6 VDD

Digital power supply

888

7 VDDIO_1

I/O power supply

PA3/TIM2_CH3

I/O X

Port A3

Timer 2 -

channel3

TIM3_CH1

[AFR1]

10 10 10

PA4/UART1_RX(1) I/O X

HS O3

Port A4 UART1 receive

11 11 11 10

PA5/UART1_TX

I/O X

HS O3

Port A5

UART1

transmit

12 12 12 11

PA6/UART1_CK

I/O X

HS O3

Port A6

UART1

synchronous

clock

PH0

I/O X

XHS O3

Port H0

PH1

I/O X

XHS O3

Port H1

PH2

I/O X

XO1

Port H2

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