STM8L151C8T6 datasheet(36/129 Pages) STMICROELECTRONICS

36 / 129 page

Pin description

STM8L15xx8, STM8L15xR6

36/129

Doc ID 17943 Rev 5

21 17

PG3/LCD SEG 31 (3)/

[TIM3_ETR]

I/O FT(5) X

XX HS X

X Port G3

LCD segment 31/

[Timer 3 - trigger]

PH4/USART2_RX

I/O FT(5) X

XX HS X

X Port H4 USART2 receive

PH5/USART2_TX

I/O FT(5) X

XX HS X

X Port H5 USART2 transmit

PH6/USART2_CK/

TIM5_CH1

I/O FT(5) X

XX HS X

X Port H6

USART2 synchronous

clock/ Timer 5 - channel 1

PH7/TIM5_CH2

I/O FT(5) X

XX HS X

X Port H7 Timer 5 - channel 2

-9 VSS/VSSA/VREF-

I/O ground / Analog ground voltage /

ADC1 negative voltage reference

- VSSA/VREF-

Analog ground voltage /

ADC1 negative voltage reference

37 29

- VDD3

IOs supply voltage

38 30

- VSS3

IOs ground voltage

PA0(8)/[USART1_CK](2)/

SWIM/BEEP/IR_TIM (9)

I/O

XHS X

X Port A0

[USART1 synchronous

clock](2) / SWIM input and

output / Beep output / Infra-

red Timer output

68 56 40 VSS2

IOs ground voltage

67 55 39 VDD2

IOs supply voltage

- VSS4

IOs ground voltage

- VDD4

IOs supply voltage

At power-up, the PA1/NRST pin is a reset input pin with pull-up. To be used as a general purpose pin (PA1), it can be

configured only as output push-pull, not as output open-drain nor as a general purpose input. Refer to Section Configuring

NRST/PA1 pin as general purpose output in the STM8L15xx and STM8L16xx reference manual (RM0031).

[ ] Alternate function remapping option (if the same alternate function is shown twice, it indicates an exclusive choice not a

duplication of the function).

Available on STM8L152xx devices only.

A pull-up is applied to PB0 and PB4 during the reset phase. These two pins are input floating after reset release.

In the 5 V tolerant I/Os, the protection diode to VDD is not implemented.

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).

Available on STM8L152xx devices only. On STM8L151xx devices it is reserved and must be tied to VDD.

The PA0 pin is in input pull-up during the reset phase and after reset release.

High Sink LED driver capability available on PA0.

Table 5.

High density and medium+ density STM8L15x pin description (continued)

number

Pin name

Input

Output

Default alternate function

STM8L151C8T6 Datasheet(PDF) 36 Page - STMicroelectronics

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