STM8AL3136 datasheet(34/124 Pages) STMICROELECTRONICS

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Pin description

STM8AL313x/4x/6x STM8AL3L4x/6x

34/124

DocID18474 Rev 7

Note:

The slope control of all GPIO pins, except true open drain pins, can be programmed. By

default, the slope control is limited to 2 MHz.

9 VLCD(2)

S-

LCD booster external capacitor

Reserved(8)

Reserved. Must be tied to VDD

VDD

- Digital power supply

VDDA

- Analog supply voltage

VREF+

S-

ADC1 and DAC positive voltage

reference

-8

8 VDD1/VDDA/VREF+

S-

Digital power supply / Analog

supply voltage / ADC1 positive

voltage reference

7 VSS1/VSSA/VREF-

S-

I/O ground / Analog ground

voltage / ADC1 negative voltage

reference

VDD2

- IOs supply voltage

VSS2

- IOs ground voltage

132

PA0(9)/[USART1_CK](4)/

SWIM/BEEP/IR_TIM (10)

I/O

X X(9) XHS(10) X

X Port A0

[USART1 synchro-

nous clock](4) / SWIM

input and output /

Beep output / Infrared

Timer output

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

configured only as output push-pull, not as output open drain or as a general purpose input. Refer to Section Configuring

NRST/PA1 pin as general purpose output in STM8L051/L052 Value Line, STM8L151/L152, STM8L162, STM8AL31,

STM8AL3L MCU lines reference manual (RM0031).

2. Available on STM8AL3Lxx devices only.

3. In the 3.6 V tolerant I/Os, protection diode to VDD is not implemented.

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

duplication of the function).

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

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

7. 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).

8. Available on STM8AL31xx devices only.

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

10. High sink LED driver capability available on PA0.

Table 5. Medium-density STM8AL313x/4x/6x and STM8AL3L4x/6x pin description (continued)

Pin number

Pin name

Input

Output

Default alternate

function

STM8AL3136 数据表(PDF) 34 Page - STMicroelectronics

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