STM8L052C6T6 Datasheet, PDF(27/102 Page) STMicroelectronics – Value Line, 8-bit ultralow power MCU, 32-KB Flash, 256-byte data EEPROM, RTC, LCD, timers, USART, I2C, SPI, ADC

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STM8L052C6T6 Datasheet, PDF (27/102 Pages) STMicroelectronics – Value Line, 8-bit ultralow power MCU, 32-KB Flash, 256-byte data EEPROM, RTC, LCD, timers, USART, I2C, SPI, ADC

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STM8L052C6

Pin description

Table 4.

Pin

number

Medium density value line STM8L05xxx pin description (continued)

Input

Output

Pin name

Default alternate function

48 PE7/LCD_SEG27

I/O TT(2) X X X HS X X Port E7 LCD segment 27

32 PF0/ADC1_IN24

I/O

X X X HS X X Port F0 ADC1_IN24

13 VLCD

S

LCD booster external capacitor

13 Reserved

10 VDD

S

11 VDDA

S

12 VREF+

S

9 VSS1/VSSA/VREF-

S

Reserved. Must be tied to VDD

Digital power supply

Analog supply voltage

ADC1 positive voltage reference

I/O ground / Analog ground voltage /

ADC1 negative voltage reference

39 VDD2

S

40 VSS2

S

1

PA0(6)/[USART1_CK](8)/

SWIM/BEEP/IR_TIM (7)

I/O

X

X(6)

X

HS

(7)

X

IOs supply voltage

IOs ground voltage

[USART1 synchronous

X

Port A0

clock](8) / 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. To be used as a general purpose pin (PA1), it can be

configured only as output open-drain or push-pull, not as a general purpose input. Refer to Section Configuring NRST/PA1

pin as general purpose output in the STM8L15x and STM8L16x reference manual (RM0031).

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

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

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

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

not implemented).

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

7. High Sink LED driver capability available on PA0.

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

aduplication of the function).

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.

Doc ID 023331 Rev 1

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