STM8L051F3 datasheet(25/96 Pages) STMICROELECTRONICS

25 / 96 page

DS9178 Rev 4

25/96

STM8L051F3

Pin description

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.

4.1

System configuration options

As shown in Table 4: STM8L051F3 pin description, some alternate functions can be

remapped on different I/O ports by programming one of the two remapping registers

described in the “Routing interface (RI) and system configuration controller” section in the

STM8L050J3, STM8L051F3, STM8L052C6, STM8L052R8 MCUs and STM8L151/L152,

STM8L162, STM8AL31, STM8AL3L lines reference manual (RM0031).

PC6/OSC32_OUT/[SPI_SCK](2)

/[USART_RX]/[TIM2_CH2]

I/O -

X XX HS X

Port

LSE oscillator output / [SPI clock] /

[USART receive]/

Timer 2 -channel 2

PD0/TIM3_CH2/[ADC1_TRIG](2

)/ADC1_IN22

I/O -

X XX HS X

Port

Timer 3 - channel 2 /

[ADC1_Trigger] / ADC1_IN22

8VDD / VDDA / VREF+

S-

Digital supply voltage /

ADC1 positive voltage reference

7VSS / VREF- / VSSA

Ground voltage / ADC1 negative voltage

reference / Analog ground voltage

PA0(5)/[USART_CK](2)/

SWIM/BEEP/IR_TIM (6)

I/O -

X X X

(6)

Port

[USART1 synchronous clock](2) /

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 STM8L051/L052 Value Line, STM8L151/L152, STM8L162, STM8AL31, STM8AL3L

MCU lines reference manual (RM0031).

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

duplication of the function).

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

4. In the open-drain output column, ‘T’ defines a true open-drain I/O (P-buffer and protection diode to VDD are not

implemented).

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

6. High Sink LED driver capability available on PA0.

Table 4. STM8L051F3 pin description (continued)

n°

Pin name

Input

Output

Default alternate function

STM8L051F3 Datasheet(PDF) 25 Page - STMicroelectronics

STM8L051F3 Datasheet(HTML) 25 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96

Datasheet Download

Link URL