UM0970 datasheet(19/30 Pages) STMICROELECTRONICS

19 / 30 page

Extension connection

UM0970

19/30

Doc ID 17693 Rev 2

Extension connection

Male headers P1, P2 and P3 can connect the STM8L-DISCOVERY to a standard

prototyping/wrapping board. All GPI/Os of STM8L152C6T6 are available on it.

P1, P2 and P3 can also be probed by an oscilloscope, logical analyzer or voltmeter.

Table 6.

P1 pinout

Pin number

(P1)

Pin number

(STM8L)

Board pin

name

Main

function

Alternate function

LCD (U5)

1+3V3

3.3 V board power

supplied or supply

external application when

USB connected

PA0

I/O

Port A0

PA0/[USART1_CK](3)/

SWIM/BEEP/

IR_TIM (7)

9/40

GND

Ground

PA1

I/O

Reset

NRST/PA1(1)

PA2

I/O

Port A2

PA2/OSC_IN/

[USART1_TX](3)/

[SPI1_MISO] (3)

PA3

I/O

Port A3

PA3/OSC_OUT/

[USART1 _RX](3)/

[SPI1_MOSI](3)

PA4

I/O

Port A4

PA4/TIM2_BKIN/

LCD_COM0(2)/

ADC1_IN2/

COMP1_INP

LCD_COM0

PA5

I/O

Port A5

PA5/TIM3_BKIN/

LCD_COM1(2)/

ADC1_IN1/

COMP1_INP

LCD_COM1

PA6

I/O

Port A6

PA6/[ADC1_TRIG](3)/

LCD_COM2(2)/

ADC1_IN0/

COMP1_INP

LCD_COM2

PA7

I/O

Port A7

PA7/

LCD_SEG0(2)(4)

LCD_SEG0

PE0

I/O

Port E0

PE0(4)/

LCD_SEG1(2)

LCD_SEG1

PE1

I/O

Port E1

PE1/TIM1_CH2N /

LCD_SEG2(2)

LCD_SEG2

PE2

I/O

Port E2

PE2/TIM1_CH3N /

LCD_SEG3(2)

LCD_SEG3

PE3

I/O

Port E3

PE3/LCD_SEG4(2)

LCD_SEG4

PE4

I/O

Port E4

PE4/LCD_SEG5(2)

LCD_SEG5

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