Datasheet

Pin description STM8L151x2, STM8L151x3
28/112 Doc ID 018780 Rev 4
28 17 16 11 14
PB4
(3)
/SPI1_NSS/
ADC1_IN14
I/O X XXHSXXPort B4
SPI master/slave select
/ ADC1_IN14
29 18 17 12 15
PB5/SPI_SCK/
/ADC1_IN13
I/O X XXHSXXPort B5
[SPI clock] /
ADC1_IN13
30 19 18 13 16
PB6/SPI1_MOSI/
ADC1_IN12
I/O X XXHSXXPort B6
SPI master out/
slave in / ADC1_IN12
31 20 19 14 17
PB7/SPI1_MISO/
ADC1_IN11
I/O X XXHSXXPort B7
SPI1 master in- slave
out/
ADC1_IN11
37 25 21 15 18 PC0/I2C_SDA I/O FT X XT
(5)
Port C0 I2C data
38 26 22 16 19 PC1/I2C_SCL I/O FT X XT
(3)
Port C1 I2C clock
41 27 23 - -
PC2/USART_RX/ADC
1_IN6
I/O X XXHSXXPort C2
USART receive /
ADC1_IN6
42 28 24 - -
PC3/USART_TX/
ADC1_IN5
I/O X XXHSXXPort C3
USART transmit /
ADC1_IN5
43 29 25 17 20
PC4/USART_CK]/
I2C_SMB/CCO/
ADC1_IN4
I/O X XXHSXXPort C4
USART synchronous
clock / I2C1_SMB /
Configurable clock
output / ADC1_IN4
44 30 26 18 1
PC5/OSC32_IN
/[SPI1_NSS]
(2)
/
[USART_TX]
(2)
/
TIM2_CH1
(6)
I/O X XXHSXXPort C5
LSE oscillator input /
[SPI master/slave
select] / [USART
transmit]/
Timer 2 -channel 1
(6)
45 31 27 19 2
PC6/OSC32_OUT/
[SPI_SCK]
(2)
/
[USART_RX]
(2)
/
TIM2_CH2
(6)
I/O X XXHSXXPort C6
LSE oscillator output /
[SPI clock] / [USART
receive]/
Timer 2 -channel 2
(6)
46----PC7/ADC1_IN3 I/O X XXHSXXPort C7 ADC1_IN3
209869
PD0/TIM3_CH2/
[ADC1_TRIG]
(2)
/
ADC1_IN22
I/O X XXHSXXPort D0
Timer 3 - channel 2 /
[ADC1_Trigger] /
ADC1_IN22
21 10 9 - -
PD1/TIM3_ETR/
ADC1_IN21
I/O X XXHSXXPort D1
Timer 3 - external
trigger / ADC1_IN21
22 11 10 - -
PD2/
ADC1_IN20
I/O X XXHSXXPort D2 ADC1_IN20
Table 4. Low density STM8L15xxx pin description (continued)
Pin number
Pin name
Type
I/O level
Input Output
Main function
(after reset)
Default alternate
function
LQFP48
UFQFPN32 UFQFPN28 UFQFPN20
TSSOP20
floating
wpu
Ext. interrupt
High sink/source
OD
PP