Datasheet
DocID15962 Rev 13 33/131
STM8L151xx, STM8L152xx Pin description
56
--11F3
PD3/ TIM1_ETR/ 
LCD_SEG9
(2)
/
ADC1_IN19/TIM1_BKIN/
COMP1_INP/
RTC_CALIB
I/O
TT
(3)
X XXHSXXPort D3
Timer 1 - external trigger 
/ LCD segment 9 / 
ADC1_IN19 / Timer 1 
break input / RTC 
calibration / Comparator 
1 positive input
33 21 20 C1
PD4/TIM1_CH2 
/LCD_SEG18
(2)
/
ADC1_IN10/COMP1_INP
I/O
TT
(3)
X XXHSXXPort D4
Timer 1 - channel 2 / 
LCD segment 18 / 
ADC1_IN10/ 
Comparator 1 positive 
input
34 22 - -
PD5/TIM1_CH3 
/LCD_SEG19
(2)
/
ADC1_IN9/COMP1_INP
I/O
TT
(3)
X XXHSXXPort D5
Timer 1 - channel 3 / 
LCD segment 19 / 
ADC1_IN9/ Comparator 
1 positive input
35 23 - -
PD6/TIM1_BKIN 
/LCD_SEG20
(2)
/
ADC1_IN8/RTC_CALIB/
/VREFINT/
COMP1_INP
I/O
TT
(3)
X XXHSXXPort D6
Timer 1 - break input / 
LCD segment 20 / 
ADC1_IN8 / RTC 
calibration / Internal 
voltage reference output 
/ Comparator 1 positive 
input
36 24 - -
PD7/TIM1_CH1N 
/LCD_SEG21
(2)
/
ADC1_IN7/RTC_ALARM/
VREFINT/
COMP1_INP
I/O
TT
(3)
X XXHSXXPort D7
Timer 1 - inverted 
channel 1/ LCD segment 
21 / ADC1_IN7 / RTC 
alarm / Internal voltage 
reference output 
/Comparator 1 positive 
input
14 - - - PE0
(5)
/LCD_SEG1
(2)
I/O FT X XXHSXXPort E0 LCD segment 1
15 - - -
PE1/TIM1_CH2N 
/LCD_SEG2
(2)
I/O
TT
(3)
X XXHSXXPort E1
Timer 1 - inverted 
channel 2 / LCD 
segment 2
Table 5. Medium density STM8L15x pin description (continued)
Pin number
Pin name
Type
I/O level
Input Output
Main function
(after reset)
Default alternate 
function
LQFP48 and UFQFPN48
LQFP32 and UFQFPN32 
UFQFPN28
WLCSP28
floating
wpu
Ext. interrupt 
High sink/source
OD
PP










