Datasheet

Pin description STM8L15xx8, STM8L15xR6
28/134 DocID17943 Rev 6
Table 4. Legend/abbreviation
Type I= input, O = output, S = power supply
Level
FT: Five-volt tolerant
Output HS = high sink/source (20 mA)
Port and control
configuration
Input float = floating, wpu = weak pull-up
Output T = true open drain, OD = open drain, PP = push pull
Reset state
Bold X (pin state after reset release).
Unless otherwise specified, the pin state is the same during the reset phase (i.e.
“under reset”) and after internal reset release (i.e. at reset state).
Table 5. High density and medium+ density STM8L15x pin description
Pin
number
Pin name
Type
I/O level
Input Output
Main function
(after reset)
Default alternate function
LQFP80 LQFP64
UFQFPN48 and LQFP48
floating
wpu
Ext. interrupt
High sink/source
OD
PP
1 - - PH0/LCD SEG 36
(3)
I/O FT
(5)
X XXHSXXPort H0 LCD segment 36
2 - - PH1/LCD SEG 37
(3)
I/O FT
(5)
X XXHSXXPort H1 LCD segment 37
3 - - PH2/LCD SEG 38
(3)
I/O FT
(5)
X XXHSXXPort H2 LCD segment 38
4 - - PH3/LCD SEG 39
(3)
I/O FT
(5)
X XXHSXXPort H3 LCD segment 39
6 2 2 NRST/PA1
(1)
I/O X HS X Reset PA1
733
PA2/OSC_IN/
[USART1_TX]
(2)
/
[SPI1_MISO]
(2)
I/O X XXHSXXPort A2
HSE oscillator input /
[USART1 transmit] / [SPI1
master in- slave out] /
844
PA3/OSC_OUT/
[USART1_RX]
(2)
/[
SPI1_MOSI]
(2)
I/O X XXHSXXPort A3
HSE oscillator output /
[USART1 receive]/ [SPI1
master out/slave in]/
955
PA4/TIM2_BKIN/
[TIM2_ETR]
(2)
LCD_COM0
(3)
/ADC1_IN2
[COMP1_INP]
I/O FT
(5)
X XXHSXXPort A4
Timer 2 - break input /
/[Timer 2 - trigger] /
LCD COM 0 / ADC1 input 2/
[Comparator 1 positive input]
10 6 6
PA5/TIM3_BKIN/
[TIM3_ETR]
(2)
/
LCD_COM1
(3)
/ADC1_IN1/
[COMP1_INP]
I/O FT
(5)
X XXHSXXPort A5
Timer 3 - break input / [Timer
3 - trigger] / LCD_COM 1 /
ADC1 input 1/ [Comparator
1 positive input]