Pin descriptions
STM32L151xC STM32L152xC
42/135
DocID022799 Rev 10
L8
41
-
-
-
PE10
I/O
TC
PE10
TIM2_CH2
ADC_IN25/
COMP1_INP
M9
42
-
-
-
PE11
I/O
FT
PE11
TIM2_CH3
VLCDRAIL2
L9
43
-
-
-
PE12
I/O
FT
PE12
TIM2_CH4/SPI1_NSS
VLCDRAIL3
M10 44
-
-
-
PE13
I/O
FT
PE13
SPI1_SCK
-
M11 45
-
-
-
PE14
I/O
FT
PE14
SPI1_MISO
-
M12 46
-
-
-
PE15
I/O
FT
PE15
SPI1_MOSI
-
L10
47 29 J2 21
PB10
I/O
FT
PB10
TIM2_CH3/I2C2_SCL/
USART3_TX/
LCD_SEG10
-
L11
48 30 H2 22
PB11
I/O
FT
PB11
TIM2_CH4/I2C2_SDA/
USART3_RX/
LCD_SEG11
-
-
-
-
H5
-
V
SS
S
-
V
SS
-
-
F12
49 31 J1 23
V
SS_1
S
-
V
SS_1
-
-
G12 50 32 H1 24
V
DD_1
S
-
V
DD_1
-
-
L12
51 33 G2 25
PB12
I/O
FT
PB12
TIM10_CH1
/I2C2_SMBA/
SPI2_NSS/I2S2_WS/
USART3_CK/
LCD_SEG12
ADC_IN18/
COMP1_INP/
VLCDRAIL2
K12
52 34 G1 26
PB13
I/O
FT
PB13
TIM9_CH1/SPI2_SCK/
I2S2_CK/
USART3_CTS/
LCD_SEG13
ADC_IN19/
COMP1_INP
K11
53 35 F3 27
PB14
I/O
FT
PB14
TIM9_CH2/SPI2_MISO/
USART3_RTS/
LCD_SEG14
ADC_IN20/
COMP1_INP
K10
54 36 F2 28
PB15
I/O
FT
PB15
TIM11_CH1/SPI2_MOSI
/I2S2_SD/LCD_SEG15
ADC_IN21/
COMP1_INP/
RTC_REFIN
Table 9. STM32L151xC and STM32L152xC pin definitions (continued)
Pins
Pin name
Pin type
(1)
I / O S
tru
ctu
re
Main
function
(2)
(after
reset)
Pin functions
UFBGA
100
LQ
FP10
0
LQ
FP6
4
WL
CS
P63
LQF
P
48
or
UF
QF
PN48
Alternate functions
Additional functions