Pin descriptions
STM32L151x6/8/B, STM32L152x6/8/B
38/129
DocID17659 Rev 10
46
-
-
M12
-
PE15
I/O
FT
PE15
SPI1_MOSI
47 29 G7 L10
21
PB10
I/O
FT
PB10
I2C2_SCL/USART3_TX/TIM2_CH3/
LCD_SEG10
48 30 H7 L11
22
PB11
I/O
FT
PB11
I2C2_SDA/USART3_RX/TIM2_CH4/LCD_SE
G11
49 31 D6 F12 23
V
SS_1
S
-
V
SS_1
-
50 32 E6 G12 24
V
DD_1
S
-
V
DD_1
-
51 33 H8 L12
25
PB12
I/O
FT
PB12
SPI2_NSS/I2C2_SMBA/USART3_CK/
LCD_SEG12/ADC_IN18/COMP1_INP/
TIM10_CH1
52 34 G8 K12 26
PB13
I/O
FT
PB13
SPI2_SCK/USART3_CTS/LCD_SEG13/
ADC_IN19/COMP1_INP/TIM9_CH1
53 35 F8 K11 27
PB14
I/O
FT
PB14
SPI2_MISO/USART3_RTS/LCD_SEG14/
ADC_IN20/COMP1_INP/TIM9_CH2
54 36 F7 K10 28
PB15
I/O
FT
PB15
SPI2_MOSI/LCD_SEG15/
ADC_IN21/COMP1_INP/TIM11_CH1/
RTC_REFIN
55
-
-
K9
-
PD8
I/O
FT
PD8
USART3_TX/LCD_SEG28
56
-
-
K8
-
PD9
I/O
FT
PD9
USART3_RX/LCD_SEG29
57
-
-
J12
-
PD10
I/O
FT
PD10
USART3_CK/LCD_SEG30
58
-
-
J11
-
PD11
I/O
FT
PD11
USART3_CTS/LCD_SEG31
59
-
-
J10
-
PD12
I/O
FT
PD12
TIM4_CH1/USART3_RTS/LCD_SEG32
60
-
-
H12
-
PD13
I/O
FT
PD13
TIM4_CH2/LCD_SEG33
61
-
-
H11
-
PD14
I/O
FT
PD14
TIM4_CH3/LCD_SEG34
62
-
-
H10
-
PD15
I/O
FT
PD15
TIM4_CH4/LCD_SEG35
63 37 F6 E12
-
PC6
I/O
FT
PC6
TIM3_CH1/LCD_SEG24
64 38 E7 E11
-
PC7
I/O
FT
PC7
TIM3_CH2/LCD_SEG25
65 39 E8 E10
-
PC8
I/O
FT
PC8
TIM3_CH3/LCD_SEG26
66 40 D8 D12
-
PC9
I/O
FT
PC9
TIM3_CH4/LCD_SEG27
67 41 D7 D11 29
PA8
I/O
FT
PA8
USART1_CK/MCO/LCD_COM0
68 42 C7 D10 30
PA9
I/O
FT
PA9
USART1_TX/LCD_COM1
Table 8. STM32L15xx6/8/B pin definitions (continued)
Pins
Pin name
P
in ty
pe
(1)
I/O str
u
ctu
re
Main
function
(2)
(after reset)
Alternate functions
LQ
FP1
00
LQ
FP6
4
TFBGA64
UFBGA1
00
LQ
FP4
8 or
UF
QF
PN48