DocID17659 Rev 10
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STM32L151x6/8/B, STM32L152x6/8/B
Pin descriptions
46
69 43 C6 C12 31
PA10
I/O
FT
PA10
USART1_RX/LCD_COM2
70 44 C8 B12 32
PA11
I/O
FT
PA11
USART1_CTS/USB_DM/SPI1_MISO
71 45 B8 A12 33
PA12
I/O
FT
PA12
USART1_RTS/USB_DP/SPI1_MOSI
72 46 A8 A11 34
PA13
I/O
FT
JTMS/
SWDAT
-
73
-
-
C11
-
PH2
I/O
FT
PH2
-
74 47 D5 F11
35
V
SS_2
S
-
V
SS_2
-
75 48 E5 G11 36
V
DD_2
S
-
V
DD_2
-
76 49 A7 A10 37
PA14
I/O
FT
JTCK
/SWCLK
-
77 50 A6
A9
38
PA15
I/O
FT
JTDI
TIM2_CH1_ETR/PA15/SPI1_NSS/
LCD_SEG17
78 51 B7 B11
-
PC10
I/O
FT
PC10
USART3_TX/LCD_SEG28/LCD_SEG40/
LCD_COM4
79 52 B6 C10
-
PC11
I/O
FT
PC11
USART3_RX/LCD_SEG29/LCD_SEG41/
LCD_COM5
80 53 C5 B10
-
PC12
I/O
FT
PC12
USART3_CK/LCD_SEG30/LCD_SEG42/
LCD_COM6
81
-
-
C9
-
PD0
I/O
FT
PD0
SPI2_NSS/TIM9_CH1
82
-
-
B9
-
PD1
I/O
FT
PD1
SPI2_SCK
83 54 B5
C8
-
PD2
I/O
FT
PD2
TIM3_ETR/LCD_SEG31/LCD_SEG43/
LCD_COM7
84
-
-
B8
-
PD3
I/O
FT
PD3
USART2_CTS/SPI2_MISO
85
-
-
B7
-
PD4
I/O
FT
PD4
USART2_RTS/SPI2_MOSI
86
-
-
A6
-
PD5
I/O
FT
PD5
USART2_TX
87
-
-
B6
-
PD6
I/O
FT
PD6
USART2_RX
88
-
-
A5
-
PD7
I/O
FT
PD7
USART2_CK/TIM9_CH2
89 55 A5
A8
39
PB3
I/O
FT
JTDO
TIM2_CH2/PB3/SPI1_SCK/COMP2_INM/
LCD_SEG7
90 56 A4
A7
40
PB4
I/O
FT
NJTRST
TIM3_CH1/PB4/SPI1_MISO/COMP2_INP/
LCD_SEG8
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