DocID026119 Rev 5
43/133
STM32L151xC/C-A STM32L152xC/C-A
Pin descriptions
54
97
E11 64 38 E2
PC7
I/O
FT
PC7
TIM3_CH2/I2S3_MCK/
LCD_SEG25
-
98
E10 65 39 E3
PC8
I/O
FT
PC8
TIM3_CH3/LCD_SEG26
-
99 D12 66 40 D1
PC9
I/O
FT
PC9
TIM3_CH4/LCD_SEG27
-
100 D11 67 41 E4
PA8
I/O
FT
PA8
USART1_CK/MCO/
LCD_COM0
-
101 D10 68 42 D2
PA9
I/O
FT
PA9
USART1_TX / LCD_COM1
-
102 C12 69 43 D3
PA10
I/O
FT
PA10
USART1_RX / LCD_COM2
-
103 B12 70 44 C1
PA11
I/O
FT
PA11
USART1_CTS/ SPI1_MISO
USB_DM
104 A12 71 45 C2
PA12
I/O
FT
PA12
USART1_RTS/ SPI1_MOSI
USB_DP
105 A11 72 46 D4
PA13
I/O
FT
JTMS-
SWDIO
JTMS-SWDIO
-
106 C11 73
-
-
PH2
I/O
FT
PH2
-
-
107 F11
74 47 B1
V
SS_2
S
-
V
SS_2
-
-
108 G11 75 48 A1
V
DD_2
S
-
V
DD_2
-
-
109 A10 76 49 B2
PA14
I/O
FT
JTCK-
SWCLK
JTCK-SWCLK
-
110
A9
77 50 C3
PA15
I/O
FT
JTDI
TIM2_CH1_ETR/
SPI1_NSS/SPI3_NSS/
I2S3_WS/LCD_SEG17/
JTDI
-
111 B11 78 51 A2
PC10
I/O
FT
PC10
SPI3_SCK/I2S3_CK/
USART3_TX/
LCD_SEG28/LCD_SEG40/
LCD_COM4
-
112 C10 79 52 B3
PC11
I/O
FT
PC11
SPI3_MISO/USART3_RX/
LCD_SEG29/LCD_SEG41/
LCD_COM5
-
113 B10 80 53 C4
PC12
I/O
FT
PC12
SPI3_MOSI/I2S3_SD/
USART3_CK/LCD_SEG30/
LCD_SEG42/
LCD_COM6
-
Table 8. STM32L151xC/C-A and STM32L152xC/C-A pin definitions (continued)
Pins
Pin name
Pin T
ype
(1
)
I / O stru
ctu
re
Main
function
(2)
(after reset)
Pin functions
LQ
FP14
4
UFBGA
132
LQ
FP10
0
LQ
FP6
4
WLC
S
P6
4
Alternate functions
Additional
functions