Pin descriptions
STM32L151x6/8/B, STM32L152x6/8/B
36/129
DocID17659 Rev 10
Table 8. STM32L15xx6/8/B pin definitions
Pins
Pin name
Pin type
(1
)
I/O
structu
re
Main
function
(2)
(after reset)
Alternate functions
LQ
FP1
00
LQ
FP64
TFBG
A
64
UFBGA10
0
LQ
F
P
4
8 or UF
QF
PN48
1
-
-
B2
-
PE2
I/O
FT
PE2
TRACECLK/LCD_SEG38/TIM3_ETR
2
-
-
A1
-
PE3
I/O
FT
PE3
TRACED0/LCD_SEG39/TIM3_CH1
3
-
-
B1
-
PE4
I/O
FT
PE4
TRACED1/TIM3_CH2
4
-
-
C2
-
PE5
I/O
FT
PE5
TRACED2/TIM9_CH1
5
-
-
D2
-
PE6-WKUP3 I/O
FT
PE6
TRACED3/WKUP3/TIM9_CH2
6
1 B2
E2
1
V
LCD
(3)
S
V
LCD
-
7
2 A2
C1
2
PC13-
WKUP2
I/O
FT
PC13
RTC_TAMP1/RTC_TS/RTC_OUT/WKUP2
8
3 A1
D1
3
PC14-
OSC32_IN
(4)
I/O
TC
PC14
OSC32_IN
9
4 B1
E1
4
PC15-
OSC32_OUT
I/O
TC
PC15
OSC32_OUT
10
-
-
F2
-
V
SS_5
S
-
V
SS_5
-
11
-
-
G2
-
V
DD_5
S
-
V
DD_5
-
12
5 C1
F1
5
PH0-
OSC_IN
(5)
I/O
TC
PH0
OSC_IN
13
6 D1
G1
6
PH1-
OSC_OUT
I/O
TC
PH1
OSC_OUT
14
7 E1
H2
7
NRST
I/O RST
NRST
-
15
8 E3
H1
-
PC0
I/O
FT
PC0
ADC_IN10/LCD_SEG18/COMP1_INP
16
9 E2
J2
-
PC1
I/O
FT
PC1
ADC_IN11/LCD_SEG19/COMP1_INP
17 10 F2
J3
-
PC2
I/O
FT
PC2
ADC_IN12/LCD_SEG20/COMP1_INP
18 11 -
(6)
K2
-
PC3
I/O
TC
PC3
ADC_IN13/LCD_SEG21/COMP1_INP
19 12 F1
J1
8
V
SSA
S
-
V
SSA
-
20
-
-
K1
-
V
REF-
S
-
V
REF-
-
21
-
G1
L1
-
V
REF+
S
-
V
REF+
-
22 13 H1
M1
9
V
DDA
S
-
V
DDA
-
23 14 G2
L2
10
PA0-WKUP1 I/O
FT
PA0
WKUP1/USART2_CTS/ADC_IN0/
TIM2_CH1_ETR/COMP1_INP