Datasheet
DS10690 Rev 6 39/144
STM32L071xx Pin descriptions
53
Figure 10. STM32L071xx UFQFPN32 pinout
1. The above figure shows the package top view.
2. PA11 and PA12 input/output (greyed out pins) are supplied by VDDIO2.
MSv35461V3
32
31 30 29 28 27 26 25
24
23
22
20
19
18
17
8
910111213
14 15 16
1
2
3
4
5
6
7
PA3
PA4
PA5
PA6
PA7
PB0
PB1
VSS
VDDIO2
PA13
PA12
PA11
PA10
PA9
PA8
NRST
VDDA
PA0
PA1
PA2
VDD
VSS
BOOT0
PB7
PB6
PB5
PB4
PA14
PC14-OSC32_IN
PC15-OSC32_OUT
VDD
21
VSS
VSSA
Table 14. Legend/abbreviations used in the pinout table
Name Abbreviation Definition
Pin name
Unless otherwise specified in brackets below the pin name, the pin function during
and after reset is the same as the actual pin name
Pin type
S Supply pin
I Input only pin
I/O Input / output pin
I/O structure
FT 5 V tolerant I/O
FTf 5 V tolerant I/O, FM+ capable
TC Standard 3.3V I/O
B Dedicated BOOT0 pin
RST Bidirectional reset pin with embedded weak pull-up resistor
Notes
Unless otherwise specified by a note, all I/Os are set as floating inputs during and
after reset.
Pin functions
Alternate
functions
Functions selected through GPIOx_AFR registers
Additional
functions
Functions directly selected/enabled through peripheral registers
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