Datasheet
DocID027100 Rev 4 43/149
STM32L072xx Pin descriptions
56
Table 15. 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
Table 16. STM32L072xxx pin definition
Pin number
Pin name
(function
after reset)
Pin type
I/O structure
Note
Alternate functions Additional functions
LQFP32
UFQFPN32
(1)
LQFP48
LQFP64
UFBGA64/TFBGA64
WLCSP49
LQFP100
UFBG100
- - - - - - 1 B2 PE2 I/O FT - TIM3_ETR -
- - - - - - 2 A1 PE3 I/O FT - TIM22_CH1, TIM3_CH1 -
- - - - - - 3 B1 PE4 I/O FT - TIM22_CH2, TIM3_CH2 -
- - - - - - 4 C2 PE5 I/O FT - TIM21_CH1, TIM3_CH3 -
- - - - - - 5 D2 PE6 I/O FT - TIM21_CH2, TIM3_CH4 RTC_TAMP3/WKUP3
1 - 1 1 B2 B6 6 E2 VDD S - - -
- - 2 2 A2 B7 7 C1 PC13 I/O FT - -
RTC_TAMP1/RTC_TS/
RTC_OUT/WKUP2
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.