DocID17659 Rev 10
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STM32L151x6/8/B, STM32L152x6/8/B
Pin descriptions
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Table 7. 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
TC
Standard 3.3 V 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