STM32L4S5AI datasheet(71/275 Pages) STMICROELECTRONICS

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STM32L4S5xx, STM32L4S7xx and STM32L4S9xx

Pinouts and pin description

116

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

Supply pin

Input only pin

I/O

Input / output pin

I/O structure

5 V tolerant I/O

3.6 V tolerant I/O

Dedicated BOOT0 pin

RST

Bidirectional reset pin with embedded weak pull-up resistor

Option for TT or FT I/Os

_f (1)

I/O, Fm+ capable

_l (2)

I/O, with LCD function supplied by VLCD

_u (3)

I/O, with USB function supplied by VDDUSB

_a (4)

I/O, with Analog switch function supplied by VDDA

_s (5)

I/O supplied only by VDDIO2

Notes

Unless otherwise specified by a note, all I/Os are set as analog inputs during and after reset.

functions

Alternate

functions

Functions selected through GPIOx_AFR registers

Additional

functions

Functions directly selected/enabled through peripheral registers

1. The related I/O structures in Table 15 are: FT_f, FT_fa, FT_fl, FT_fla.

2. The related I/O structures in Table 15 are: FT_l, FT_fl, FT_lu.

3. The related I/O structures in Table 15 are: FT_u, FT_lu.

4. The related I/O structures in Table 15 are: FT_a, FT_la, FT_fa, FT_fla, TT_a, TT_la.

5. The related I/O structures in Table 15 are: FT_s, FT_fs.

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