STM32L433CCI7 datasheet(61/227 Pages) STMICROELECTRONICS

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DS11449 Rev 7

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STM32L433xx

Pinouts and pin description

Note:

FT_a and FT_fa pins can be connected to analog peripherals inputs. When analog

peripheral is not connected to this FT_a or FT_fa pins (analog switch from GPIO to

peripheral is not closed, for example ADC not uses given pin as ADC input), then GPIO can

accept VDD + 3.6 V (5 V tolerant I/O). However, once the I/O input is connected to the

analog peripheral (for example ADC selects as input channel from this pin), the parasitic

diode from this I/O pin to VDDA and/or VREF+ does not allow to use higher voltage on given

I/O pin than VDDA or VREF+ and pin is no more 5 V-tolerant I/O.

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

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

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.

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