STM32L4S5AI datasheet(181/275 Pages) STMICROELECTRONICS

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STM32L4S5xx, STM32L4S7xx and STM32L4S9xx

Electrical characteristics

250

In the user application, the number of I/O pins which can drive current must be limited to

respect the absolute maximum rating specified in Section 6.2:

•

The sum of the currents sourced by all the I/Os on VDDIOx, plus the maximum

consumption of the MCU sourced on VDD, cannot exceed the absolute maximum rating

ΣIVDD (see Table 19: Voltage characteristics).

•

The sum of the currents sunk by all the I/Os on VSS, plus the maximum consumption of

the MCU sunk on VSS, cannot exceed the absolute maximum rating ΣIVSS (see

Table 19: Voltage characteristics).

Output voltage levels

Unless otherwise specified, the parameters given in the table below are derived from tests

performed under the ambient temperature and supply voltage conditions summarized in

Table 22: General operating conditions. All I/Os are CMOS- and TTL-compliant (FT OR TT

unless otherwise specified).

Table 68. Output voltage characteristics(1)

1. The IIO current sourced or sunk by the device must always respect the absolute maximum rating specified

in Table 19: Voltage characteristics, and the sum of the currents sourced or sunk by all the I/Os (I/O ports

and control pins) must always respect the absolute maximum ratings ΣIIO.

Symbol

Parameter

Conditions

Min

Max

Unit

VOL

Output low level voltage for

an I/O pin

CMOS port(2)

|IIO| = 8 mA

VDDIOx ≥ 2.7 V

-0.4

VOH

Output high level voltage for

an I/O pin

VDDIOx-0.4

VOL(3)

Output low level voltage for

an I/O pin

TTL port(2)

|IIO| = 8 mA

VDDIOx ≥ 2.7 V

-0.4

VOH(3)

Output high level voltage for

an I/O pin

2.4

VOL(3)

Output low level voltage for

an I/O pin

|IIO| = 20 mA

VDDIOx ≥ 2.7 V

-1.3

VOH(3)

Output high level voltage for

an I/O pin

VDDIOx-1.3

VOL(3)

Output low level voltage for

an I/O pin

|IIO| = 4 mA

VDDIOx ≥ 1.62 V

-0.45

VOH(3)

Output high level voltage for

an I/O pin

VDDIOx-0.45

VOL(3)

Output low level voltage for

an I/O pin

|IIO| = 2 mA

1.62 V ≥ VDDIOx ≥

1.08 V

0.35 ₓ

VDDIOx

VOH(3)

Output high level voltage for

an I/O pin

0.65ₓVDDIOx

VOLFM+

(3)

Output low level voltage for

an FT I/O pin in FM+ mode

(FT I/O with "f" option)

|IIO| = 20 mA

VDDIOx ≥ 2.7 V

-0.4

|IIO| = 10 mA

VDDIOx ≥ 1.62 V

-0.4

|IIO| = 2 mA

1.62 V ≥ VDDIOx ≥

1.08 V

-0.4

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