STM32U595AI datasheet(261/377 Pages) STMICROELECTRONICS

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DS13633 Rev 1

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STM32U59xxx

Electrical characteristics

343

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

respect the absolute maximum rating specified in Section 5.2: Absolute maximum ratings:

•

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 30: Current 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 30: Current 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 32. All I/Os are CMOS- and TTL-compliant (FT OR TT unless otherwise specified).

Table 85. Output voltage characteristics (all I/Os except FT_t I/Os in VBAT mode(1),

and FT_o I/Os)(2)(3)

Symbol

Parameter

Conditions

Min

Max

Unit

VOL

Output low-level voltage

CMOS port(4), |IIO| = 8 mA,

2.7 V ≤ VDDIOx ≤ 3.6 V

-0.4

VOH

Output high-level voltage

VDDIOx - 0.4

VOL(5)

Output low-level voltage

TTL port(4),|IIO| = 8 mA,

2.7 V ≤ VDDIOx ≤ 3.6 V

-0.4

VOH(5)

Output high-level voltage

2.4

VOL(5)

Output low-level voltage

All I/Os, |IIO| = 20 mA,

2.7 V ≤ VDDIOx ≤ 3.6 V

-1.3

VOH(5)

Output high-level voltage

VDDIOx - 1.3

VOL(5)

Output low-level voltage

|IIO| = 4 mA,

1.58 V ≤ VDDIOx ≤ 3.6 V

-0.4

VOH(5)

Output high-level voltage

VDDIOx - 0.4

VOL(5)

Output low-level voltage

|IIO| = 1 mA,

1.08 V ≤ VDDIOx <3.6 V

-0.4

VOH(5)

Output high-level voltage

VDDIOx - 0.4

VOLFM+(5)

Output low-level voltage for

a FT_f I/O pin in FM+ mode

|IIO| = 20 mA,

2.7 V ≤ VDDIOx ≤ 3.6 V

-0.4

|IIO| = 10 mA,

1.58 V ≤ VDDIOx ≤ 3.6 V

-0.4

|IIO| = 2 mA,

1.08 V ≤ VDDIOx < 3.6 V

-0.4

1. FT_t I/O characteristics are degraded only in VBAT mode (refer to Table 86).

2. The I/O structure options listed in this table can be a concatenation of options including the option explicitly listed. For

instance TT_a refers to any TT I/O with _a option. TT_xx refers to any TT I/O and FT_xx refers to any FT I/O.

3. The IIO current sourced or sunk by the device must always respect the absolute maximum rating specified in Table 30:

Current 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.

4. TTL and CMOS outputs are compatible with JEDEC standards JESD36 and JESD52.

5. Specified by design. Not tested in production.

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