STM32H533CE datasheet(130/231 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32H533xx

130/231

DS14539 Rev 1

5.3.13

I/O current injection characteristics

As a general rule, avoid current injection to the I/O pins, due to external voltage below VSS

or above VDD (for standard, 3.3 V-capable I/O pins) during the normal product operation. To

give an indication of the device robustness when an abnormal injection accidentally

happens, susceptibility tests are performed on a sample basis during the characterization.

Functional susceptibility to I/O current injection

While a simple application is executed, the device is stressed by injecting current into the

I/O pins (one at the time) programmed in floating input mode, and checked for functional

failures. The failure is indicated by an out of range parameter: ADC error above a certain

limit (higher than 5 LSB TUE), out of conventional limits (-5 / +0 µA range) of induced

leakage current on adjacent pins, or other functional failures (such as reset, oscillator

frequency deviation).

Table 56 shows I/Os current injection susceptibility data. Negative/positive induced leakage

currents are caused, respectively, by negative/positive injection.

5.3.14

I/O port characteristics

General input/output characteristics

Unless otherwise specified, the parameters given in Table 57 are derived from tests

performed under the conditions summarized in Table 20. All I/Os are CMOS and TTL

compliant (except for BOOT0).

Note:

For information on GPIO configuration, refer to AN4899 “STM32 GPIO configuration for

hardware settings and low-power consumption”, available on www.st.com.

Table 55. Electrical sensitivities

Symbol

Parameter

Conditions

Class

Static latchup class

TJ = 130 °C, conforming to JESD78

II level A

Table 56. I/O current injection susceptibility(1)

1. Evaluated by characterization - Not tested in production.

Symbol

Description

Functional susceptibility

Unit

Negative

injection

Positive

injection

IINJ

Injected current on pins PC14, PC15, PB6, PB8,

PE8

Injected current on PB5, PB8, PC5, PD10, PE4,

PF6, PH1

Injected current on PA4, PA5, PB2, PD8

N/A

Injected current on all other pins

N/A

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