STM32MP151F datasheet(160/253 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32MP151C/F

160/253

DS12501 Rev 3

6.3.16

I/O current injection characteristics

As a general rule, a 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) should be avoided during the normal

product operation. However, in order to give an indication of the robustness of the device in

cases when an abnormal injection accidentally happens, susceptibility tests are performed

on a sample basis during the device characterization.

Functional susceptibility to I/O current injection

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

current into the I/O pins programmed in floating input mode. While current is injected into

the I/O pin, one at a time, the device is 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 of induced leakage current on adjacent pins (out

of –5 µA/+0 µA range), or other functional failure (for example reset, oscillator frequency

deviation).

The following tables are the compilation of the SIC1/SIC2 and functional ESD results.

Negative induced A negative induced leakage current is caused by negative injection and

positive induced leakage current by positive injection.

6.3.17

I/O port characteristics

General input/output characteristics

Unless otherwise specified, the parameters given in Table 50: I/O static characteristics are

derived from tests performed under the conditions summarized in Table 13: General

operating conditions. All I/Os are CMOS and TTL compliant.

Table 48. Electrical sensitivities

Symbol

Parameter

Conditions

Class

Static latchup class

TA = +25 °C conforming to JESD78

II level A

Table 49. I/O current injection susceptibility(1)

Symbol

Description

Negative

injection

Positive

injection

Unit

IINJ

ANA0, ANA1, PA4, PA5

PG2, PG3, PG4, PH2

N/A

All other FTxx I/Os

N/A

1. Guaranteed by characterization

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