STM32WBA62CGF6 datasheet(139/185 Pages) STMICROELECTRONICS

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DS14736 Rev 1

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STM32WBA6xxx

Electrical characteristics

169

5.3.16

I/O current injection characteristics

As a general rule, 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 normal product

operation. However, in order to give an indication of the robustness of the microcontroller if

abnormal injection accidentally happens, some susceptibility tests are performed on a

sample basis during device 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 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, such as an ADC error above a certain

limit (higher than 5 LSB ET), out of conventional limits of induced leakage current on

adjacent pins (out of the -5 µA/0 µA range) or other functional failure (for example reset

occurrence or oscillator frequency deviation).

The characterization results are given in Table 74. The negative/positive induced leakage

current is caused by the negative/positive injection.

5.3.17

I/O port characteristics

General input/output characteristics

The parameters given in Table 75 are derived from tests performed at ambient temperature

and under the supply voltage conditions summarized in Table 30. All I/Os are designed as

CMOS- and TTL-compliant.

Note:

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

hardware settings and low-power consumption”.

1. Evaluated by characterization, not tested in production, unless otherwise specified.

Table 74. I/O current injection susceptibility(1)

1. Evaluated by characterization, not tested in production, unless otherwise specified.

Symbol

Description

Functional susceptibility

Unit

Negative injection

Positive injection

IINJ

Injected current on all pins

N/A

Table 75. I/O static characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIL

I/O input

low level voltage

1.58 V ≤ VDD ≤ 3.6 V,

1.08 V ≤ VDDIO2 ≤ 3.6 V

0.3 x VDD

VIH

I/O input

high level voltage

0.7 x VDD

Vhys(1) Input hysteresis

250

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