STM32H523VCU6 datasheet(126/228 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32H523xx

126/228

DS14540 Rev 1

5.3.12

Absolute maximum ratings (electrical sensitivity)

Based on three different tests (ESD, LU) using specific measurement methods, the device is

stressed in order to determine its performance in terms of electrical sensitivity.

Electrostatic discharge (ESD)

Electrostatic discharges (a positive pulse followed by a negative one) are applied to the pins

of each sample according to each pin combination. This test conforms to the

ANSI/ESDA/JEDEC JS-001 and ANSI/ESDA/JEDEC JS-002 standards.

Static latchup

Two complementary static tests are required on six parts to assess the latchup

performance:

•

A supply overvoltage is applied to each power supply pin

•

A current injection is applied to each input, output and configurable I/O pin

These tests are compliant with JESD78 IC latchup standard.

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

Table 53. ESD absolute maximum ratings

Symbol

Ratings

Conditions

Packages

Class

Maximum

value(1)

Unit

VESD(HBM)

Electrostatic discharge

voltage (human body

model)

TA = 25 °C conforming to

ANSI/ESDA/JEDEC JS-001

All packages

1000(2)

VESD(CDM)

Electrostatic discharge

voltage (charge device

model)

TA = +25 °C conforming to

ANSI/ESDA/JEDEC JS-002

All packages

C2a

500

1. Evaluated by characterization - Not tested in production.

2. The electrostatic discharge is 2000 V for all pins, except for NRST, PB13 and PB14 for which the test fails at 2000 V and

passes at 1400 V.

Table 54. Electrical sensitivities

Symbol

Parameter

Conditions

Class

Static latchup class

TJ = 130 °C, conforming to JESD78

II level A

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