STM32U535NET6QTR datasheet(199/278 Pages) STMICROELECTRONICS

199 / 278 page

DS14217 Rev 1

199/278

STM32U535xx

Electrical characteristics

253

to prevent unrecoverable errors occurring. See application note Software techniques for

improving microcontrollers EMC performance (AN1015) for more details.

Electromagnetic Interference (EMI)

The electromagnetic field emitted by the device is monitored while a simple application is

executed (toggling two LEDs through the I/O ports). This emission test is compliant with

IEC 61967-2 standard that specifies the test board and the pin loading.

5.3.12

Electrical sensitivity characteristics

Based on three different tests (ESD, latch-up) 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 then a negative pulse separated by 1 second) are

applied to the pins of each sample according to each pin combination. The sample size

depends on the number of supply pins in the device (3 parts × (n+1) supply pins). This test

conforms to the ANSI/JEDEC standard.

Table 88. EMI characteristics for fHSE = 8 MHz and fHCLK = 160 MHz

Symbol Parameter

Conditions

Monitored frequency

band

Value

Unit

SEMI

Peak(1)

VDD = 3.6 V, TA = 25 °C,

LQFP100 package compliant

with IEC 61967-2

0.1 MHz to 30 MHz

dBμV

30 MHz to 130 MHz

130 MHz to 1 GHz

1 GHz to 2 GHz

Level(2)

0.1 MHz to 2 GHz

3.5

1. Refer to the EMI radiated test section of the application note EMC design guide for STM8, STM32 and Legacy MCUs

(AN1709).

2. Refer to the EMI level classification section of the application note EMC design guide for STM8, STM32 and Legacy MCUs

(AN1709).

Table 89. ESD absolute maximum ratings(1)

Symbol

Ratings

Conditions

Packages

Class

Max

value

Unit

VESD(HBM)

Electrostatic discharge

voltage (human body model)

TA = 25 °C, conforming to

ANSI/ESDA/JEDEC JS-001

All

VESD(CDM)

Electrostatic discharge

voltage (charge device model)

TA = 25 °C, conforming to

ANSI/ESDA/JEDEC JS-002

LQFP100

C2a

500

WLCSP72

1. Evaluated by characterization. Not tested in production.

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