STM32F732IE datasheet(142/226 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F732xx STM32F733xx

142/226

DS11854 Rev 6

6.3.17

EMC characteristics

Susceptibility tests are performed on a sample basis during device characterization.

Functional EMS (electromagnetic susceptibility)

While a simple application is executed on the device (toggling 2 LEDs through I/O ports).

the device is stressed by two electromagnetic events until a failure occurs. The failure is

indicated by the LEDs:

•

Electrostatic discharge (ESD) (positive and negative) is applied to all device pins until

a functional disturbance occurs. This test is compliant with the IEC 61000-4-2 standard.

•

FTB: A burst of fast transient voltage (positive and negative) is applied to VDD and VSS

through a 100 pF capacitor, until a functional disturbance occurs. This test is compliant

with the IEC 61000-4-4 standard.

A device reset allows normal operations to be resumed.

The test results are given in Table 56. They are based on the EMS levels and classes

defined in application note AN1709.

As a consequence, it is recommended to add a serial resistor (1 kΩ) located as close as

possible to the MCU to the pins exposed to noise (connected to tracks longer than 50 mm

on PCB).

tRET

Data retention

1 kcycle(3) at TA = 85 °C

Years

1 kcycle(3) at TA = 105 °C

10 kcycles(3) at TA = 55 °C

1. Tj can not go above 125°C (current consumption limitation).

2. Guaranteed by characterization results.

3. Cycling performed over the whole temperature range.

Table 55. Flash memory endurance and data retention (continued)

Symbol

Parameter

Conditions(1)

Value

Unit

Min(2)

Table 56. EMS characteristics

Symbol

Parameter

Conditions

Level/

Class

VFESD

Voltage limits to be applied on any I/O

pin to induce a functional disturbance

VDD = 3.3 V, TA = +25 °C,

fHCLK = 216 MHz,

conforms to IEC 61000-4-2

VEFTB

Fast transient voltage burst limits to be

applied through 100 pF on VDD and VSS

pins to induce a functional disturbance

VDD = 3.3 V, TA =+25 °C,

fHCLK = 216 MHz,

conforms to IEC 61000-4-2

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