ST72344S2 datasheet(214/247 Pages) STMICROELECTRONICS

214 / 247 page

Electrical characteristics

ST72344xx, ST2345xx

214/247

Doc ID 12321 Rev 6

13.8.2

EMI (electromagnetic interference)

Based on a simple application running on the product (toggling 2 LEDs through the I/O

ports), the product is monitored in terms of emission. This emission test is in line with the

norm SAE J 1752/3 which specifies the board and the loading of each pin.

13.8.3

Absolute maximum ratings (electrical sensitivity)

Based on two different tests (ESD and LU) using specific measurement methods, the

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

For more details, refer to the application note AN1181.

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 pin). Human body

model can be simulated. This test conforms to the JESD22-A114A/A115A standard.

Static latch-up (LU)

Two complementary static tests are required on 6 parts to assess the latch-up performance.

●

A supply overvoltage (applied to each power supply pin)

●

A current injection (applied to each input, output and configurable I/O pin) performed on

each sample.

This test conforms to the EIA/JESD 78 IC latch-up standard. For more details, refer to the

application note AN1181.

Table 104.

EMI emissions(1)

Data based on characterization results, not tested in production.

Symbol

Parameter

Conditions

Monitored

frequency band

Max vs. [fOSC/fCPU]

Unit

8/4 MHz

16/8 MHz

SEMI

Peak level

VDD=5V, TA=+25°C,

SO20 package,

conforming to

SAE J 1752/3

0.1 MHz to 30 MHz

TBD

dBµV

30 MHz to 130 MHz

TBD

130 MHz to 1 GHz

TBD

SAE EMI Level

TBD

Table 105.

ESD absolute maximum ratings

Symbol

Ratings

Conditions

Maximum value(1)

Data based on characterization results, not tested in production.

Unit

VESD(HBM)

Electrostatic discharge voltage

(human body model)

TA = +25 °C

>2000

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