STR710FZ2 datasheet(48/78 Pages) STMICROELECTRONICS

48 / 78 page

Electrical parameters

STR71xF

48/78

Electro magnetic interference (EMI)

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.

Notes:

1. Not tested in production.

2. BGA and LQFP devices have similar EMI characteristics.

Absolute maximum ratings (electrical sensitivity)

Based on three different tests (ESD, LU and DLU) 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.

Electro-static discharge (ESD)

Electro-Static 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). Two models

can be simulated: Human Body Model and Machine Model. This test conforms to the

JESD22-A114A/A115A standard.

Table 25.

EMS data

Symbol

Parameter

Conditions

Level/

Class

VFESD

Voltage limits to be applied on any I/O pin

to induce a functional disturbance

V33=3.3 V, TA=+25°C, fMCLK=32 MHz

conforms to IEC 1000-4-2

VEFTB

Fast transient voltage burst limits to be

applied through 100pF on VDD and VSS

pins to induce a functional disturbance

V33=3.3 V, TA=+25°C, fMCLK=32 MHz

conforms to IEC 1000-4-4

Table 26.

EMI data

Symbol

Parameter

Conditions

Monitored

frequency band

Max vs.

[fOSC4M/fHCLK]

Unit

16/ 48

MHz

16/8

MHz

SEMI

Peak level

V33=3.3 V, TA=+25°C,

LQFP64 package

conforming to SAE J

1752/3

0.1 MHz to 30 MHz

µV

30 MHz to 130 MHz

130 MHz to 1 GHz

SAE EMI Level

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