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EMC DESIGN GUIDE FOR ST MICROCONTROLLERS

1 EMC DEFINITIONS

1.1 EMC

ElectroMagnetic Compatibility (EMC) is the capability of a system to work properly, undis-

turbed by the electromagnetic phenomena present in its normal environment, and not to

create electrical disturbances that would interfere with other equipment.

1.2 EMS

The ElectroMagnetic Susceptibility (EMS) level of a device is the resistance to electrical dis-

turbances and conducted electrical noise. ElectroStatic Discharge (ESD) and Fast Transient

Burst (FTB) tests determine the reliability level of a device operating in an undesirable electro-

magnetic environment.

1.3 EMI

The ElectroMagnetic Interference (EMI) is the level of conducted or radiated electrical noise

sourced by the equipment. Conducted emission propagates along a cable or any interconnec-

tion line. Radiated emission propagates through free space.

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