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Next-Generation NFC Chip from STMicroelectronics Eases Certification of Digital Car-Key Systems

ST25R3920B is first-to-market NFC Forum certified IC for CCC applications.

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By: DAVID SAVASTANO

Contributing Editor, Coatings World and Ink World, Coatings World and Ink World Magazine

STMicroelectronics has introduced the latest generation of its automotive-qualified NFC reader ICs for Car Connectivity Consortium (CCC) digital-key applications, with enhanced features that increase performance and ease product certification.

The ST25R3920B is used in car-door and center-console locations for keyless entry and starting, as well as Qi wireless-charging control and smartphone pairing. The chip comes with ST’s unique Heartbeat algorithm for NFC card protection on Wireless Power Consortium (WPC) applications, which can differentiate between an NFC card and a smartphone in card-emulation mode. This ensures phones can charge while cards stay protected.

The ST25R3920B has output power up to 1.6W combined with best-in-class sensitivity to maximize interaction distance when installed in a location such as a car door handle, where space constraints call for a small-size antenna. The output power is dynamically adjustable to comply with upper and lower limits expressed in NFC Forum and EMVCo specifications.

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