ST short range coupler: CRX14

AN2399

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ST short range coupler: CRX14

The CRX14 is a short-range contactless chip coupler compliant with the ISO14443 type B

standard. It interfaces with the host CPU that manages the communications protocol in both

directions through the industry-standard I²C serial bus. The coupler is equipped with France

Telecom’s proprietary anti-clone function and anti-collision mechanism. The CRX14 is

supplied in SO16N packages.

A complete solution combining the CRX14 coupler and SRxx transponders operates in the

short range and ensures a total compatibility in terms of memory tag protocol access. In

addition, the combination of the CRX14 and SRIX512 or SRIX4K memories guarantees a

high level of system security for short-range and low-cost applications. Optimized for

interoperability, these products can also work independently, with any ISO-standard chips.

The CR14 is based on the CRX14, excluding the support of France Telecom’s proprietary

anti-clone function.