HCS412 Datasheet (Microchip Technology) - Code Hopping Encoder and Transponder

HCS412, Code Hopping Encoder and Transponder

The HCS412 combines patented K EELOQ® code hopping tech nology with bi-di rectional transponder challenge-and-response security into a single chip solution for logical and physical access control.

When used as a code hopping encoder, the HCS412 is ideally suited to keyless entry systems; vehi cle an

HCS412 Features

* Security

* Programmable 64-bit encoder crypt key Two 64-bit IFF keys Keys are read protected 32-bit bi-directional challenge and response using one of two possible keys 69-bit transmission length

* 32-bit hopping code,

* 37-bit nonencry