DESCRIPTION

The HCS200 from Microchip Technology Inc. is a code hopping encoder designed primarily for Remote Key less Entry (RKE) systems. The device utilizes the KEELOQ? code hopping technology, incorporating high security, a small package outline and low cost. The HCS200 is a perfect replacement of fixed code devices in unidirectional remote keyless entry systems and access control systems.

FEATURES

Security

? Programmable 28-bit serial number

? Programmable 64-bit crypt key

? Each transmission is unique

? 66-bit transmission code length

? 32-bit hopping code

? 28-bit serial number, 4-bit button status, low battery indicator transmitted

? Crypt keys are read protected

Operating

? 3.5–13.0V operation

? Three button inputs - seven functions available

? Selectable baud rate

? Automatic code word completion

? Low battery signal transmitted to receiver

? Non-volatile synchronization data

Other

? Easy to use programming interface

? On-chip EEPROM

? On-chip oscillator and timing components

? Button inputs have internal pull-down resistors

? Low external component cost

Typical Applications

The HCS200 is ideal for Remote Keyless Entry (RKE) applications. These applications include:

? Fixed code replacement

? Automotive RKE systems

? Automotive alarm systems

? Automotive immobilizers

? Gate and garage door openers

? Identity tokens

? Burglar alarm systems