DESCRIPTION

The HCS300 from Microchip Technology Inc. is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS300 utilizes the KEELOQ® code hopping technology, incorporating high security, a small package outline and low cost. The HCS300 is a perfect solution for unidirectional remote keyless entry systems and access control systems.

FEATURES

Security

• Programmable 28-bit serial number

• Programmable 64-bit encryption key

• Each transmission is unique

• 66-bit transmission code length

• 32-bit hopping code

• 28-bit serial number, 4-bit button code, 2-bit status

• Crypt keys are read protected

Operating

• 2.0V - 6.3V operation

• Four button inputs

• No additional circuitry required

• 15 functions available

• Selectable baud rate

• Automatic code word completion

• Low battery signal transmitted to receiver

• Non-volatile synchronization data

Typical Applications

The HCS300 is ideal for Remote Keyless Entry (RKE) applications. These applications include:

• Automotive RKE systems

• Automotive alarm systems

• Automotive immobilizers

• Gate and garage door openers

• Identity tokens

• Burglar alarm systems