HCS301-I/P Datasheet PDF - Microchip

●DESCRIPTION

●The HCS301 from Microchip Technology Inc. is a code hopping encoder designed for secure Remote Keyless

●Entry (RKE) systems. The HCS301 utilizes the KEELOQ® code hopping technology, which incorporates high security, a small package outline and low cost, to make this device a perfect solution for unidirectional remote keyless entrysystems 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

●• 34-bit fixed code (28-bit serial number, 4-bit button code, 2-bit status)

●• Encryption keys are read protected

●Operating

●• 3.5V - 13.0V operation

●• Four button inputs

●• No additional circuitry required

●• 15 functions available

●• Selectable baud rate

●• Automatic code word completion

●• Battery low signal transmitted to receiver

●• Battery low indication on LED

●• Non-volatile synchronization data

●Other

●• Functionally identical to HCS300

●• Easy-to-use programming interface

●• On-chip EEPROM

●• On-chip oscillator and timing components

●• Button inputs have internal pull-down resistors

●• Current limiting on LEDoutput

●• Low external component cost

●Typical Applications

●The HCS301 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