Product description
KEELOQ Code Hopping Encoder
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
Other
* Easy-to-use programming interface
* On-chip EEPROM
* On-chip oscillator and timing components
* Button inputs have internal pull-down resistors
* Current limiting on LED output
* Low external component cost
Applications
* Automotive RKE systems
* Automotive alarm systems
* Automotive immobilizers
* Gate and garage door openers * Identity tokens
* Burglar alarm systems
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
Other
* Easy-to-use programming interface
* On-chip EEPROM
* On-chip oscillator and timing components
* Button inputs have internal pull-down resistors
* Current limiting on LED output
* Low external component cost
Applications
* Automotive RKE systems
* Automotive alarm systems
* Automotive immobilizers
* Gate and garage door openers * Identity tokens
* Burglar alarm systems