Microchip Technology HCS300-I/P

Description
The HCS300 is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. It 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
The HCS300 is ideal for Remote Keyless Entry (RKE) applications, including:
Automotive RKE systems
Automotive alarm systems
Automotive immobilizers
Gate and garage door openers
Identity tokens
Burglar alarm systems