Hopping Decoder 8-Pin PDIP

The HCS301 from Microchip Technology Inc. is a code hopping encoder designed primarily for Remote Keyless Entry (RKE) systems. The device utilizes the KEELOQ code hopping technology, incorporating high security, a small package outline and low cost. The HCS301 is a perfect replacement of fixed code devices in unidirectional remote keyless entry systems and access control systems.

• 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
• 2.0–6.3V 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