HCS300 Datasheet – Code Hopping Encoder ( PDF )

Part Number: HCS300

Function: Keetloq Code Hopping Encoder

Package: DIP, SOIC 8 Pin Type

Manufacturer: Microchip Technology


HCS300 datasheet



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 device is a perfect solution for unidirectional remote keyless entry systems and access control systems.

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


• Automotive RKE systems
• Automotive alarm systems
• Automotive immobilizers
• Gate and garage door openers

Other data sheets are available within the file:

HCS300P, HCS300SN, HCS300I/P, HCS300I/SN


HCS300 Datasheet PDF Download

HCS300 pdf