Microchip Technology, Inc. Specialized ICs HCS320-I/SN

The HCS320-I/SN is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems, utilizing KEELOQ technology to enhance security against code grabbing and scanning. It features a programmable 28-bit serial number and a 64-bit encryption key, ensuring that each transmission is unique with a 66-bit transmission code length. The device operates within a voltage range of 3.5V to 13.0V and supports 16 selectable functions, making it versatile for various applications. The HCS320 includes an easy-to-use programming interface, on-chip EEPROM for storing configuration data, and an internal oscillator, which reduces the need for external components. It is suitable for automotive RKE systems, alarm systems, immobilizers, and garage door openers. The device also provides battery low signals and has built-in protections for encryption keys, enhancing its reliability in security applications. The HCS320 is available in PDIP and SOIC package types, making it adaptable for different design requirements.