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The HCS300/P is a KEELOQ® code hopping encoder manufactured by Microchip Technology. Below are its specifications, descriptions, and features:

Specifications

• Manufacturer: Microchip Technology
• Series: KEELOQ®
• Package: 8-Pin PDIP (Plastic Dual In-Line Package)
• Operating Voltage: 2.0V to 6.3V
• Operating Temperature Range: -40°C to +125°C
• Frequency Range: Up to 433 MHz (RF applications)
• Encryption: Proprietary KEELOQ® hopping code technology
• Transmission Method: RF or IR (Infrared)
• EEPROM Memory: 64-bit serial EEPROM for secure key storage
• Low Power Consumption: Suitable for battery-operated devices
• Compliance: Meets FCC and other regulatory standards

Descriptions

The HCS300/P is a secure encoder IC designed for remote keyless entry (RKE) systems, garage door openers, and other wireless security applications. It incorporates Microchip’s KEELOQ® hopping code technology, which ensures high security by generating a unique transmission code each time the button is pressed.

The device includes an internal EEPROM for storing encryption keys and configuration data, making it resistant to code grabbing and replay attacks. It operates at a wide voltage range, making it suitable for battery-powered devices.

Features

• KEELOQ® Encryption: Provides secure, code-hopping transmission.
• 64-Bit EEPROM: Stores encryption keys and system parameters.
• Low Voltage Operation: Works from 2.0V to 6.3V.
• Wide Temperature Range: -40°C to +125°C for harsh environments.
• Button Inputs: Supports multiple button inputs for different functions.
• Transmission Flexibility: Compatible with RF (315/433 MHz) or IR applications.
• Battery Monitoring: Includes a low-battery detection feature.
• High Security: Resistant to code replay and scanning attacks.
• Compact Package: 8-Pin PDIP for easy integration.

The HCS300/P is widely used in automotive, industrial, and consumer security applications requiring reliable and secure wireless communication.