HCS515T-I/SL

Specialized ICS Overview

The HCS515T-I/SL is a KEELOQ code hopping decoder manufactured by Microchip Technology, designed for secure Remote Keyless Entry (RKE) systems. It operates within a voltage range of 4.5V to 5.5V and features an internal oscillator with automatic bit rate detection. The device includes encrypted storage for the manufacturer’s code and up to seven encoder decryption keys in internal EEPROM. It utilizes a synchronous serial interface for communication with host controllers and supports normal and secure learning mechanisms.

Specialized ICS Feature Summary

• Encrypted storage of manufacturer’s code and up to seven encoder decryption keys
• Internal oscillator with auto bit rate detection for wide transmitter data rate compensation
• Synchronous serial interface for microcontroller integration or stand-alone operation
• 1 Kbit user EEPROM for application-specific data storage

Specialized ICS Applications

• Automotive remote entry systems
• Automotive alarm systems
• Gate and garage openers
• Electronic door locks
• Identity tokens

Specialized ICS Procurement Notes

Verify that the ordering suffix 'T-I/SL' corresponds to the SOIC-14 Tape & Reel package variant. Confirm the industrial temperature grade (-40°C to +85°C) matches system requirements. Ensure compatibility with the specific KEELOQ encoder configuration, including PWM modulation format and synchronization counter parameters.

Specialized ICS Selection Notes

Select this component for unidirectional remote access control systems requiring high security against code grabbing. It is suitable for applications needing up to seven learned transmitters. Ensure the host system provides a 4.5V–5.5V supply and supports the required synchronous serial protocol for command execution and data retrieval.

Specialized ICS Part Context

The HCS515 belongs to the KEELOQ product family, utilizing patented code hopping technology to enhance security. It serves as a dedicated decoder solution that can function independently or alongside a microcontroller. The device simplifies implementation by handling encryption, decryption, and synchronization logic internally.

Specialized ICS Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.