ECC204-TFLXAUTHR-HV

Specialized ICS Overview

The Microchip Technology ECC204-TFLXAUTHR-HV is a CryptoAuthentication™ IC designed for hardware-based security key storage. It supports ECDSA P-256 signatures, SHA-256, and HMAC operations with internal key generation and NIST SP 800-90A/B/C compliant RNG. The device features protected EEPROM storing one ECC private key, two certificates, one symmetric key, and 64 bytes of user data. It offers I²C (400kHz) and SWI (125kbps) interfaces, operates from -40°C to +105°C, and includes a monotonic counter and 72-bit unique serial number.

Specialized ICS Feature Summary

• Hardware-accelerated ECDSA P-256, SHA-256, and HMAC support
• Protected EEPROM: 1 ECC key, 2 certs, 1 symmetric key, 64 bytes user data
• Dual interface options: 400kHz I²C or 125kbps PWM SWI
• Internal NIST-compliant RNG and monotonic counter (max 10,000 counts)

Specialized ICS Applications

• Ecosystem control and accessory authentication
• One-time use identity verification
• IoT cloud mutual authentication
• Qi® certified wireless charging security subsystems

Specialized ICS Procurement Notes

This specific part number indicates a provisioned configuration under the TrustFLEX platform. Verify that the pre-configured cryptographic keys and certificates match the intended application requirements before integration. Confirm the 'Bulk' packaging format aligns with assembly line capabilities. Ensure compatibility with the host microcontroller's I²C or SWI interface constraints.

Specialized ICS Selection Notes

Select this component when hardware-level protection against physical attacks is required. The TrustFLEX variant simplifies development by providing pre-configured keys, reducing setup complexity compared to blank devices. Consider the extended industrial temperature range (-40°C to +105°C) for harsh environments. Evaluate the 130nA sleep current for battery-powered applications requiring long-term standby operation.

Specialized ICS Part Context

The ECC204 belongs to Microchip’s CryptoAuthentication™ family, specifically optimized for cost-sensitive, high-volume applications. The 'TFLX' suffix denotes inclusion in the TrustFLEX program, which offers pre-provisioned security credentials to accelerate time-to-market. This series complements other TrustFLEX devices like the SHA10x series, providing a scalable solution for securing connected devices without complex key management infrastructure.

Specialized ICS Replacement Considerations

Direct replacements must support identical ECC P-256 functionality and compatible interfaces. Generic EEPROMs cannot substitute this device due to the lack of cryptographic processing capabilities. Verify that any alternative maintains JIL high-rating resistance and FIPS 140-3 compliance if regulatory adherence is mandatory.