ECC204-TFLXAUTHS

Specialized ICS Overview

The Microchip ECC204-TFLXAUTHS is a CryptoAuthentication™ series secure element designed for disposable and ecosystem control applications. It provides hardware-based key storage supporting ECDSA (P-256), SHA-256, and HMAC operations. The device features an internal TRNG compliant with NIST SP 800-90A/B/C standards and JIL High security rating. It includes field-programmable EEPROM for one private key, two certificates, one symmetric key, and 64 bytes of user data. Electrical specifications include a supply voltage range of 1.65V to 5.5V, extended industrial temperature operation from -40°C to +105°C, and nominal sleep current of 130nA.

Specialized ICS Feature Summary

• Hardware-accelerated asymmetric signing using ECDSA with NIST P-256 curve support
• Secure storage for single ECC private key, CA signer certificate, device certificate, symmetric key, and 64-byte user memory
• Internal True Random Number Generator (TRNG) certified under NIST SP 800-90A/B/C standards
• JIL High resistance to attackers with active shield and tamper-resistant countermeasures

Specialized ICS Applications

• Ecosystem control through asymmetric authentication and PKI
• Disposable and accessory authentication with usage limiting via monotonic counter
• Symmetric authentication utilizing HMAC keys

Specialized ICS Procurement Notes

This part number represents a TrustFLEX variant, indicating it is pre-configured and provisioned with customer-unique credentials via the Secure Exchange Package. Verification should confirm that the specific ordering suffix corresponds to the intended Trust Platform provisioning flow and package type before integration into production systems.

Specialized ICS Selection Notes

Select this component when hardware-based protection against physical attacks and logical data extraction is required for low-to-mid volume deployments. The TrustFLEX configuration allows for customized credential injection without full custom silicon development. Ensure host microcontrollers support either the 400kHz I2C or 100kbps SWI interface protocols defined in the electrical characteristics.

Specialized ICS Part Context

The ECC204 belongs to the CryptoAuthentication™ family, targeting cost-sensitive mass-market applications. The TFLXAUTHS suffix identifies the 8-pin SOIC package version of the TrustFLEX AUTH variant, specifically optimized for disposable and accessory authentication use cases within the broader ECC20x product line.

Specialized ICS Replacement Considerations

Publicly confirmed substitutes are not available in the provided documentation. For generic ECC204 equivalents, consider standard variants such as ECC204-MAVDA-T (UDFN) or ECC204-SSVDA-T (SOIC), noting that these lack the specific TrustFLEX provisioning.