ECC204-MAVCZ-T

Specialized ICS Overview

The Microchip Technology ECC204-MAVCZ-T is a CryptoAuthentication™ series security IC designed for ecosystem control and disposable applications. It provides hardware-based key storage for one ECC private key, two certificates, one symmetric key, and 64 bytes of user data. The device supports ECDSA (FIPS186-4 P-256), SHA-256, and HMAC operations with internal asymmetric key generation and NIST SP 800-90A/B/C certified TRNG. It features a unique 72-bit serial number and a monotonic counter up to 10,000. Electrical specifications include an operating voltage range of 1.65V to 5.5V, sleep current of 130nA typ, and extended industrial temperature range from -40°C to +105°C.

Specialized ICS Feature Summary

• Hardware-accelerated ECDSA P-256 signing and SHA-256/HMAC computation
• Secure field-programmable EEPROM storing ECC keys, certificates, and user data
• NIST SP 800-90A/B/C compliant True Random Number Generator (TRNG)
• JIL High resistance score against environmental, non-invasive, and invasive attacks
• Dual interface options: 400kHz I2C or 125kbps PWM Single-Wire Interface (SWI)

Specialized ICS Applications

• Ecosystem control through asymmetric authentication / PKI
• Disposable and accessory authentication with usage limiting
• Symmetric authentication using HMAC keys

Specialized ICS Procurement Notes

Verify the specific ordering suffix 'MAVCZ' against official Microchip documentation to confirm package type and interface configuration. Ensure compliance requirements such as FIPS 140-3 mode are addressed during the provisioning phase via the Trust Platform. Confirm that the selected variant matches the required physical interface (I2C vs SWI) for the target host system design.

Specialized ICS Selection Notes

Select this component when hardware-level protection for cryptographic keys is required alongside low power consumption. The choice between I2C and SWI interfaces depends on GPIO availability and pin count constraints in the host design. Consider the Trust Platform variants if pre-provisioned credentials or specific use-case configurations like WPC Qi authentication are needed instead of generic blank devices.

Specialized ICS Part Context

The ECC204 belongs to the CryptoAuthentication™ family, positioned as a companion device for microcontrollers in security-critical applications. It complements other Microchip security solutions by providing dedicated hardware acceleration for elliptic curve cryptography, reducing the computational load on the main processor while enhancing overall system security posture.

Specialized ICS Replacement Considerations

Publicly confirmed substitutes include ATSHA204A for symmetric-only applications and ATECC608 for enhanced elliptic curve capabilities. Verify interface compatibility and memory layout differences before substitution.