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Microchip ECC204 Secure Authentication IC

A key member of the CryptoAuthentication™ family

The ECC204 by Microchip is a member of the CryptoAuthentication™ product family. The device is targeted for disposable and ecosystem control applications and is intended to be used as a companion device with Microchip or other vendors’ microcontrollers.

Microchip recently expanded its secure authentication device portfolio with six new products in its CryptoAuthentication™ and CryptoAutomotive™ IC families that meet Common Criteria Joint Interpretation Library (JIL) High rated secure key storage and support certified algorithms that comply with the Federal Information Processing Standard (FIPS).

This portfolio of secure authentication devices lowers the barrier to entry and enables developers of products for new segments and applications to implement trusted authentication to prevent counterfeiting, improve quality control and safeguard the user experience. As counterfeits become prevalent across many industries, the need to implement embedded trust in many designs is critical.


  • Cryptographic Authentication Device with Secure Hardware-Based Key Storage
  • Hardware Support for the Asymmetric Sign
  • ECDSA: FIPS186-4 Elliptic Curve Digital Signature
    • NIST standard P-256 elliptic curve support
  • Hardware Support for SHA-256 and HMAC
    • Internal Asymmetric Key Generation
  • Internal High-Quality NIST SP 800-90A/B/C Random Number Generator (RNG)
  • Joint Interpretation Laboratory (JIL) Score for Resistance to Attackers– level JIL High
  • Evaluated to the standard “Jil-Application-Of-Attack-Potential-To-Smartcards-V3.1”
  • Achieved through tamper-resistant countermeasures to resist environmental, non-invasive and invasive
  • Active shield to protect against invasive attacks
  • Internal memory encryption and scrambling
  • Low and high supply voltage tampers


  • Low and high temperature tampers
  • FIPS 140-3 Compliance Mode Configuration Option
  • Field-Programmable EEPROM
  • Single ECC private key
  • One device certificate and one CA signer certificate
  • Single symmetric secret key
  • 64-byte user memory
  • 40-Year Data Retention at +55℃
  • Monotonic Counter with the Maximum Count Value of 10,000
  • Unique 72-bit Serial Number
  • Two Interface Options Available
  • 125 kbps Pulse-Width Modulated (PWM) single-wire serial interface (SWI)
  • Parasitic power support for single-wire interface with External Capacitor
  • 400 kHz Fast mode I2C interface


Use Cases

  • Ecosystem Control Through asymmetric authentication / PKI
  • Disposables and Accessory Authentication
  • Disposable applications with limited use through programmable usage counter
  • Symmetric Authentication through use of an HMAC Key