ECC204 Secure Authentication IC

Microchip's ECC204 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. Consider implementing an ATECC608 in the user's host to perform the ECDSA P256 verify function of the signature the disposable or accessory would return. Users can leverage that same ATECC608 for mutual authentication to an IoT cloud platform.

For Qi 1.3 wireless charging in consumer applications, refer to the ECC204 TrustFLEX WPC.

Features

• 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 a 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 SWI with external capacitor
• 400 kHz fast mode I²C interface
• 130 nA nominal sleep current
• Extended industrial temperature of -40℃ to +105℃ ambient operating range