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

130 nA Nominal Sleep Current
• Extended Industrial Temperature of -40℃ to +105℃ Ambient Operating Range

The 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. The ECC204 will perform an ECDSA sign (not verify) and a SHA256 HMAC operation.

Consider implementing an ATECC608 in your host to perform the ECDSA P256 verify function of the signature your disposable or accessory would return. You could leverage that same ATECC608 for mutual authentication to an IoT cloud platform

For a pre-configure ECC204 TrustFLEX, refer to ECC204-TFLXAUTH

For Qi 1.3 and Qi 2.0 wireless charging in consumer applications, refer to the ECC204 TrustFLEX WPC

For Qi 1.3 and Qi 2.0 wireless charging in Automotive applications, refer to the TA010.