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ATECC608B

CryptoAuthentication™ Device Summary Data Sheet

Features

•Cryptographic Co-Processor with Secure Hardware-Based Key Storage:

–Protected storage for up to 16 keys, certificates or data

•Hardware Support for Asymmetric Sign, Verify, Key Agreement:

–ECDSA: FIPS186-3 Elliptic Curve Digital Signature

–ECDH: FIPS SP800-56A Elliptic Curve Diffie-Hellman

–NIST Standard P256 Elliptic Curve Support

•Hardware Support for Symmetric Algorithms:

–SHA-256 & HMAC Hash including off-chip context save/restore

–AES-128: Encrypt/Decrypt, Galois Field Multiply for GCM

•Networking Key Management Support:

–Turnkey PRF/HKDF calculation for TLS 1.2 & 1.3

–Ephemeral key generation and key agreement in SRAM

–Small message encryption with keys entirely protected

•Secure Boot Support:

–Full ECDSA code signature validation, optional stored digest/signature

–Optional communication key disablement prior to secure boot

–Encryption/Authentication for messages to prevent on-board attacks

•Internal High-Quality NIST SP 800-90A/B/C Random Number Generator (RNG)

•Two High-Endurance Monotonic Counters

•Unique 72-Bit Serial Number

•Two Interface Options Available:

–High-Speed Single Wire Interface with One GPIO Pin

–1 MHz Standard I2C Interface

•1.8V to 5.5V IO Levels, 2.0V to 5.5V Supply Voltage

•Two Temperature Ranges Available:

–Standard Industrial Temperature Range: -40 to +85℃ ℃

–Extended Industrial Temperature Range: -40 to +100℃ ℃

•<150 nA Sleep Current

•Packaging Options

–8-pad UDFN, 8-lead SOIC and 3-Lead Contact Package Options

–Die-on-Tape and Reel and WLCSP for Qualified Customers (Contact Microchip Sales)

Applications

•IoT network endpoint key management & exchange

•Encryption for small messages and PII data

•Secure Boot and Protected Download

•Ecosystem Control, Anti-cloning

This is a summary document. A

complete document is available under

NDA. For more information, please

contact your local Microchip sales

office.

© 2020 Microchip Technology Inc. Summary DatasheetDS40002239A-page 1

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