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