Benefits and Features
● ECC-256 Compute Engine
• FIPS 186 ECDSA P256 Signature and Verification
• ECDH Key Exchange with Authentication Prevents
Man-in-the-Middle Attacks
• ECDSA Authenticated R/W of Configurable Memory
● FIPS 180 SHA-256 Compute Engine
• HMAC
● SHA-256 OTP (One-Time Pad) Encrypted R/W of
Configurable Memory Through ECDH Established Key
● Two GPIO Pins with Optional Authentication Control
• Open-Drain, 4mA/0.4V
• Optional SHA-256 or ECDSA Authenticated On/Off
and State Read
• Optional ECDSA Certificate to Set On/Off after
Multiblock Hash for Secure Boot
● RNG with NIST SP 800-90B Compliant Entropy
Source with Function to Read Out
● Optional Chip Generated Pr/Pu Key Pairs for ECC
Operations
● 17-Bit One-Time Settable, Nonvolatile Decrement-
Only Counter with Authenticated Read
● 8Kbits of EEPROM for User Data, Keys, and Certificates
● Unique and Unalterable Factory Programmed 64-Bit
Identification Number (ROM ID)
• Optional Input Data Component to Crypto and Key
Operations
● I2C Communication Up to 1MHz
● Operating Range: 2.2V to 3.63V, -40°C to +85°C
● 6-Pin TDFN Package

Applications
● IoT Node Crypto-Protection
● Accessory and Peripheral Secure Authentication
● Secure Storage of Cryptographic Keys for a Host Controller
● Secure Boot or Download of Firmware and/or System
Parameters