The Microchip ATECC508A integrates ECDH (Elliptic Curve Diffie Hellman) security protocol an ultra-secure method to provide key agreement for encryption/decryption, along with ECDSA (Elliptic Curve Digital Signature Algorithm) sign-verify authentication for the Internet of Things (IoT) market including home automation, industrial networking, accessory and consumable authentication, medical, mobile and more.

The ATECC508A is a secure element from the Microchip CryptoAuthentication portfolio with advanced Elliptic Curve Cryptography (ECC) capabilities. With ECDH and ECDSA being built right in, this device is ideal for the rapidly growing IoT market by easily supplying the full range of security such as confidentiality, data integrity, and authentication to systems with MCU or MPUs running encryption/decryption algorithms (i.e. AES).Similar to all Microchip CryptoAuthentication products, the new ATECC508A employs ultra-secure hardware-based cryptographic key storage and cryptographic countermeasures which are more robust than software-based key storage.

The device is compatible with any microprocessor (MPU) or microcontroller (MCU) including Microchipand Microchip AVR/ARM MCUs or MPUs.As with all CryptoAuthentication devices, the ATECCC508A delivers extremely low-power consumption, requires only a single GPIO over a wide voltage range, and has a tiny form factor making it ideal for a variety of applications that require longer battery life and flexible form factors.

  Cryptographic accelerator with Secure Hardware-based Key Storage

  Performs High-Speed Public Key (PKI) Algorithms

  NIST Standard P256 Elliptic Curve Support

  SHA-256 Hash Algorithm with HMAC Option

  Host and Client Operations

  256-bit Key Length

  Storage for up to 16 Keys

  Two high-endurance monotonic counters

  Guaranteed Unique 72-bit Serial Number

  Internal High-quality FIPS Random Number Generator (RNG)

  10Kb EEPROM Memory for Keys, Certificates, and Data

  Storage for up to 16 Keys

  Multiple Options for Consumption Logging and One Time Write Information

  Intrusion Latch for External Tamper Switch or Power-on Chip Enablement

  Single Wire or I2C Interface

  2.0V to 5.5V Supply Voltage Range

  1.8V to 5.5V IO levels

  <150nA Sleep Current

  8-pad UDFN,8-lead SOIC, and 3-lead CONTACT Packages