ATSHA204 Authentication Chip Breakout

Description

The ATMEL ATSHA204 is an optimized authentication chip that includes a 4.5kb EEPROM. This array can be used to store codes, passwords, secret data and more! You can adjust access to various parts of the memory of this chip, blocking access in many different ways, and even block the configuration itself, to prevent changes. Each ATSHA204 comes with a unique and guaranteed 72-bit serial number. Using the cryptographic protocol supported by the chip or remote servers, they can prove that the serial number is authentic and not a copy. The ATSHA204 can generate high quality random numbers and use them for any purpose. Features: Supply Voltage: 2.0-5.5V Integrated capability for both host and client operations Superior SHA-256 hash algorithm, HMAC option Best-in-class, 256-bit key length; storage for up to 16 keys Guaranteed unique 72-bit serial number Internal, high-quality Random Number Generator (RNG) 4.5-Kbit EEPROM for keys and data 512 OTP (One Time Programmable) bits for fixed information Sleep Current: <150nA Documents: Schematic Eagle Files Datasheet Example Arduino Library (github repo)