ATSHA204A

ATSHA204A ATSHA204A Microchip CryptoAuthentication Data Sheet Features Crypto Element with Protected Hardware-Based Key Storage Secure Symmetric Authentication Device Host and Client Operations Superior SHA-256 Hash Algorithm with Message Authentication Code (MAC) and Hash-Based Message Authentication Code (HMAC) Options 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 kb EEPROM for Keys and Data 512 bit OTP (One Time Programmable) Bits for Fixed Information Multiple I/O Options – UART-compatible High-Speed, Single-Wire Interface – 1 MHz I2C Interface 2.0V to 5.5V Supply Voltage Range 1.8V to 5.5V Communications Voltage Range <150 nA Sleep Current Secure Download and Boot – Ecosystem Control – Message Security – Anti-Cloning 8-lead SOIC, 8-lead TSSOP (2), 3-lead SOT23, 8-pad UDFN and 3-lead CONTACT Packages Applications Secure Download and Boot Ecosystem Control Anti-cloning Message Security © 2018 Microchip Technology Inc. DS40002025A-page 1 Package Types Table 1. Pin Configuration Pin Name NC GND SDA SCL VCC Figure 1. Pinouts(1) 8-lead SOIC (Top View) NC NC NC GND 1 2 3 4 8 VCC 7 NC 6 SCL 5 SDA NC NC NC GND Function No Connect Ground Serial Data Serial Clock Input Power Supply 8-lead TSSOP(2) (Top View) 18 27 36 45 VCC NC SCL SDA 3-lead SOT (Top View) GND 2 3 1 VCC SDA 8-pad UDFN (Top View) NC NC NC GND 1 2 3 4 8...