ATSHA204A-MAHCZ-T

The Microchip ATSHA204A is a full turnkey security device. It includes a 4.5Kb EEPROM divided into 16 slots. This array can be used for storage of keys, miscellaneous read/write, read-only, password or secret data, and consumption tracking. Access to the various sections of memory can be restricted in a variety of ways and then the configuration locked to prevent changes.Access to the chip is through a standard I²C interface at speeds up to 1Mb/sec. The chip also supports a single-wire interface that can reduce the number of GPIOs required on the system processor and/or reduce the number of pins on connectors. It is compatible with most UART or serial I/O controllers. System integration is eased with a wide supply voltage range and an ultra-low sleep current of less than 100nA.

• 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)
• 4.5Kb 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
  • 1MHz I2 C Interface
• 2.0V to 5.5V Supply Voltage Range
• 1.8V to 5.5V Communications Voltage Range
• <150nA 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, 8-pad XDFN,