The following content is an automatically extracted verbatim text
from the original manufacturer datasheet and is provided for reference purposes only.
View original datasheet text
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.