company blog about Microchip ATSHA204A-SSHDA-B High-Security Hardware Authentication IC

Microchip ATSHA204A-SSHDA-B High-Security Hardware Authentication IC

Product Description Of ATSHA204A-SSHDA-B
ATSHA204A-SSHDA-B device includes an Electrically Erasable Programmable Read-Only Memory (EEPROM) array that can be used for key storage, miscellaneous read/write data, read-only, secret data,consumption logging and security configuration. Access to the various sections of memory can be restricted in a variety of ways and the configuration can then be locked to prevent changes.

Specification Of ATSHA204A-SSHDA-B
Data Bus Width:72 bit
Supply Voltage - Max:5.5 V
Supply Voltage - Min:2 V
Minimum Operating Temperature:- 40 C
Maximum Operating Temperature:+ 85 C
Moisture Sensitive:Yes
Operating Supply Voltage:2 V to 5.5 V
Unit Weight:540 mg

Features Of ATSHA204A-SSHDA-B
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

Applicatons Of ATSHA204A-SSHDA-B
Secure Download and Boot
Ecosystem Control
Anti-cloning
Message Security

AC Timing Diagram — All I/O Interfaces

AC Timing Diagram — Single-Wire Interface