MCHPATSHA204A-SSHDA-T
Overview
The ATSHA204A-SSHDA-T is a high-security authentication device from Microchip's CryptoAuthentication family. It features a hardware-based SHA-256 accelerator and 664 bytes of secure EEPROM for protected key storage. This 8-SOIC chip provides a robust defense against hardware cloning and unauthorized firmware modifications in embedded systems.
Why Choose This Part
Hardware-based security provides superior protection over software-only implementations by isolating cryptographic keys from the host processor's memory. The device features ultra-low power consumption with a sleep current of only 0.15 uA and supports a wide operating voltage range from 2V to 5.5V. Its integrated tamper-detection mechanisms for voltage and temperature further harden the system against physical attacks.
Applications
Key Specifications
Getting Started
Engineers can evaluate this part using the Microchip ATCA-XPRO-S8LP development board or the CryptoAuthentication Starter Kit. Firmware integration is facilitated by the CryptoAuthLib library, which provides a standardized API for I2C communication and cryptographic commands. For initial prototyping, ensure the 8-SOIC footprint is correctly mapped to a 1.27mm pitch header.
