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The ATSHA204A-SSHDA-T is a high-security CryptoAuthentication™ device from Microchip Technology. It provides advanced hardware-based security for SHA-256 hash algorithm applications, including message authentication code (MAC) and hash-based message authentication code (HMAC). Housed in a standard SOIC-8 package, it is designed for easy integration into industrial, consumer, and automotive systems to prevent cloning and unauthorized hardware tampering.
Product Focus: This version utilizes the SOIC-8 footprint, making it ideal for systems where ease of assembly and high-reliability soldering are prioritized.
The ATSHA204A-SSHDA-T is an ideal solution for protecting intellectual property (IP) and ensuring brand integrity. It features a secure 4.5Kb EEPROM that can store keys, certificates, and non-volatile data, protected by sophisticated hardware-level anti-tamper mechanisms.
Unlike software-based security, the ATSHA204A executes the SHA-256 algorithm in a dedicated hardware zone, shielding sensitive keys from being read even if the host microcontroller is compromised. It supports a high-quality Random Number Generator (RNG) to ensure the uniqueness of every challenge-response session.
Microchip Technology Inc. is a leading provider of smart, connected, and secure embedded control solutions. Their hardware security portfolio, centered around the CryptoAuthentication™ brand, is the industry leader for root-of-trust implementations.
By providing low-cost, low-power, and easy-to-implement security ICs, Microchip enables developers to defend their systems against increasingly sophisticated cyber and physical threats.
Delivers ultra-secure message authentication that is immune to software-based eavesdropping and extraction.
Standard leaded package simplifies PCB design and is highly resilient to thermal and mechanical stress.
Protects up to 16 keys in an encrypted EEPROM zone that is physically shielded from probing.
Supports dual-interface options for maximum flexibility, requiring as few as one GPIO for operation.
The ATSHA204A-SSHDA-T is supplied in the widely used 8-lead SOIC (Small Outline Integrated Circuit) package.
The 8-lead SOIC pinout is optimized for standard I2C or Single-Wire communication.
| Manufacturer | Microchip Technology |
|---|---|
| Algorithm | SHA-256 |
| Secure Storage | 4.5 Kb EEPROM |
| Voltage Supply | 2.0V to 5.5V |
| Interface | I2C / Single-Wire |
| Package | SOIC-8 |
| Sleep Current | < 150 nA |
| Unique ID | 72-bit Serial Number |
Replacement for the ATSHA204A-SSHDA-T should prioritize pin-compatibility and interface logic.
Validating the authenticity of disposable probes and surgical attachments to ensure patient safety.
Protecting PLC firmware and preventing uncertified modules from entering industrial networks.
Anti-cloning for batteries, cables, and smart home peripherals.
Providing hardware root-of-trust for routers, switches, and edge computing gateways.
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