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ATSHA204A-STUCZ-T Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
ATSHA204A-STUCZ-TMicrochip10000Yes

ATSH204A-STUCZ-T** is a cryptographic authentication device manufactured by **Microchip Technology**.

The ATSH204A-STUCZ-T is a cryptographic authentication device manufactured by Microchip Technology.

Specifications:

  • Part Number: ATSHA204A-STUCZ-T
  • Manufacturer: Microchip Technology
  • Type: CryptoAuthentication™ Secure Hardware IC
  • Interface: Single-Wire (SWI) / I²C (configurable)
  • Operating Voltage: 2.0V to 5.5V
  • Temperature Range: -40°C to +85°C
  • Package: SOT-23-3
  • Security Features:
  • SHA-256 Hash Algorithm
  • 4.5Kb EEPROM (512 bytes for configuration, keys, and data)
  • Unique 72-bit serial number
  • High-quality NIST-compliant random number generator
  • Secure key storage with tamper protection
  • Hardware-based cryptographic acceleration

Descriptions:

The ATSHA204A is a secure authentication IC designed for embedded systems requiring cryptographic verification. It provides hardware-based security for applications such as IoT, firmware protection, and secure boot. The device supports secure key storage, message authentication, and challenge-response protocols.

Features:

  • Cryptographic Engine: Implements SHA-256 for secure hashing and HMAC operations.
  • Secure Storage: Stores keys and data in a tamper-resistant EEPROM.
  • Unique ID: Each device has a factory-programmed unique serial number.
  • Low Power Consumption: Suitable for battery-powered applications.
  • Configurable I/O: Supports Single-Wire (SWI) or I²C interface (selectable via configuration).
  • High Durability: EEPROM supports up to 100,000 write cycles.
  • Applications:
  • Secure boot validation
  • IoT device authentication
  • Anti-counterfeiting
  • Secure firmware updates

This device is commonly used in systems requiring strong hardware-based security without relying on software-based solutions vulnerable to attacks.

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