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ATSHA204A-RBHCZ-T

MCHPATSHA204A-RBHCZ-T

Microchip Technology
Security ICs / Authentication ICs CustSpec SHA256 UDNF
4,515 in stock
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Overview

The ATSHA204A-RBHCZ-T is a high-security CryptoAuthentication chip from Microchip designed to protect embedded systems through secure hardware-based key storage. It utilizes the SHA-256 algorithm and includes 664 bytes of EEPROM for storing sensitive data such as keys, certificates, and consumption tracking information. This specific variant features a unique 3-lead contact package with a Single-Wire Interface, making it ideal for space-constrained and accessory-based authentication.

Why Choose This Part

The device features extremely low power consumption, drawing only 150 uA in sleep mode, and operates across a wide 2V to 5.5V range. Its hardware-based SHA-256 engine provides superior security compared to software implementations while the Single-Wire Interface reduces pin count requirements on the host microcontroller.

Applications

Secure Download and Boot
Verifies firmware signatures before execution to prevent the loading of unauthorized or malicious code.
Ecosystem Control
Ensures that only authorized peripherals or consumables, such as medical disposables or printer cartridges, function with the host system.
Anti-cloning
Protects intellectual property and prevents unauthorized third-party manufacturing by requiring hardware-level authentication.
Message Security
Encrypts and authenticates small packets of data to ensure integrity and confidentiality during transmission.

Key Specifications

Type Authentication Chip
Applications Networking and Communications
Mounting Type Surface Mount
Package / Case 3-SMD, No Lead
Supplier Device Package 3-SMD

Getting Started

To evaluate this chip, use the CryptoAuthentication Starter Kit (ATCK101) or connect it to an AVR/ARM MCU using Microchip's CryptoAuthLib library. Engineers should utilize the Microchip ACES (ATECC608/ATSHA204) configuration tool to define slot permissions and lock the device before production deployment.

Also Consider

DS28E15P+T Maxim Integrated / Analog Devices - A competitive 1-Wire SHA-256 authenticator with 512 bits of user EEPROM in a small TSOC package.
ATSHA204A-MAHDA-T MCHPMicrochip Technology - Provides the same ATSHA204A functionality but in a standard 8-pad UDFN package for conventional PCB assembly.

Categories

Security ICs > Secure Elements
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