ATSHA204A-SSHDA-B The Microchip Technology ATSHA204A-SSHDA-B is an authentication chip featuring hardware-based key storage and the SHA-256 hash algorithm. It operates with a supply voltage range of 2.0V to 5.5V and is housed in an 8-SOIC package.
Mfr Part #:

ATSHA204A-SSHDA-B

Available from 6 distributors
Mfr Name: Microchip Technology
Microchip Technology
The Microchip Technology ATSHA204A-SSHDA-B is an authentication chip featuring hardware-based key storage and the SHA-256 hash algorithm. It operates with a supply voltage range of 2.0V to 5.5V and is housed in an 8-SOIC package.
Total Stock: 56,038 pcs
$ Price Range: $0.75

ATSHA204A-SSHDA-B Available from 6 distributors

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ATSHA204A-SSHDA-B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Manufacturer Name
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EEPROM Size
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SVHC Present
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ATSHA204A-SSHDA-B Description

Short technical summary and product information.

The ATSHA204A-SSHDA-B from Microchip Technology is a crypto element designed for secure authentication and data protection. It provides protected hardware-based key storage and supports superior SHA-256 hash algorithm operations, including Message Authentication Code (MAC) and Hash-Based Message Authentication Code (HMAC) options.

 

This device offers a 256-bit key length with storage for up to 16 keys and includes a guaranteed unique 72-bit serial number. It features an internal, high-quality Random Number Generator (RNG) and 4.5 kb of EEPROM for keys and data, along with 512 bits of One-Time Programmable (OTP) memory for fixed information.

 

Connectivity is provided through multiple I/O options, including a UART-compatible high-speed, single-wire interface and a 1 MHz I2C interface. The operating supply voltage ranges from 2.0V to 5.5V, with a communications voltage range of 1.8V to 5.5V. It consumes less than 150 nA in sleep mode.

 

The ATSHA204A-SSHDA-B is supplied in an 8-lead SOIC surface-mount package, making it suitable for applications requiring secure download and boot, ecosystem control, anti-cloning, and message security in networking and communications.

ATSHA204A-SSHDA-B Quick Information

Product Type: Authentication Chip
Series: CryptoAuthentication
Canonical Name: ATSHA204A-SSHDA-B Authentication Chip
Subcategory: Authentication Chip

ATSHA204A-SSHDA-B Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

ATSHA204A-SSHDA-B Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

ATSHA204A-SSHDA-B Features

  • Protected hardware-based key storage.
  • Superior SHA-256 hash algorithm.
  • 4.5 kb EEPROM for keys and data.
  • Internal high-quality random number generator.
  • 1 MHz I2C and UART interfaces.

ATSHA204A-SSHDA-B Applications

  • Used for secure authentication in IoT devices.
  • Ideal for anti-counterfeiting in consumables.
  • Suitable for secure communication in embedded systems.
  • Protects firmware from cloning attacks.
  • Enables secure boot and data integrity.

ATSHA204A-SSHDA-B FAQs

6 frequently asked questions generated from this part’s specifications.
What is the supply voltage range for the ATSHA204A-SSHDA-B?

The supply voltage range is 2.0V to 5.5V.

What communication voltage does the ATSHA204A-SSHDA-B support?

It supports a communications voltage range of 1.8V to 5.5V.

What is the EEPROM size of the ATSHA204A-SSHDA-B?

The device has 4.5 kbit of EEPROM for keys and data.

What hash algorithm does the ATSHA204A-SSHDA-B use?

It uses the superior SHA-256 hash algorithm.

What interfaces are available on the ATSHA204A-SSHDA-B?

It features a UART-compatible high-speed, single-wire interface and a 1 MHz I2C interface.

What is the package type for the ATSHA204A-SSHDA-B?

The component is supplied in an 8-SOIC package.

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