Microchip Technology Inc
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ATSHA204A

Status: In Production

Features:

  • Cost-effective Symmetric Authentication Solution
  • Fast Authentication
  • Easy Key Management
  • Best suited for counterfeit prevention
  •  Crypto Element with Protected Hardware-based Key Storage
  •  Secure Symmetric Authentication Device Host and Client Operations
  •  Superior SHA-256 Hash Algorithm with Message Authentication Code (MAC)
  • and Hash-Based Message Authentication Code (HMAC) Options  Best-in-class, 256-bit Key Length; Storage for Up to 16 Keys
  •  Guaranteed Unique 72-bit Serial Number
  •  Internal, High-quality Random Number Generator (RNG)
  •  4.5Kb EEPROM for Keys and Data
  • 512 bit OTP (One Time Programmable) Bits for Fixed Information  Multiple I/O Options̶
  • UART-compatible High-Speed, Single-Wire Interface
  • 1MHz I2C Interface
  •  2.0V to 5.5V Supply Voltage Range
  •  1.8V to 5.5V Communications Voltage Range  <150nA Sleep Current
  • Secure Download and Boot Ecosystem Control
  • Message Security
  • Anti-Cloning 
  •  
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

Fast, Secure, and Cost Effective Symmetric Authentication

The Microchip SHA-based CryptoAuthentication crypto element devices have been architected to provide flexible user-configured security to enable a wide range of authentication models. The ATSHA204A is the first device in the SHA device group. The ATECC108A and ATECC508A are supersets of the ATSHA204A and thus upward compatible. As with all CryptoAuthentication devices, the ATSHA204A is easy to design in with no crypto expertise required.
Secure Hash Algorithm (SHA) algorithms are widely used in most cryptographic systems and remain an important component in most modern authentication protocols. These devices support the SHA-256 standard. The ATSHA204A is the most cost-effective solution in the Microchip CryptoAuthentication portfolio. It integrates the SHA-256 hash algorithm with a 4.5Kb EEPROM and provides robust hardware authentication using secure key/data storage. The tiny packaging and a single-wire interface make the device ideal for handheld electronic systems and any space-constrained embedded system.
CryptoAuthentication devices in the SHA mode include client and host security capabilities that offload key storage and algorithm execution from the microcontroller, significantly reducing system cost and complexity. SHA based symmetric authentication is fast relative to asymmetric approaches, making the ATSHA204A a good choice with speed (and/or cost) are important considerations. CryptoAuthentication devices have full metal shields over all of the internal circuitry, so that if an attacker cuts or short circuits any trace in the shield, the product stops functioning. Additional security features include internal clocks and voltage generation, encrypted memories, tamper detection, and fully secure production test methodologies. With the ATSHA204A implementing host-side security to provide a full system solution is now easier than ever.

The Microchip's ATSHA204A is a full turnkey security device. It includes a 4.5Kb EEPROM divided into 16 slots. This array can be used for storage of keys, miscellaneous read/write, read-only, password or secret data, and consumption tracking. Access to the various sections of memory can be restricted in a variety of ways and then the configuration locked to prevent changes.

Access to the chip is through a standard I2C interface at speeds up to 1Mb/sec. The chip also supports a single-wire interface that can reduce the number of GPIOs required on the system processor and/or reduce the number of pins on connectors. It is compatible with most UART or serial I/O controllers. System integration is eased with a wide supply voltage range and an ultra-low sleep current of less than 100nA.

Additional Features
    • Cost-effective Symmetric Authentication Solution
    • Fast Authentication
    • Easy Key Management
    • Best suited for counterfeit prevention
    •  Crypto Element with Protected Hardware-based Key Storage
    •  Secure Symmetric Authentication Device Host and Client Operations
    •  Superior SHA-256 Hash Algorithm with Message Authentication Code (MAC)
    • and Hash-Based Message Authentication Code (HMAC) Options  Best-in-class, 256-bit Key Length; Storage for Up to 16 Keys

    •  Guaranteed Unique 72-bit Serial Number

    •  Internal, High-quality Random Number Generator (RNG)

    •  4.5Kb EEPROM for Keys and Data

    • 512 bit OTP (One Time Programmable) Bits for Fixed Information  Multiple I/O Options̶

    • UART-compatible High-Speed, Single-Wire Interface

    • 1MHz I2C Interface

    •  2.0V to 5.5V Supply Voltage Range
    •  1.8V to 5.5V Communications Voltage Range  <150nA Sleep Current

    • Secure Download and Boot Ecosystem Control

    • Message Security

    • Anti-Cloning 

    •  
Parametrics
Name
Value
Operating Current Typical (mA)
0.5
Operating Voltage (Vcc)
2 - 4.5
Density
4.5Kb
Temp# Range (deg C)
-40 - 85
Interface Type
Single-wire; I2C
Zones
16
Key Size
256
Algorithm Type
NIST SHA-256

Documents

Jump to:

Data Sheets

Application Notes

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05/01/2011
192KB

Device Documentation

Software Library

07/06/2017

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
Demo & Evaluation Boards
Crypto Kit UDFN Socketed XPRO Development Board
Crypto Kit UDFN Socketed XPRO Development Board ( AT88CKSCKTUDFN-XPRO )

The AT88CKSCKTUDFN-XPRO is a Microchip XPRO extension kit for Microchip CryptoAuthentication™ devices in an 8-pin UDFN package. The board attaches to any Microchip Micro-controller board that supports the XPRO interface. The boards operate with the following Microchip Devices

ATECC108A/508A - Ecliptic Curve Security devices with I2C or Single Wire Interface ...

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Crypto Kit SOIC Socketed XPRO Development Board
Crypto Kit SOIC Socketed XPRO Development Board ( AT88CKSCKTSOIC-XPRO )

The AT88CKSCKTSOIC-XPRO is a Microchip XPRO extension kit for Microchip CryptoAuthentication™ devices in an 8-pin SOIC Package. The board attaches to any Microchip Micro-controller board that supports the XPRO interface.  The boards operate with the following Microchip Devices

  • ATECC108A/508A - Ecliptic Curve Security devices with I2C or Single Wire Interface
...

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AT88CK101SK-TSU-XPRO
AT88CK101SK-TSU-XPRO ( AT88CK101SK-TSU-XPRO )

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Add To Cart
AT88CK101SK-SSH-XPRO
AT88CK101SK-SSH-XPRO ( AT88CK101SK-SSH-XPRO )

Learn More
Add To Cart
AT88CK101SK-MAH-XPRO
AT88CK101SK-MAH-XPRO ( AT88CK101SK-MAH-XPRO )

A development tool for applications that protect confidential files, encrypt downloads, perform two-factor logons, authenticate products, and prevent software piracy. The starter kit includes an AVR baseboard (ATMicrobase) with a USB interface that lets designers learn and experiment on their PCs.

For the

...

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AT88CK101SK-RBH
AT88CK101SK-RBH ( AT88CK101SK-RBH )

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Add To Cart
CryptoAuth-XPRO
CryptoAuth-XPRO ( ATCRYPTOAUTH-XPRO )

CryptoAuth Xplained Pro evaluation and development kit is an add-on board to the Xplained and XplainedPro evaluation platforms to support the ATSHA204A, ATAES132A, and ATECC508A in embedded design applications. CryptoAuth Xplained Pro has been developed to allow fast system prototyping within the Xplained and XplainedPro evaluation environment. This kit gives engineers, developers, and decision...

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AT88CK590
AT88CK590 ( AT88CK590 )

The CryptoAuthentication AT88CK590 Demo-evaluation Kit can be used with Crypto Evaluation Studio (ACES) software (Version 5.0.0 or greater) to easily explore the operation and architectures of the ATSHA204A, ATAES132A, and ATECC508A crypto element devices. The kit is a USB dongle with a built-in AVR AT90USB1287 microcontroller, and connects directly to a users PC. It is an excellent way to...

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AT88CK101STK3
AT88CK101STK3 ( AT88CK101STK3 )

Not Recommended.

Development tool for applications that protect confidential files, encrypt downloads, perform two-factor logons, authenticate products, and prevent software piracy. The starter kit includes a microbase board with a USB interface that lets designers learn and experiment on their PCs. It includes a...

Learn More
Add To Cart
Software Libraries
CryptoAuthLib

CryptoAuthLib is a software support library for the ATSHA204A,

...

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RoHS Information

Part Number
Device Weight
Shipping Weight
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
ATSHA204A-STUCZ-T
0.008300
0.039000
3
SOT-23
1.3mm
Matte Tin
e3
Rohs icon
efup china icon
ATSHA204A-SSHCZ-T
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
Rohs icon
efup china icon
ATSHA204A-SSHDA-B
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
Rohs icon
efup china icon
ATSHA204A-SSHDA-T
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
Rohs icon
efup china icon
ATSHA204A-RBHCZ-B
0.027000
0.142857
3
CONTACT
2.5x6.5x0.5mm
NiPdAu
e4
Rohs icon
efup china icon
ATSHA204A-RBHCZ-T
0.027000
0.215800
3
CONTACT
2.5x6.5x0.5mm
NiPdAu
e4
Rohs icon
efup china icon
ATSHA204A-XHCZ-T
0.035800
0.199200
8
TSSOP
4.4mm
NiPdAu
e4
Rohs icon
efup china icon
ATSHA204A-XHDA-T
0.035800
0.199200
8
TSSOP
4.4mm
NiPdAu
e4
Rohs icon
efup china icon
ATSHA204A-MAHCZ-S
0.009600
0.538600
8
UDFN
2x3x0.6mm
NiPdAu
e4
Rohs icon
efup china icon
ATSHA204A-MAHDA-T
0.009600
0.538600
8
UDFN
2x3x0.6mm
NiPdAu
e4
Rohs icon
efup china icon
ATSHA204A-MAHCZ-T
0.009600
0.538600
8
UDFN
2x3x0.6mm
NiPdAu
e4
Rohs icon
efup china icon
ATSHA204A-MAHDA-S
0.009600
0.538600
8
UDFN
2x3x0.6mm
NiPdAu
e4
Rohs icon
efup china icon
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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