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ATSHA204

ATSHA204 Datasheet Mature

(file size: 1.11MB, 80 pages, revision H, updated: 07/2014)

Client/Host authentication IC with EEPROM. Not Recommended for New Design. Replaced by ATSHA204A

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Not Recommended for New Design. Replaced by ATSHA204A

The Atmel® ATSHA204 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.

Key Parameters

Parameter
Value

Operating Voltage (Vcc):

2.0 to 5.5

Interface Type:

Single-wire; I2C

Density:

4.5Kb

Algorithm Type:

NIST SHA-256

Key Size:

256

Zones:

16

Temp. Range (deg C):

-40 to 85

 

Ordering Codes

Ordering Code Package Speed Power Supply Operational Range Comment Buy Online Samples