In secure embedded systems, you often need to authenticate messages or connected devices but many microcontrollers aren't set up for the necessary cryptography. That's where the Atmel ATSHA204 comes in.
The Atmel ATSHA204 is an optimized authentication chip that includes a 4.5Kb EEPROM. 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.
Each ATSHA204 ships with a guaranteed unique 72-bit'serial number. Using the cryptographic protocols supported by the chip, a host system or remote server can prove that the serial number is both authentic and not a copy. The ATSHA204 can generate high-quality random numbers and employ them for any purpose, including usage as part of the crypto protocols of this chip.
This breakout board allows you to use the small SOT-23 package in your prototypes!
Supply Voltage: 2.0-5.5V
Integrated capability for both host and client operations
Superior SHA-256 hash algorithm, HMAC option
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)
4.5-Kbit EEPROM for keys and data
512 OTP (One Time Programmable) bits for fixed information
A vibration motor! This itty-bitty, shaftless vibratory motor is perfect for non-audible indicators. Use in any number of applications to indicate to the wearer when a status has changed. All moving parts are protected within the housing. With a 2-3.6V operating range, these units shake crazily at 3V. Once anchored to a PCB or within a pocket, the unit...
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