Maxim Integrated DS2704
The DS2704 provides 1280 bits of EEPROM data storage and a Secure Hash Algorithm (SHA) engine. The Dallas 1-WireÒ interface enables serial communication on a single battery contact and the 64-bit unique serial number allows multidrop networking and identification of individual devices. The 1280-bit memory is organized as 5 pages of 32 bytes each and supports storage of battery cell characteristics, charging voltage, current, and temperature parameters, as well as battery pack manufacturing data.| Part No. | DS2704 |
|---|---|
| Datasheet | DS2704 Download |
| Manufacturer |  Maxim Integrated |
| Description | 1280-Bit EEPROM |
| Buy | Stock & Price |
GENERAL DESCRIPTION
The EEPROM pages are in circuit rewritable and can be individually locked to write protect data. The DS2704 employs the Secure Hash Algorithm (SHA-1) specified in the Federal Information publication 180-1 and 180-2, and ISO/IEC 10118-3. SHA-1 provides a robust cryptographic solution to ensure battery packs or other peripherals have been manufactured by authorized sources. The DS2704 processes a host transmitted challenge and the 64bit secret key stored on chip to produce a 160-bit response for transmission back to the host. The secret key is never transmitted between the battery and the host. PIN CONFIGURATION VDD NC NC 1 6 DQ VSS NC 2 5 3 4 3mm × 3mm TDFN (TOP VIEW ¾PADS ON BOTTOM) Top Side A1 Mark 1 A B C 1.98 mm 1.73 2 3 APPLICATION EXAMPLE PACK+ 150W V DD DQ UCSP (FUTURE AVAILABILITY) (TOP VIEW ¾BALLS ON BOTTOM)FEATURES
§ § § § § Secure Challenge and Response Authentication Using the SHA-1 Algorithm Five Lockable 32-Byte Pages of EEPROM Dallas 1-Wire Interface...
