參數(shù)資料
型號(hào)： DS2704W
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： DRAM
英文描述： 1280-Bit EEPROM with SHA-1 Authentication
中文描述： 128 X 8 1-WIRE SERIAL EEPROM, UUC
封裝： DIE
文件頁(yè)數(shù)： 1/18頁(yè)
文件大?。?/td> 237K
代理商： DS2704W
1 of 18
011206
GENERAL DESCRIPTION
The DS2704 provides 1280 bits of EEPROM data
storage and a Secure Hash Algorithm (SHA) engine.
The Dallas 1-Wire 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. 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 64-
bit 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.
APPLICATION EXAMPLE
Li+
Safety
Circuit
DS2704
PACK+
THM
DATA
PACK-
V
DD
DQ
V
SS
150
4.7V
0.01 F
150
ORDERING INFORMATION
PART
DS2704G+
DS2704G+T&R
DS2704W
PIN CONFIGURATION
DQ
1
3
2
6
4
5
VSS
NC
NC
NC
VDD
3mm × 3mm TDFN
(TOP VIEW
PADS ON BOTTOM)
Top Side A1 Mark
A
1.98 mm
1.73
B
C
1
2
3
UCSP (FUTURE AVAILABILITY)
(TOP VIEW
BALLS ON BOTTOM)
FEATURES
Secure Challenge and Response Authentication
Using the SHA-1 Algorithm
Five Lockable 32-Byte Pages of EEPROM
Dallas 1-Wire Interface with Standard and
Overdrive Communications Speeds
Unique 64-Bit Serial Number
Compatible with DS2502 Memory Map and Read
Function Command
Operates with V
DD
as Low as 2.5V
Tiny Chip-Scale UCSP and 3mm x 3mm TDFN
Packaging (Pb-free)
TEMP RANGE
-20 C to +70 C
-20 C to +70 C
-20 C to +70 C
PIN-PACKAGE
6-TDFN
DS2704G+ on Tape-and-Reel
Bare Die
DS2704
1280-Bit EEPROM with SHA-1 Authentication
www.maxim-ic.com
+ Denotes lead-free package.
1-Wire is a registered trademark of Dallas Semiconductor.
相關(guān)PDF資料
PDF描述
DS2705 SHA-1 Authentication Master
DS2705U SHA-1 Authentication Master
DS2705UT SHA-1 Authentication Master
DS2745 Low-Cost I2C Battery Monitor
DS2746 Low-Cost 2-Wire Battery Monitor with Ratiometric A/D Inputs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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