DS28CN01_09 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – 1Kb I2C/SMBus EEPROM with SHA-1 Engine

ABRIDGED DATA SHEET
Rev 1; 4/09
1Kb I²C/SMBus EEPROM with SHA-1 Engine
General Description
The DS28CN01 combines 1024 bits of EEPROM with
challenge-and-response authentication security imple-
mented with the Federal Information Publications (FIPS)
180-1/180-2 and ISO/IEC 10118-3 Secure Hash
Algorithm (SHA-1). The memory is organized as four
32-byte pages. Data copy protection and EPROM emu-
lation features are supported for each memory page.
Each DS28CN01 has a guaranteed unique factory-pro-
grammed 64-bit registration number. Communication with
the DS28CN01 is accomplished through an industry-
standard I²C-compatible and SMBus™-compatible
interface. The SMBus timeout feature resets the
device’s interface if a bus-timeout fault condition is
detected.
Applications
PCB Unique Serialization
Accessory and Peripheral Identification
Equipment Registration and License
Management
Network Node Identification
Printer Cartridge Configuration and Monitoring
Medical Sensor Authentication and Calibration
System Intellectual Property Protection
Pin Configuration
TOP VIEW
AD0 1
AD1 2
N.C. 3
GND 4
+
DS28CN01
μSOP
8 V_CC
7 N.C.
6 SCL
5 SDA
Features
♦ 1024 Bits of EEPROM Memory Partitioned Into
Four Pages of 256 Bits
♦ Dedicated Hardware-Accelerated SHA-1 Engine
for Generating SHA-1 MACs
♦ EEPROM Memory Pages Can Be Individually
Copy Protected or Put Into EPROM Mode
(Program from 1 to 0 Only)
♦ Write Access Requires Knowledge of the Secret
and the Capability of Computing and Transmitting
a 160-Bit MAC as Authorization
♦ Unique, Factory-Programmed, and Tested 64-Bit
Registration Number Assures Absolute
Traceability Because No Two Parts are Alike
♦ Endurance 200,000 Cycles at +25°C
♦ Serial Interface User Programmable for I²C Bus
and SMBus Compatibility
♦ Supports 100kHz and 400kHz I²C Communication
Speeds
♦ +5.5V Tolerant Interface Pins
♦ Operating Ranges: +1.62V to +5.5V, -40°C to +85°C
♦ 8-Pin µSOP Package
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
DS28CN01U-A00+ -40°C to +85°C 8 μSOP
DS28CN01U-A00+T -40°C to +85°C 8 μSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Typical Operating Circuit appears at end of data sheet.
SMBus is a trademark of Intel Corp.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.