DS28CN01 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – 1Kbit I²C/SMBus EEPROM with SHA-1 Engine

Abridged Data Sheet
www.maxim-ic.com
DS28CN01
1Kbit I²C/SMBus EEPROM
with SHA-1 Engine
GENERAL DESCRIPTION
The DS28CN01 combines 1024 bits of EEPROM
with challenge-and-response authentication security
implemented 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 pages of 32 bytes each. Data
copy-protection and EPROM emulation features are
supported for each memory page. Each DS28CN01
has a guaranteed unique factory-programmed 64-bit
registration number. Communication with the
DS28CN01 is accomplished through an industry
standard I²C- and SMBus™-compatible interface.
The SMBus timeout feature resets the device’s
interface if a bus-timeout fault condition is detected.
APPLICATIONS
Printed Circuit Board (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
TYPICAL OPERATING CIRCUIT
VCC
RP
RP
VCC
SDA
SCL
To additional
devices
µC
GND
VCC
DS28CN01
SDA
SCL
AD1
AD0 GND
Registers, Modes, and Commands are capitalized for
clarity.
FEATURES
ƒ 1024 Bits of EEPROM Memory Partitioned
Into Four Pages of 256 Bits
ƒ Dedicated Hardware-Accelerated SHA Engine
for Generating SHA-1 MACs
ƒ EEPROM Memory Pages can be Individually
Copy-Protected or Put Into an EPROM Mode
(Program from 1 to 0 Only)
ƒ Write Access Requires Knowledge of the
Secret and the Capability of Computing and
Transmitting a 160-Bit MAC as Authorization
ƒ Unique, Factory-Programmed, and Tested
64-Bit Registration Number Assures Absolute
Traceability Because No Two Parts are Alike
ƒ Endurance 200k Cycles at +25°C
ƒ Serial Interface User Programmable for I²C
Bus and SMBus Compatibility
ƒ Supports 100kHz and 400kHz I²C
Communication Speeds
ƒ 5.5V Tolerant Interface Pins
ƒ Operating Range: 1.62V to 5.5V,
-40°C to +85°C
ƒ 8-Pin µSOP Package
ORDERING INFORMATION
PART
TEMP RANGE PIN-PACKAGE
DS28CN01U+
-40°C to +85°C 8 µSOP
DS28CN01U+T
-40°C to +85°C
8 µSOP
Tape-and-Reel
+ Denotes a lead-free package.
Request full data sheet at:
www.maxim-ic.com/fullds/DS28CN01
PIN CONFIGURATION
AD0 1
AD1 2
NC 3
GND 4
8 V_CC
7 NC
6 SCL
5 SDA
SMBus is a trademark of Intel Corp.
µSOP
1 of 9
REV: 061907