DS28CN01U-A00+ MAXIM [Maxim Integrated Products], DS28CN01U-A00+ Datasheet

DS28CN01U-A00+

Manufacturer Part Number

DS28CN01U-A00+

Description

1Kb I2C/SMBus EEPROM with SHA-1 Engine

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.DS28CN01U-A00.pdf (10 pages)

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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 I

interface. The SMBus timeout feature resets the

device’s interface if a bus-timeout fault condition is

detected.

Rev 1; 4/09

SMBus is a trademark of Intel Corp.

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.

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

1Kb I

C-compatible and SMBus™-compatible

GND

AD0

AD1

N.C.

TOP VIEW

________________________________________________________________ Maxim Integrated Products

General Description

DS28CN01

ABRIDGED DATA SHEET

μ μ SOP

C/SMBus EEPROM with SHA-1 Engine

Pin Configuration

Applications

N.C.

SCL

SDA

♦ 1024 Bits of EEPROM Memory Partitioned Into

♦ Dedicated Hardware-Accelerated SHA-1 Engine

♦ EEPROM Memory Pages Can Be Individually

♦ Write Access Requires Knowledge of the Secret

♦ Unique, Factory-Programmed, and Tested 64-Bit

♦ Endurance 200,000 Cycles at +25°C

♦ Serial Interface User Programmable for I

♦ Supports 100kHz and 400kHz I

♦ +5.5V Tolerant Interface Pins

♦ Operating Ranges: +1.62V to +5.5V, -40°C to +85°C

♦ 8-Pin µSOP Package

+ Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

Typical Operating Circuit appears at end of data sheet.

DS28CN01U-A00+

DS28CN01U-A00+T

Four Pages of 256 Bits

for Generating SHA-1 MACs

Copy Protected or Put Into EPROM Mode

(Program from 1 to 0 Only)

and the Capability of Computing and Transmitting

a 160-Bit MAC as Authorization

Registration Number Assures Absolute

Traceability Because No Two Parts are Alike

and SMBus Compatibility

Speeds

PART

Ordering Information

-40°C to +85°C

TEMP RANGE

C Communication

PIN-PACKAGE

8 μSOP

Features

C Bus

Related parts for DS28CN01U-A00+

DS28CN01U-A00+ Summary of contents

Page 1

... Serial Interface User Programmable for I and SMBus Compatibility ♦ Supports 100kHz and 400kHz I Speeds ♦ +5.5V Tolerant Interface Pins ♦ Operating Ranges: +1.62V to +5.5V, -40°C to +85°C ♦ 8-Pin µSOP Package PART DS28CN01U-A00+ DS28CN01U-A00 Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. 6 ...

Page 2

ABRIDGED DATA SHEET 2 1Kb I C/SMBus EEPROM with SHA-1 Engine ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground.........-0.5V to +6V Maximum Current on Any Pin ...........................................±20mA Operating Temperature Range ...........................-40°C to +85°C Stresses beyond those listed ...

Page 3

ABRIDGED DATA SHEET 2 1Kb I C/SMBus EEPROM with SHA-1 Engine ELECTRICAL CHARACTERISTICS (continued -40°C to +85°C.) (Note 1) A PARAMETER SYMBOL Output Fall Time from V to IH(MIN) V with a Bus Capacitance IL(MAX) from 10pF to ...

Page 4

ABRIDGED DATA SHEET 2 1Kb I C/SMBus EEPROM with SHA-1 Engine ELECTRICAL CHARACTERISTICS (continued -40°C to +85°C.) (Note 1) A Note 12: The DS28CN01 does not obstruct the SDA and SCL lines if V Note 13: The minimum ...

Page 5

ABRIDGED DATA SHEET 2 1Kb I C/SMBus EEPROM with SHA-1 Engine V CC AD_ SCL SDA Slave Address/Direction Byte To be individually accessed, each device must have a slave address that does not conflict with other devices on the bus. ...

Page 6

ABRIDGED DATA SHEET 2 1Kb I C/SMBus EEPROM with SHA-1 Engine MSB FIRST SDA SLAVE R/W ADDRESS SCL 1–7 8 IDLE START CONDITION 2 Figure 2. I C/SMBus Protocol Overview 2 I C/SMBus Protocol Data transfers can be initiated only ...

Page 7

ABRIDGED DATA SHEET 2 1Kb I C/SMBus EEPROM with SHA-1 Engine SDA t BUF t LOW SCL t t HD:STA R STOP START NOTE: TIMING IS REFERENCED TO V AND V . IL(MAX) IH(MIN) 2 Figure 3. I C/SMBus Timing ...

Page 8

ABRIDGED DATA SHEET 2 1Kb I C/SMBus EEPROM with SHA-1 Engine SHA-1 Computation Algorithm This description of the SHA-1 computation is adapted from the Secure Hash Standard SHA-1 document that can be downloaded from the NIST website. Refer to the ...

Page 9

ABRIDGED DATA SHEET 2 1Kb I C/SMBus EEPROM with SHA-1 Engine μC GND For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 8 µSOP _______________________________________________________________________________________ SDA SCL ...

Page 10

ABRIDGED DATA SHEET 2 1Kb I C/SMBus EEPROM with SHA-1 Engine REVISION REVISION NUMBER DATE 0 6/07 Initial release. 1 4/09 Created newer template-style data sheet. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied ...

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