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DS28E15

DeepCover Secure Authenticator with

1-Wire SHA-256 and 512-Bit User EEPROM

ABRIDGED DATA SHEET

General Description

DeepCover™ embedded security solutions cloak sensi-

tive data under multiple layers of advanced physical

security to provide the most secure key storage possible.

The DeepCover Secure Authenticator (DS28E15) com-

bines crypto-strong bidirectional secure challenge-and-

response authentication functionality with an imple-

mentation based on the FIPS 180-3-specified Secure

Hash Algorithm (SHA-256). A 512-bit user-program-

mable EEPROM array provides nonvolatile storage of

application data. Additional protected memory holds a

read-protected secret for SHA-256 operations and set-

tings for memory protection control. Each device has

its own guaranteed unique 64-bit ROM identification

number (ROM ID) that is factory programmed into the

chip. This unique ROM ID is used as a fundamental input

parameter for cryptographic operations and also serves

as an electronic serial number within the application. A

bidirectional security model enables two-way authen-

tication between a host system and slave-embedded

DS28E15. Slave-to-host authentication is used by a host

system to securely validate that an attached or embed-

ded DS28E15 is authentic. Host-to-slave authentication is

used to protect DS28E15 user memory from being modi-

fied by a nonauthentic host. The DS28E15 communicates

over the single-contact 1-Wire

bus at overdrive speed.

The communication follows the 1-Wire protocol with the

ROM ID acting as node address in the case of a multide-

vice 1-Wire network.

Applications

Authentication of Consumables

Secure Feature Control

Features

S Symmetric-Key-Based Bidirectional Secure

Authentication Model Based on SHA-256

S Strong Authentication with a High-Bit-Count User-

Programmable Secret and Input Challenge

S 512 Bits of User EEPROM Partitioned Into Two

Pages of 256 Bits

S User-Programmable and Irreversible EEPROM

Protection Modes Including Authentication, Write

and Read Protect, and OTP/EPROM Emulation

S Unique Factory-Programmed, 64-Bit Identification

Number

S Single-Contact 1-Wire Interface

S Operating Range: 3.3V ±10%, -40°C to +85°C

S ±8kV HBM ESD Protection (typ)

S 2-Pin SFN, 6-Pin TDFN-EP, and 6-Pin TSOC

Packages

Typical Application Circuit

219-0018; Rev 2; 12/12

Ordering Information appears at end of data sheet.

DeepCover is a trademark and 1-Wire is a registered trademark of Maxim Integrated Products, Inc.

For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/DS28E15.related

SDA

SCL

SLPZ IO

= 1.1kΩ

MAXIMUM I

C BUS CAPACITANCE 320pF

3.3V

1-Wire LINE

µC

C PORT)

DS2465

DS28E15

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

Summary of content (5 pages)

PAGE 1
ABRIDGED DATA SHEET DS28E15 DeepCover Secure Authenticator with 1-Wire SHA-256 and 512-Bit User EEPROM General Description DeepCover™ embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.
PAGE 2
ABRIDGED DATA SHEET DS28E15 DeepCover Secure Authenticator with 1-Wire SHA-256 and 512-Bit User EEPROM ABSOLUTE MAXIMUM RATINGS IO Voltage Range to GND.....................................-0.5V to +4.0V IO Sink Current....................................................................20mA Operating Temperature Range........................... -40NC to +85NC Junction Temperature......................................................+150NC Storage Temperature Range.............................
PAGE 3
ABRIDGED DATA SHEET DS28E15 DeepCover Secure Authenticator with 1-Wire SHA-256 and 512-Bit User EEPROM ELECTRICAL CHARACTERISTICS (continued) (TA = -40NC to +85NC, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 1 mA EEPROM Programming Current IPROG VPUP = 3.
PAGE 4
ABRIDGED DATA SHEET DS28E15 DeepCover Secure Authenticator with 1-Wire SHA-256 and 512-Bit User EEPROM ELECTRICAL CHARACTERISTICS (continued) (TA = -40NC to +85NC, unless otherwise noted.) (Note 1) Note 23: Data retention is tested in compliance with JESD47G. Note 24: Guaranteed by 100% production test at elevated temperature for a shorter time; equivalence of this production test to thedata sheet limit at operating temperature range is established by reliability testing.
PAGE 5
ABRIDGED DATA SHEET DS28E15 DeepCover Secure Authenticator with 1-Wire SHA-256 and 512-Bit User EEPROM Note to readers: This document is an abridged version of the full data sheet. Additional device information is available only in the full version of the data sheet. To request the full data sheet, go to www.maximintegrated.com/DS28E15 and click on Request Full Data Sheet. Ordering Information PART TEMP RANGE PIN-PACKAGE DS28E15G+ -40NC to +85NC 2 SFN DS28E15G+T -40NC to +85NC 2 SFN (2.