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DS28EL15Q+T Datasheet

Download or read online Maxim Integrated DS28EL15Q+T DeepCover Secure Authenticator with 1-Wire SHA-256 and 512-Bit User EEPROM pdf datasheet.



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with 1-Wire SHA-256 and 512-Bit User EEPROM
General Description
DeepCoverK embedded security solutions cloak sensi-
tive data under multiple layers of advanced physical
security to provide the industry’s most secure key stor-
age possible. The Deepcover Secure Authenticator
(DS28EL15) combines crypto-strong bidirectional secure
challenge-and-response authentication functionality with
an implementation based on the FIPS 180-3-specified
Secure Hash Algorithm (SHA-256). A 512-bit user-
programmable EEPROM array provides nonvolatile stor-
age of application data. Additional protected memory
holds a read-protected secret for SHA-256 operations
and settings 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
DS28EL15. Slave-to-host authentication is used by a host
system to securely validate that an attached or embed-
ded DS28EL15 is authentic. Host-to-slave authentication
is used to protect DS28EL15 user memory from being
modified by a nonauthentic host. The DS28EL15 commu-
nicates over the single-contact 1-Wire
speed. The communication follows the 1-Wire protocol
with the ROM ID acting as node address in the case of a
multidevice 1-Wire network.
Applications
Authentication of Consumables
Secure Feature Control
Ordering Information
appears at end of data sheet.
1-Wire is a registered trademark and DeepCover is a trademark
of Maxim Integrated Products, Inc.
For related parts and recommended products to use with this part, refer to:
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.
ABRIDGED DATA SHEET
DeepCover Secure Authenticator
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: 1.8V ±5%, -40°C to +85°C
S ±8kV HBM ESD Protection (typ)
S 6-Pin TDFN-EP Package
1.8V
bus at overdrive
M
2
(I
C PORT)
µC
www.maximintegrated.com/DS28EL15.related
DS28EL15
Features
Typical Application Circuit
R
= 820Ω
P
2
MAXIMUM I
C BUS CAPACITANCE 400pF
R
P
V
CC
SDA
SCL
DS24L65
1-Wire LINE
SLPZ
IO
DS28EL15
219-0021; Rev 0; 12/12

Summary of Contents

Page 1

... Maxim Integrated Products, Inc. For related parts and recommended products to use with this part, refer to: For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com. ABRIDGED DATA SHEET DeepCover Secure Authenticator S Symmetric-Key-Based Bidirectional Secure ...

Page 2

... Programming Current I PROG Programming Time for a 32-Bit t PRD Segment or Page Protection Programming Time for the Secret t PRS Maxim Integrated DeepCover Secure Authenticator Storage Temperature Range ... -55NC to 125NC Lead Temperature (soldering, 10s) ...300NC Soldering Temperature (reflow) ...260NC CONDITIONS (Note 1.8V Q5% (Note 3) PUP ...

Page 3

... Note 24: Guaranteed by 100% production test at elevated temperature for a shorter time; equivalence of this production test to the- data sheet limit at operating temperature range is established by reliability testing. Note 25: EEPROM writes can become nonfunctional after the data-retention time is exceeded. Long-term storage at elevated tem- peratures is not recommended. Maxim Integrated DeepCover Secure Authenticator CONDITIONS T ...

Page 4

... Note 26: Refer to the full data sheet. Typical Operating Characteristics (V 1.71V 0.3V) PUP IL POWER-UP TIME 120 100 -40 - TEMPERATURE (°C) Maxim Integrated DeepCover Secure Authenticator TOP VIEW N.C. GND 60 80 EXPOSED PAD PIN NAME GND EP DS28EL15 Pin Configuration ...

Page 5

... 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 and click on Request Full Data Sheet. Ordering Information PART TEMP RANGE DS28EL15QT -40NC to 85NC Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. EP Exposed pad. Maxim Integrated ...

Page 6

... Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed ...

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