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DS28E15Q+T Datasheet

Download or read online Maxim Integrated DS28E15Q+T 1-Wire SHA-256 Secure Authenticator with 512-Bit User EEPROM pdf datasheet.



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ABRIDGED DATA SHEET
1-Wire SHA-256 Secure Authenticator
General Description
The DS28E15 combines crypto-strong bidirectional
secure challenge-and-response authentication func-
tionality with an implementation based on the FIPS
180-3-specified Secure Hash Algorithm (SHA-256). A
512-bit user-programmable EEPROM array provides
nonvolatile storage of application data. Additional pro-
tected 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 fac-
tory 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 num-
ber within the application. A bidirectional security model
enables two-way authentication between a host system
and slave-embedded DS28E15. Slave-to-host authenti-
cation is used by a host system to securely validate that
an attached or embedded DS28E15 is authentic. Host-
to-slave authentication is used to protect DS28E15 user
memory from being modified 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 multidevice 1-Wire network.
R
P
MAXIMUM I
3.3V
2
(I
C PORT)
µC
1-Wire is a registered 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’s website at www.maxim-ic.com.
with 512-Bit User EEPROM
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
M
Authentication of Consumables
Secure Feature Control
Ordering Information
Typical Application Circuit
= 1.1kΩ
2
C BUS CAPACITANCE 320pF
R
P
V
CC
SDA
SCL
DS2465
1-Wire LINE
SLPZ
IO
DS28E15
#1
www.maxim-ic.com/DS28E15.related
219-0018; Rev 0; 6/12
DS28E15
Features
Applications
appears at end of data sheet.
DS28E15
DS28E15
#2
#n
1

Summary of Contents

Page 1

... C PORT) µC 1-Wire is a registered 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 Maxims website at www.maxim-ic.com. with 512-Bit User EEPROM ...

Page 2

ABRIDGED DATA SHEET 1-Wire SHA-256 Secure Authenticator 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 Note: The SFN package is qualified for electro-mechanical ...

Page 3

ABRIDGED DATA SHEET 1-Wire SHA-256 Secure Authenticator ELECTRICAL CHARACTERISTICS (continued -40NC to 85NC, unless otherwise noted.) (Note 1) A PARAMETER SYMBOL EEPROM Programming Current I PROG Programming Time for a 32-Bit t PROG Segment Write/Erase Cycling Endurance N ...

Page 4

ABRIDGED DATA SHEET 1-Wire SHA-256 Secure Authenticator ELECTRICAL CHARACTERISTICS (continued -40NC to 85NC, unless otherwise noted.) (Note 1) A Note 24: EEPROM writes can become nonfunctional after the data-retention time is exceeded. Long-term storage at elevated tem- peratures ...

Page 5

... To request the full data sheet DS28E15 and click on Request Full Data Sheet. Ordering Information PART TEMP RANGE DS28E15G -40NC to 85NC DS28E15GT -40NC to 85NC DS28E15QT -40NC to 85NC DS28E15P -40NC to 85NC DS28E15PT -40NC to 85NC Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. EP Exposed pad. with 512-Bit User EEPROM ...

Page 6

... Maxim 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. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated Products, Inc. 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 2012 Maxim Integrated Products © ...

Latest comments:

  • We use this divice DS28E15X-W20 1T MAXIM in some of products but this component is broken in the corners, could you help me with some info about the packaging . I can send you picsture my email hernandeza eetechinc.com
  • We use this divice DS28E15X-W20 1T MAXIM in some of products but this component is broken in the corners, could you help me with some info about the packaging . I can send you picsture

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