Bidirectional Authenticator. DS28E39 Datasheet

DS28E39 Authenticator. Datasheet pdf. Equivalent


Maxim Integrated DS28E39
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DS28E39
DeepCover Secure ECDSA Bidirectional
Authenticator with ChipDNA PUF Protection
General Description
The DS28E39 is an ECDSA public-key-based bidirec-
tional secure authenticator that incorporates Maxim’s
patented ChipDNA™ feature, a physically unclonable
function (PUF) to provide a cost-effective solution with
the ultimate protection against security attacks. Using the
random variation of semiconductor device characteristics
that naturally occur during wafer fabrication, the ChipDNA
circuit generates a unique output value that is repeatable
over time, temperature, and operating voltage. Attempts
to probe or observe ChipDNA operation modifies the
underlying circuit characteristics, preventing discovery
of the unique value used by the chip cryptographic func-
tions. The DS28E39 utilizes the ChipDNA output as key
content to cryptographically secure all device stored data
and optionally, under user control, as the private key for
the ECDSA signing operation. With ChipDNA capabil-
ity, the device provides a core set of cryptographic tools
derived from integrated blocks including an asymmetric
(ECC-P256) hardware engine, a FIPS/NIST-compliant
true random number generator (TRNG), 2Kb of secured
EEPROM, a decrement-only counter and a unique 64-bit
ROM identification number (ROM ID). The ECC public/
private key capabilities operate from the NIST-defined
P-256 curve to provide a FIPS 186-compliant ECDSA
signature generation function. The unique ROM ID is
used as a fundamental input parameter for cryptographic
operations and serves as an electronic serial number
within the application. The DS28E39 communicates over
the single-contact 1-Wire® bus at both standard and
overdrive speeds. 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 Medical Sensors and Tools
● Secure Management of Limited Use Consumables
● IoT Node Authentication
● Peripheral Authentication
● Reference Design License Management
● Printer Cartridge Identification and Authentication
Benefits and Features
● Robust Countermeasures Protect Against Security
Attacks
• Patented Physically Unclonable Function Secures
Device Data
• Actively Monitored Die Shield Detects and Reacts
to Intrusion Attempts
• All Stored Data Cryptographically Protected from
Discovery
● ECDSA Authenticated R/W of Stored Data and
Counter.
● Efficient Public-Key Authentication Solution to
Authenticate Peripherals
• FIPS 186-Compliant ECDSA P256 Signature for
Challenge/Response Authentication
• ChipDNA Generated Public/Private Key Pair.
• TRNG with NIST SP 800-90B Compliant Entropy
Source
● Supplemental Features Enable Easy Integration into
End Applications
• 17-Bit One-Time Settable, Nonvolatile Decrement-
Only Counter with Authenticated Read
• 2Kbits of EEPROM for User Data, Key, Control
Registers, and Certificate
• Unique and Unalterable Factory Programmed
64-Bit Identification Number (ROM ID)
• Single-Contact, 1-Wire Interface Communication
with Host at 11.7kbps and 62.5kbps
• Operating Range: 3.3V ±10%, -40°C to +85°C
• 6-Pin TDFN-EP Package (3mm x 3mm)
Ordering Information appears at end of data sheet.
DeepCover and 1-Wire are registered trademarks and
ChipDNA is a trademark of Maxim Integrated Products, Inc.
19-100444; Rev 0; 12/18


DS28E39 Datasheet
Recommendation DS28E39 Datasheet
Part DS28E39
Description DeepCover Secure ECDSA Bidirectional Authenticator
Feature DS28E39; Request Security User Guide and Developer Software › EVALUATION KIT AVAILABLE Click here for produc.
Manufacture Maxim Integrated
Datasheet
Download DS28E39 Datasheet




Maxim Integrated DS28E39
DS28E39
DeepCover Secure ECDSA Bidirectional
Authenticator with ChipDNA PUF Protection
Typical Application Circuit
VCC
100kΩ
VCC
PIOX
1kΩ
Q1 RPUP
*PMV65XP
PIOY
BIDIRECTIONAL
OPEN DRAIN PORT
VCC
µC
Rp
VCC
I2C
PORT
GND
SDA PIOA
SCL PIOB
DS2476
IO
IO
DS28E39
IO CEXT
GND
CX
*NOTE: USE A Q1 LOW-IMPEDANCE BYPASS OR EQUALLY DRIVE LOGIC ‘1’ WITH PIOY.
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Maxim Integrated DS28E39
DS28E39
DeepCover Secure ECDSA Bidirectional
Authenticator with ChipDNA PUF Protection
Absolute Maximum Ratings
Voltage Range on Any Pin Relative to GND...........-0.5V to 4.0V
Maximum Current into Any Pin........................... -20mA to 20mA
Operating Temperature Range............................ -40°C to +85°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -40°C to +125°C
Lead temperature (soldering, 10s)................................... +300°C
Soldering Temperature (reflow)........................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Information
6 TDFN-EP
Package Code
Outline Number
Land Pattern Number
Thermal Resistance, Single-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
T633+2
21-0137
90-0058
55ºC/W
9ºC/W
42ºC/W
9ºC/W
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(Limits are 100% tested at TA = +25°C and TA = +85°C. Limits over the operating temperature range and relevant supply voltage
range are guaranteed by design and characterization. Specifications marked GBD are guaranteed by design and not production tested.
Specifications to the minimum operating temperature are guaranteed by design and are not production tested. )
PARAMETER
IO PIN: GENERAL DATA
1-Wire Pullup Voltage
1-Wire Pullup Resistance
Input Capacitance
Capacitor External
Input Load Current
High-to-Low Switching
Threshold
Input Low Voltage
SYMBOL
VPUP
RPUP
CIO
CX
IL
VTL
VIL
CONDITIONS
System requirement
(Note 1)
(Notes 1, 2)
System requirement. IO pin at VPUP
IO pin at VPUP
(Notes 3, 4)
(Note 5)
MIN TYP MAX UNITS
2.97
399.5
3.3
0.1 +
CX
470
10
0.65 x
VPUP
3.63
1000
540.5
360
0.10 x
VPUP
V
Ω
nF
nF
µA
V
V
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