SHA-3 Coprocessor. DS2477 Datasheet

DS2477 Coprocessor. Datasheet pdf. Equivalent


Maxim Integrated DS2477
Click here for production status of specific part numbers.
DS2477
EVALUATION KIT AVAILABLE
DeepCover Secure SHA-3 Coprocessor
with ChipDNA PUF Protection
General Description
The DS2477 secure I2C coprocessor with built-in 1-Wire®
master combines FIPS202-compliant secure hash
algorithm (SHA-3) challenge and response authentication
with Maxim’s patented ChipDNATM feature, a physically
unclonable technology (PUF) to provide a cost-effective
solution with the ultimate protection against security
attacks. The ChipDNA implementation utilizes 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 thus preventing discovery
of the unique value used by the chip cryptographic
functions. The DS2477 utilizes the ChipDNA output as
key content to cryptographically secure all device-stored
data. With ChipDNA capability, the device provides a
core set of cryptographic tools derived from integrated
blocks including a SHA-3 engine, a FIPS/NIST compliant
true random number generator (TRNG), 2Kb of secured
EEPROM, and a unique 64-bit ROM identification number
(ROM ID). 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
DS2477 provides the SHA-3 and memory functionality
required by a host system to communicate with and
operate a 1-Wire SHA-3 slave. In addition, it performs
protocol conversion between the I2C master and any
attached 1-Wire SHA-3 slaves. For 1-Wire line driving,
internal user-adjustable timers relieve the system
host processor from generating time-critical 1-Wire
waveforms, supporting both standard and overdrive
1-Wire communication speeds. The 1-Wire line can be
powered down under software control. Strong pullup
features support 1-Wire power delivery for commands
that require higher current consumption.
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
● Efficient Secure Hash Algorithm Authenticates and
Manages Peripherals
• FIPS 202-Compliant SHA-3 Algorithm for
Bidirectional Authentication
• FIPS 198-Compliant Keyed-Hash Message
Authentication Code (HMAC)
• TRNG with NIST SP 800-90B Compliant Entropy
Source
● Supplemental Features Enable Easy Integration into
End Applications
• 2Kb of EEPROM for User Data, Key, and Control
Registers
• One Open-Drain GPIO Pin
• Unique and Unalterable Factory Programmed
64-Bit Identification Number (ROM ID)
Large 1-Wire Block Buffer (126 bytes) for Efficient
Data Transfer
• 1-Wire Standard and Overdrive Timing
Communication Speeds
• I2C Communication, Up to 1MHz
• Operating Range: 2.2V to 3.63V, -40°C to +85°C
• 6-Pin TDFN-EP Package (3mm x 3mm)
Ordering Information appears at end of data sheet.
1-Wire is a registered trademark and ChipDNA is a trademark
of Maxim Integrated Products, Inc.
19-100402; Rev 0; 9/18


DS2477 Datasheet
Recommendation DS2477 Datasheet
Part DS2477
Description DeepCover Secure SHA-3 Coprocessor
Feature DS2477; Click here for production status of specific part numbers. DS2477 EVALUATION KIT AVAILABLE DeepCove.
Manufacture Maxim Integrated
Datasheet
Download DS2477 Datasheet




Maxim Integrated DS2477
DS2477
DeepCover Secure SHA-3 Coprocessor
with ChipDNA PUF Protection
Typical Application Circuit
VCC
RP1
VCC
I2C
µC PORT
GND
RP2 VCC
GPIO
DS2477
SDA IO
SCL
GND
RP3
IO
IO
GPIO
DS28E50
CEXT
GND
IO
CX
IO
GPIO
DS28E50
CEXT
GND
IO
CX
IO
GPIO
DS28E50
CEXT
GND
IO
CX
www.maximintegrated.com
Maxim Integrated 2



Maxim Integrated DS2477
DS2477
DeepCover Secure SHA-3 Coprocessor
with ChipDNA PUF Protection
Absolute Maximum Ratings
Voltage Range on Any Pin Relative to GND...........-0.5V to 4.0V
Storage Temperature Range............................. -40°C to +125°C
Maximum Current into Any Pin........................... -20mA to 20mA
Lead temperature (soldering, 10s)................................... +300°C
Operating Temperature Range............................ -40°C to +85°C
Soldering Temperature (reflow)........................................+260°C
Junction Temperature.......................................................+150°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
T633+2
Outline Number
21-0137
Land Pattern Number
90-0058
Thermal Resistance, Single-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
Thermal Resistance, Four-Layer Board:
55ºC/W
9ºC/W
Junction to Ambient (θJA)
Junction to Case (θJC)
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% production tested at TA = +25°C and/or TA = +85°C. Limits over the operating temperature range and relevant supply
voltage range are guaranteed by design and characterization. Typical values are not guaranteed.)
PARAMETER
Supply Voltage
Supply Current
1-Wire Input High
SYMBOL
CONDITIONS
VCC (Note 1)
Standby
ICC Communicating/active (Note 2)
Low configuration
VIH1
Medium configuration
High configuration
MIN
2.97
TYP
3.3
0.6 x
VCC
0.6 x
VCC
0.85 x
VCC
MAX
3.63
400
10
UNITS
V
μA
mA
V
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Maxim Integrated 3







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