Click here to ask about the production status of specific part numbers.
DS2477
DeepCover Secure SHA-3 Coprocessor with
ChipDNA PUF Protection
General Description
The DS2477 secure I C coprocessor with built-in 1-Wire
Benefits and Features
● Robust Countermeasures Protect Against Security
Attacks
2
®
master combines FIPS202-compliant secure hash algo-
rithm (SHA-3) challenge and response authentication with
• Patented Physically Unclonable Function Secures
Device Data
™
Maxim’s patented ChipDNA feature, a physically unclon-
able 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, tempera-
ture, and operating voltage. Attempts to probe or observe
ChipDNA operation modifies the underlying circuit char-
acteristics thus preventing discovery of the unique value
used by the chip cryptographic functions. The DS2477 uti-
lizes the ChipDNA output as key content to cryptograph-
ically secure all device-stored data. With ChipDNA ca-
pability, the device provides a core set of cryptographic
tools derived from integrated blocks including a SHA-3 en-
gine, a FIPS/NIST compliant true random number gen-
erator (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 se-
rial 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
• 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
2
the I C master and any attached 1-Wire SHA-3 slaves.
2
• I C Communication, up to 1MHz
For 1-Wire line driving, internal user-adjustable timers re-
lieve the system host processor from generating time-criti-
cal 1-Wire waveforms, supporting both standard and over-
drive 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.
• Operating Range: 3.3V ±10%, -40°C to +85°C
• 6-Pin TDFN-EP Package (3mm x 3mm)
Request DS2477
Security User Guide
Applications
● Authentication of Medical Sensors and Tools
● Secure Management of Limited Use Consumables
● IoT Node Authentication
Ordering Information appears at end of data sheet.
● Peripheral Authentication
● Reference Design License Management
● Printer Cartridge Identification and Authentication
1-Wire is a registered trademark and ChipDNA is a trademark of Maxim Integrated Products, Inc.
19-100402; Rev 2; 11/20
5秒后页面跳转
AO3401场效应管参数、引脚图、应用原理图
BT131可控硅参数及引脚图、工作原理详解
74LS32芯片参数、引脚图及功能真值表
全球首块英伟达H200交付 黄仁勋“送货上门”
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
