DS2477
DeepCover Secure SHA-3 Coprocessor with ChipDNA PUF Protection
Protect Your Development Investment with Crypto-Strong Authentication and Advanced Physical Security
Maxim Confidential 
MyMaxim SubscriptionsProduct Details
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 ChipDNA™ 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.
Key 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: 3.3V ±10%, -40°C to +85°C
- 6-Pin TDFN-EP Package (3mm x 3mm)
Applications/Uses
- Authentication of Medical Sensors and Tools
- IoT Node Authentication
- Peripheral Authentication
- Printer Cartridge Identification and Authentication
- Reference Design License Management
- Secure Management of Limited Use Consumables
| Crypto Engine | Symmetric |
| Applications | Companion Coprocessor IP Protection Identification Systems Medical Consumable ID Medical Sensor Authentication and Calibration PCB ID and Authentication Print Cartridge Authentication Printer Cartridge Configuration and Monitoring Rack Card Security |
| Bus Type | 1-Wire I2C |
| Memory Type | EEPROM |
| Memory Size | 2K x 1 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | TDFN/6 |
| Budgetary Price (See Notes) | $1.02 @1k |
Technical Docs
Click any title below to view the detail page where available.
Description
The DS28E50 evaluation kit (EV kit) provides the hardware and software necessary to exercise the features of the DS28E50 and DS2477. The EV system consists of five DS28E50 and DS2477 devices in a 6-pin TDFN package, two DS9121BQ+ evaluation TDFN socket boards, and a DS9481P-300# USB-to-I2C/1-Wire® adapter. The evaluation software runs on Windows® 10 and Windows 7 operating systems. It provides a handy user interface to exercise the features of the DS28E50 and DS2477. Note that the evaluation software described herein is the light version that is downloadable from Maxim’s website.
View DetailsFeatures
- Demonstrates the Features of the DS28E50 DeepCover® SHA3 1-Wire Authenticator
- Demonstrates the Features of the DS2477 DeepCover SHA3 Secure Coprocessor
- 1-Wire Communication Is Logged to Aid Firmware Designers Understanding of DS28E50 and DS2477
- 1-Wire/I2C USB Adapter Creates a Virtual COM Port on Any PC
- Fully Compliant with USB Specification v2.0
- Software Runs on Windows 10 and Windows 7
- Convenient On-Board Test Points, TDFN Socket
Description
The DS28E16 evaluation kit (EV kit) provides the hardware and software necessary to exercise the features of the DS28E16. The EV system consists of five DS28E16 and DS2477 devices in a 6-pin TDFN package, two DS9121BQ+ evaluation TDFN socket boards, and a DS9481P-300# USB-to-I2C/1-Wire® adapter. The evaluation software runs under Windows® 10, Windows 8, and Windows 7 operating systems, both 64-bit and 32-bit versions. It provides a handy user interface to exercise the features of the DS28E16.
View DetailsFeatures
- Demonstrates the Features of the DS28E16 DeepCover® SHA-3 1-Wire Authenticator
- Logs 1-Wire/I2C Communication to Aid Firmware Designer’s Understanding of the DS28E16
- 1-Wire/I2C USB Adapter Creates a Virtual COM Port on Any PC
- Fully Compliant with USB Specification v2.0
- Software Runs on Windows 10, Windows 8, and Windows 7
- Convenient On-Board Test Points and TDFN Socket
Description
The DS28C50 evaluation kit (EV kit) provides the hardware and software necessary to exercise the features of the DS28C50 and DS2477. The EV system consists of five DS28C50 and DS2477 devices in a 6-pin TDFN package, two DS9121BQ+ evaluation TDFN socket boards, and a DS9481P-300# USB-to-I2C/1-Wire® adapter. The evaluation software runs on Windows® 10 and Windows 7 operating systems. It provides a handy user interface to exercise the features of the DS28C50 and DS2477. Note that the evaluation software described herein is the lite version that is downloadable from Maxim’s website. To request the full developer version, click the link at the top of the page.
View DetailsFeatures
- Demonstrates the Features of the DS28C50 DeepCover® SHA3 I2C Authenticator
- Demonstrates the Features of the DS2477 DeepCover SHA3 Secure Coprocessor
- I2C Communication Is Logged to Aid Firmware Designers Understanding of DS28C50 and DS2477
- 1-Wire/I2C USB Adapter Creates a Virtual COM Port on Any PC
- Fully Compliant with USB Specification v2.0
- Software Runs on Windows 10 and Windows 7
- Convenient On-Board Test Points, TDFN Socket
Description
The DS28C16 evaluation kit (EV kit) provides the hardware and software necessary to exercise the features of the DS28C16. The EV system consists of five DS28C16 and DS2477 devices in an 8- and 6-pin TDFN package, respectively, a DS9121DQ+ and DS9121BQ+ evaluation TDFN socket board, and a DS9481P-300# USB-to-I2C/1-Wire® adapter. The evaluation software runs under Windows® 10, Windows 8, and Windows 7 operating systems, both 64-bit and 32-bit versions. It provides a handy user interface to exercise the features of the DS28C16.
View DetailsFeatures
- Demonstrates the Features of the DS28C16 DeepCover® SHA-3 I2C Authenticator
- Logs I2C Communication to Aid Firmware Designer’s Understanding of the DS28C16
- 1-Wire/I2C USB Adapter Creates a Virtual COM Port on Any PC
- Fully Compliant with USB Specification v2.0
- Software Runs on Windows 10, Windows 8, and Windows 7
- Convenient On-Board Test Points and TDFN Socket
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
Parameters
| Crypto Engine | Symmetric |
| Applications | Companion Coprocessor IP Protection Identification Systems Medical Consumable ID Medical Sensor Authentication and Calibration PCB ID and Authentication Print Cartridge Authentication Printer Cartridge Configuration and Monitoring Rack Card Security |
| Bus Type | 1-Wire I2C |
| Memory Type | EEPROM |
| Memory Size | 2K x 1 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | TDFN/6 |
| Budgetary Price (See Notes) | $1.02 @1k |
Key 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: 3.3V ±10%, -40°C to +85°C
- 6-Pin TDFN-EP Package (3mm x 3mm)
Applications/Uses
- Authentication of Medical Sensors and Tools
- IoT Node Authentication
- Peripheral Authentication
- Printer Cartridge Identification and Authentication
- Reference Design License Management
- Secure Management of Limited Use Consumables
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 ChipDNA™ 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.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
Request a Quote