Analog DevicesDS28E84EVKIT#Eingebettete Systementwicklungsboards und -kits

Taking Medical Consumable Sterilization to the Next Level with Radiation Resistance Authenticators

Today's medical instruments and their supporting equipment often incorporate single-use consumable sensors, cables, probes, and/or other peripherals to ensure sterility before making contact with the patient. In many cases these consumables can directly benefit from the addition of nonvolatile (NV) memory for embedding manufacturing characteristics, operating parameters, identification, or usage monitoring. This added electronic functionality allows for factory calibration of the consumable to the medical instrument. It also ensures the quality of the product through recording, limiting, or even preventing unsanitary reuse.

Unfortunately, these various benefits have historically not been realized when gamma irradiation is the required sterilization method for production. This is because gamma radiation is directly incompatible with semiconductor devices (ICs) that traditionally incorporate floating-gate memory technologies used in NV memories such as erasable programmable read-only (EPROM), electrically erasable programmable read- only (EEPROM), and flash. Exposure to gamma's high-ionizing radiation corrupts the logic bit values within these memories, so the relevant data programmed prior to gamma sterilization cannot be retained. Thus, designers have been forced to choose between the added functionality provided by embedded memory and the preferred sterilization method for their product.

The DS28E83 and DS28E84 employ memory storage cell technology that is highly resistant to gamma and E-beam radiation, making them ideal for applications that require embedded memory to be programmed prior to packaging and irradiation sterilization of the end product in which they are used. In addition, they provide symmetric key SHA-256 and public key ECDSA secure authentication to protect patients against the risks associated with non-qualified counterfeit devices or possible incidental overuse or re-use.

Key Features and Benefits

• •  High Radiation Resistance Allows User-Programmable Manufacturing or Calibration Data Before Medical Sterilization
• •  Resistant Up to 75kGy (kiloGray) of Radiation
• •  One Time Programmable (OTP) 10kb of User Data, Keys, and Certificates
• •  ECC-P256 Compute Engine
• •  FIPS 186 ECDSA P256 Signature and Verification
• •  ECDH Key Exchange for Session Key Establishment
• •  ECDSA Authenticated R/W of Configurable Memory
• •  SHA-256 Compute Engine
• •  FIPS 180 MAC for Secure Download/Boot
• •  FIPS 198 HMAC for Bidirectional Authentication and Optional GPIO Control
• •  SHA-256 OTP (One-Time Pad) Encrypted R/W of Configurable Memory Through ECDH Established Key
• •  One GPIO Pin with Optional Authentication Control
• •  Open-Drain, 4mA/0.4V
• •  Optional SHA-256 or ECDSA Authenticated On/Off and State Read
• •  Optional ECDSA Certificate to Set On/Off After Multiblock Hash for Secure Download
• •  TRNG with NIST SP 800-90B Compliant Entropy Source with Function to Read Out
• •  Optional Chip Generated Pr/Pu Key Pairs for ECC Operations or Secrets for SHA256 Functions
• •  Unique and Unalterable Factory Programmed 64-Bit Identification Number (ROM ID)
• •  Optional Input Data Component to Crypto and Key Operations
• •  Advanced 1-Wire Protocol Minimizes Interface to Just Single Contact
• •  Operating Range: 3.3V ±10%, 0°C to +50°C
• •  ±8kV HBM ESD Protection of 1-Wire IO Pin
• •  6-Pin TDFN and 2-Pin SFN

Applications

• •  Medical Consumables Secure Authentication
• •  Medical Tools/Accessories Identification and Calibration
• •  Accessory and Peripheral Secure Authentication
• •  Secure Storage of Cryptographic Keys for Host Controllers
• •  Secure Boot or Download of Firmware and/or System Parameters

Related Product:

DS28E83Q+T
DS28E84Q+T
DS28E83EVKIT#