The DS28CN01 is a SHA-1 (Secure Hash Algorithm) secured EEPROM device.
It provides secure, bidirectional authentication and tamper-proof data storage.
The DS28CN01 utilizes the SHA-1 algorithm for secure authentication using challenge-and-response digital signature technology. It also contains an EEPROM array for nonvolatile data storage and unauthorized modification of EEPROM data is protected by SHA-1 operations.
The DS28CN01 is ideal for secure applications that require protection of intellectual property, tracking the expiration of consumables, securing system settings, reference design management, and authentication of system components.
SUNNYVALE, CA—July 26, 2007—Maxim Integrated Products (NASDAQ: MXIM) introduces the DS28CN01, a new highly integrated secure memory device. The DS28CN01 provides bidirectional challenge-and-response authentication protection by using the internationally recognized SHA-1 (Secure Hash Algorithm) cryptographic algorithm. A 1kb EEPROM array and associated command set ensure tamper-proof storage of data written to the integrated nonvolatile data array. Each EEPROM page is protected against data modification by the SHA-1 algorithm, and also includes programmable write protection and EPROM/OTP (one-time-programmable) emulation modes. The DS28CN01 is ideal for a broad range of cost-sensitive end equipment in which intellectual property needs to be protected and/or equipment features need to be securely controlled, such as network routers/switches, notebook PC battery packs, laser and inkjet printer cartridges, and GPS navigators. Within such applications, the DS28CN01 is used for: managing reference designs; protecting intellectual property; securing system settings; tracking the expiration of consumables; and authenticating systems, board-level designs, accessories, and peripherals.
Every DS28CN01 has a guaranteed unique, factory-programmed, read-only memory (ROM), 64-bit ID number that can be used for a variety of system-level functions including unique electronic serialization of equipment and network-node identification. The 64-bit ROM ID also serves as an integral element in the device's overall secure functionality as a dynamic variable within the SHA-1 computation.
Communication with the DS28CN01 is accomplished through an industry-standard, 400kHz I²C/SMBus™-compatible interface that includes a programmable bus timeout feature to reset the interface if a bus-lockup fault condition is detected. The DS28CN01 operates from 1.8V to 5V over the -40°C to +85°C industrial temperature range. This device is packaged in an 8-pin µSOP. Pricing starts at $0.65 (1000-up, FOB USA).
