DS28EL25Q+U

The DS28EL25Q+U is a 1-Wire EEPROM device designed for secure data storage and authentication. It features 112 bytes of EEPROM memory organized as four pages of 28 bytes each, which can be individually set to open, read-only, or OTP (one-time programmable) modes. The device is equipped with a unique, unalterable 64-bit ROM identification number, which allows for precise tracking and authentication within a network of devices.
The DS28EL25Q+U supports a strong cryptographic algorithm for secure challenge-and-response authentication, ensuring that data is communicated safely and only to authorized entities. It operates on a single communication line, simplifying integration and reducing the number of pins required on microcontrollers or peripherals.
This EEPROM is ideal for use in applications that require secure access and authentication, such as IoT devices, secure peripherals, consumables, and accessory management. Its small footprint, low power consumption, and robust security features make it a versatile choice for developers looking to implement secure data storage and authentication in their products.

The DS28EL25Q+U is a 1-Wire EEPROM with SHA-256 authentication. Equivalent products would typically include similar 1-Wire EEPROMs with secure authentication features. While exact matches are uncommon due to proprietary technology, consider products from companies like Maxim Integrated (now part of Analog Devices) that offer secure memory devices. Always verify compatibility and specifications with the manufacturer.

The DS28EL25Q+U is a 1-Wire EEPROM device with several notable features. It includes a 1-Wire interface for communication, which simplifies connectivity by allowing data transfer and power to be transmitted over a single line. The device provides 2.5Kb of EEPROM memory, organized into 32-byte pages for efficient data management. It features a unique 64-bit ROM ID for device identification and authentication purposes.
The DS28EL25Q+U supports SHA-256 cryptographic operations for secure data protection and authentication. It offers page-level write protection and supports both read and write operations. The device includes a decrement-only counter and a user-programmable OTP (One-Time Programmable) EPROM segment, enabling additional security and anti-tamper measures.
Operating over a wide voltage range from 2.8V to 5.25V, the DS28EL25Q+U is suitable for various applications, including secure data storage, system authentication, and accessory management. It is designed to operate in a wide temperature range, making it versatile for different environments. The device's compact package and robust feature set make it a suitable choice for secure embedded systems.

The DS28EL25Q+U is a 1-Wire ECDSA (Elliptic Curve Digital Signature Algorithm) authenticated EEPROM. It operates with a simple 1-Wire interface that requires only one data line (plus ground) for communication and power. This device is typically housed in a small form factor package, often a 6-pin TDFN.
The pin functions are generally as follows:
1. GND: Ground reference for the device.
2. DQ: Data and power pin, which is the 1-Wire bus interface. This single line is used for communication and parasitic power.
3. NC (No Connect): Some pins may be marked as No Connect, which should be left unconnected.
The device's primary function is to securely store and authenticate data using ECDSA, making it ideal for applications requiring proof of authenticity and data integrity. The DS28EL25Q+U provides secure storage for 224 bits of user memory with cryptographic operations and a unique 64-bit ROM ID.

The DS28EL25Q+U is manufactured by Maxim Integrated, which is currently a part of Analog Devices, Inc. Maxim Integrated is a company that designs, manufactures, and sells analog and mixed-signal integrated circuits for a wide range of industries. It focuses on providing products for applications in the automotive, industrial, communications, consumer, and computing markets. The company is known for its expertise in power management, signal processing, and various other technologies integral to electronic devices. By merging with Analog Devices, Inc., Maxim Integrated has expanded its reach and capabilities, further strengthening its position in the semiconductor industry.

The DS28EL25Q+U is a secure authentication IC used primarily in applications requiring secure storage and verification of cryptographic keys. Its main application areas include:
1. Secure Authentication: Used in devices needing protection against counterfeiting and unauthorized use.
2. IoT Devices: Ensures secure communication between devices in the Internet of Things ecosystem.
3. Industrial Equipment: Protects against unauthorized firmware updates and unauthorized part usage.
4. Medical Devices: Ensures authenticity and safety in sensitive medical equipment.
5. Consumer Electronics: Provides content and accessory protection.
6. Secure Data Logging: Used in applications where data integrity and authenticity are crucial.
These applications leverage the device’s strong security features, including ECDSA (Elliptic Curve Digital Signature Algorithm) authentication.

The DS28EL25Q+U is a 1-Wire EEPROM with SHA-256 Authenticated R/W Protection, and it comes in a 6-pin TDFN (Thin Dual Flat No-lead) package.