DS2502AX-500-00/T&R/

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The DS2502AX-500-00/T&R/ is a type of non-volatile memory product, as part of the Microchip Technology Inc.\'s 1-Wire programmable identification product family. It is designed to provide reliable and cost-effective solutions for biometric passwords, programmable identification, and secure data storage applications.

The DS2502AX-500-00/T&R/ uses a high-capacity EEPROM that is factory programmed with a unique, unalterable 64-bit registration number, stored in nonvolatile memory protected by SPC55/200/203 security controller. The device is used mainly as a unique identifier or a portable password module. It is a high-capacity EEPROM that is locked upon setup to prevent unauthorized modifications or tampering.

The device uses a bidirectional 2-wire serial interface that allows the user to access and store up to 1 kilobit of temperature-logging information that is stored to the on-chip EEPROM in 32-bit words. The data can be retrieved with a read instruction, stored with the write instruction, and updated with the internal write-protection locks.

The DS2502AX-500-00/T&R/ can be used for applications such as access control, health care systems, and automotive identification modules. It is also used for product tracking systems, various medical applications, and for designing a secure memory module. The 1-Wire interface provides a cost-effective way to store, collect, and update information about an individual or a product.

The single pin I/O port is used to permit a device to communicate with an external system through an A/D converter. In addition, the device can be used to achieve easy access to encrypted or hidden codes, and to store user-defined access codes with enhanced security. The device also supports external EEPROM programming and also provides data integrity checksum.

The DS2502AX-500-00/T&R/ supports programmable identification commands where an identification number can be read with a minimum of overhead. This device replaces the traditional keypad locked systems that rely on simple code handshaking and can store up to 500 identifiers. This feature allows it to be used in high security applications such as access control panels, financial transaction systems, and keyless entry systems.

The working principle of the DS2502AX-500-00/T&R/ is fairly simple. The device contains a single bidirectional port that is used to communicate with the external system via an A/D converter. The data stored to the on-chip EEPROM can be retrieved with a read instruction, stored with the write instruction, and updated with the internal write-protection locks. The device supports the 1-Wire protocol, which allows for low-cost, low-energy communication between the device and the external system.

The device also provides on-chip CRC generation and verification to ensure data integrity. The user can read and write to the device through the single I/O port. This eliminates the need to set or reset control pins during data transfer, thereby simplifying the overall design and providing a more efficient system.

In conclusion, the DS2502AX-500-00/T&R/ is a high-capacity, non-volatile memory product that is factory programmed with a unique registration number and is suitable for various secure applications. It supports the 1-Wire protocol and provides on-chip CRC generation and verification to ensure secure communications. It also includes internal write-protection locks and is used primarily as a secure password module. It is an efficient device that offers a cost-effective solution for secure data storage applications.

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