DS24L65P+

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The DS24L65P+ is a 64kB EEPROM device integrated with additional features to reduce overall application complexity and cost. In addition to the Industry Standard Serial Link, the DS24L65P+ offers several communication interfaces and an Overdrive mode which allow direct connection to popular I/O buses such as SPI, I2C and MICROWIRE. Additionally, the DS24L65P+ offers Watchdog Timer and 2-Wire Serial Interface mechanisms for monitoring the integrity of a communication interface.

Memory

The DS24L65P+ is a 64kB nonvolatile memory that functions as a reliable data storage device. The device stores up to 64kB (65536 bytes) of information. All the information written to the memory is permanently stored even when power is lost. The device operates with an operating voltage of 2.5-5.5V and a temperature range of -40°C to +85°C without compromising performance.

The memory is organized into pages, each page containing 64 bytes. To read or write values, the master must select the page containing the data to be accessed. The device supports byte, page and sequential read and write operations. The byte write operation allows single byte data storage, while the page write operation allows multiple bytes of data to be stored at the same time. The sequential read and write operations allow data to be read or written in sequence.

The device also has an auto write function that automatically writes data to the memory when the number of write cycles of a row of memory reach a specific threshold. This prevents data corruption when the write cycles reach the maximum value. Additionally, the device can store up to 16 bits of additional data such as chip ID or manufacturer information.

Application Field and Working Principle

The DS24L65P+ is most suitable for applications in consumer electronics and industrial automation. It is typically used for embedded systems that require reliable data storage. Examples include embedded PC systems, programmable logic controllers, robots, digital control systems, point-of-sale systems, automated teller machines, and digital signs.

The working principle of the device is based on EEPROM (electrically erasable programmable read-only memory). This type of memory is nonvolatile, meaning it stores data even when the power is turned off. Data is written to the memory by sending the appropriate write instruction and all relevant data to the device. Data can be read back by sending a read instruction to the device.

The DS24L65P+ also offers additional features such as a Watchdog Timer and 2-Wire Interface to ensure that communications remain reliable. The Watchdog Timer initiates a reset if it is not periodically triggered by the master. The 2-Wire Interface can read data from the device in a setup or hold mode.

The device is designed to provide a durable and reliable data storage solution for applications where data is constantly changing. It offers high speed, low power, and low latency and is compatible with multiple communication protocols. The device can be accessed using an Industry Standard Serial Link, SPI, I2C, MICROWIRE, and more. The device is available in different packages and is offered with an integrated temperature sensor for applications where temperature monitoring is important.

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