AT45DB321D-CU

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Memory products are one of the many components used in a variety of applications. AT45DB321D-CU is a Flash-based Non-Volatile Memory manufactured by Atmel Corporation. It is a secure, high-performance memory utilized in various applications. This article will discuss the application fields and working principle of AT45DB321D-CU.

Applications of AT45DB321D-CU Flash NVM

The AT45DB321D-CU is an ultra-low voltage memory used in many applications for secure data storage and processing. Some of these applications include:

• Smart cards
• Industrial automation control
• Medical and healthcare equipment
• Consumer electronics
• Identification systems
• Data synchronization

This NON-volatile Flash memory is designed for secure applications such as smart cards and consumer electronics, as it is able to protect critical data with fast, deterministic erase and program operations even after power down, including critical applications such as Mifare, fingerprint and ID, transaction and financial data security.

Working Principle of AT45DB321D-CU

The AT45DB321D-CU is a single-chip Flash NVM, utilizing a non-volatile AT45DB321D memory array. This memory is made up of 32M bits / 4M bytes of storage capacity, organized as 512 pages of 256 bytes. Pages are the basic data block size, with the maximum program and erase sizes of 256 bytes. The device also has an internal memory controller that manages the internal array and allows for fast, deterministic erase and program operations.

The erase program for the AT45DB321D-CU is divided into two operations - page erase and block erase. Page erase comes in three types: page erase, page erase and verify, and page erase and read. Block erase comes in three types: block erase, block erase and verify, and block erase and read. A page erase erases a single page, while a block erase erases a block (4K bytes). Pre-conditioning for erase and program operations are performed using the Flash memory controller. After each operation, the device verifies the integrity of the stored data.

The AT45DB321D-CU is capable of operating at speeds of up to 33MHz when used with high performance microcontrollers. It also has an on-chip write protection circuitry that prevents accidental overwriting and disruption of critical data. The device also has an on-board temperature sensor for temperature monitoring and over-temperature protection.

Conclusion

The AT45DB321D-CU is an ultra-low voltage non-volatile Flash memory, offering a reliable platform for secure applications such as smart cards, medical and healthcare equipment, industrial automation control and consumer electronics. It utilizes an advanced internal memory controller to provide fast, deterministic erase and program operations. It can also operate at speeds of up to 33MHz, and offers on-chip write protection and on-board temperature sensors for added safety. Thus, the AT45DB321D-CU is an ideal solution for a wide range of applications.

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