AT45DB041B-SI

AT45DB041B-SI application field and working principle

A non-volatile memory, or NVM, is a type of memory that, unlike volatile memory, doesn\'t require power to retain its contents. The AT45DB041B-SI is a non-volatile serial EEPROM of 1-Mbit in size, offered in a very compact 8-pin JEDEC SOIC-8 package. It is widely used in the Memory market.

The AT45DB041B-SI is a high-speed Serial Interface EEPROM memory, consisting of four independent 256K-bit ID spaces. This device is organized as a 256 Kbit x 4 array and has an additional 64 Kbit of page buffer space, providing high-speed random read access and program and erase speeds for applications needing fast memory access and enhanced rewritable memory programming.

The AT45DB041B-SI has an Serial Peripheral Interface (SPI) that supports low, medium, and high-speed operations. The SPI interface supports Single, Dual, and Quad I/O transaction operations and uses Industry-standard protocol. The SPI interface supports standard communication mode and Dual/Quad I/O Fast Read protocol.

The AT45DB041B-SI also supports low, medium, and high speed serial clock frequencies and supports auto-predictive programming for the erase, program and read operations. In addition, the AT45DB041B-SI has a built-in TID scrambler, ID Code protection, Program/Erase Lock bits, and Floating Gate modes that can be used to protect against unauthorised access to the device.

Applications

The AT45DB041B-SI is suitable for a wide range of applications, such as memory cards, embedded systems, portable medical and military devices, automotive, industrial and consumer electronics, telecommunication and networking, instrumentation and many more.

Working principle

The AT45DB041B-SI non-volatile memory consists of four independent 256K-bit ID spaces. Each ID space contains four erase segments, each segment consisting of 8,192 rows by 256 bytes (2048 bytes) of cell array. The processor interface of the AT45DB041B-SI supports three different read modes: Sequential Read mode, Auto-Predictive Read mode, and Intel High-Speed Read Mode.

The device also supports high-speed program and erase operations. Program operations can be executed in two different modes: Auto-Predictive Page Program or Standard Program. Erase operations are executed in the following modes: Block Erase, Page Erase or Sector Erase. In addition, the program and erase operations can be locked or unlocked for each 512-Byte Page or for Sector with one command.

The AT45DB041B-SI also incorporates a high-speed serial peripheral that provides additional features, such as Single, Dual and Quad I/O Fast Read, Auto-Predictive Programming, Program/Erase Lock bits, Floating Gate modes and ID Code protection. This serial peripheral allows the device to be accessed and programmed via a low, medium and high-speed serial interface.

The AT45DB041B-SI is a low-power memory device. It has two power-down modes with Standby and Inactive modes, which reduce the device power consumption. It also features an on-chip Advance Data Protection (DPS) to protect data from being lost.

Conclusion

The AT45DB041B-SI non-volatile memory is a reliable and high performance memory device suitable for a wide range of applications. It provides extremely fast access time, high programming and erase speeds, and a wide range of Serial Peripheral Interface (SPI) protocol support, along with a range of advanced features enabling enhanced data protection, program and erase operations.