Having insight into how the memory cells are organized, is very important for understanding the Write and Erase operations. One page holds 256 bytes and there are 4096 pages (4096 pages x 256 bytes = 1,048,576 bytes total). Furthermore, the memory is organized in pages. This memory module contains 256 sectors of 4 KB, each, as well as 16 blocks of 64 KB, each. The flash memory density is usually expressed in bits, so exactly 8,388,608 bits are organized in units of 8 bits (bytes), which gives 1,048,576 bytes of data memory.
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The flash memory module used on this Click board™ is the EN25Q80B, an 8 Mbit serial flash memory with 4 KB Uniform Sector, from EON Silicon Solutions. Addition of 512 bytes of one-time programmable (OTP) memory can be useful for building secure storage devices and similar secure storage applications. The flash memory IC used on this Click board™, features Serial Flash Discoverable Parameters (SFDP) mode, used to retrieve the advanced information from the device, such as the operating characteristics, structure and vendor specified information, memory size, operating voltage, timing information, and more.ĭue to the high data transfer speed via the standard SPI interface, as well as the improved reliability of the stored information, this Click board™ can be used as a mass storage option in multimedia devices, data drives, non-volatile data storage in embedded applications, and similar applications that require reliable permanent storage of data blocks. The used flash module has very good endurance and it can withstand up to 100,000 write cycles, with the data retention period of about 20 years. In other words, this Click board™ is a flash memory medium with the capacity of 1 MB. Flash Click is 8,388,608 bits (8 Mbit) on a Click board™, organized into 1,048,576 bytes (1 MB).
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