W25Q80EWSSIG

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W25Q80EWSSIG is a 4 megabits (512K x 8) serial flash memory, which may be adapted for a broad variety of embedded applications. It combines the versatility of a serial peripheral interface (SPI) with the industry’s most advanced nonvolatile memory technologies. The device can be accessed through the SPI serial bus operating on standard modes 0 (0, 0) and 3 (1, 1).

The device is organized into a single memory array of 65,536 Programmable Pages of 256-bytes each, for a total of 16,384 Kbits of memory.

The W25Q80EWSSIG is uniquely designed to allow single power-supply operation while still providing full voltage control of the P/N gates. This feature makes it ideal for applications where the power supply may vary greatly.

W25Q80EWSSIG Application Field

The W25Q80EWSSIG is suited for applications that require low-cost, single-voltage operation, and include embedded system controllers, info-entertainment systems, PCs and peripheral devices, mobile phone peripherals, digital gaming systems, PDAs, and digital imaging products.

W25Q80EWSSIG Working Principle

W25Q80EWSSIG is an 8-pin serial flash memory device manufactured using an advanced CMOS process. It has a low operating voltage of 1.65V to 1.95V (Vcc) and maximum operating temperature of 85°C. It provides a quick, simple solution for adding nonvolatile memory to any application, and is compatible with many industry-standard serial memory interface specifications.

The device contains two memory regions: a main memory array and a parameter page that are interconnected through an internal page addressable serial interface. The main memory area consists of four 64 KByte main memory banks that are further organized as 65,536 programmable pages of 256 bytes each. The parameter page consists of 256 bytes and is used to store device-specific operating parameters.

The device features a host interface, allowing direct access to the SPI serial interface with no external logic. Up to 16 MByte can be addressed across four main memory banks and two separate command sets are used to access the main memory array, parameter page and to execute various read/program/erase operations. The integrated design provides a simple, low-cost solution for adding nonvolatile memory to any application.

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