W25Q256FVFIQ

GENERAL DESCRIPTIONS

The W25Q256FV (256M-bit) Serial Flash memory provides a storage solution for systems with limited

space, pins and power. The 25Q series offers flexibility and performance well beyond ordinary Serial Flash

devices. They are ideal for code shadowing to RAM, executing code directly from Dual/Quad SPI (XIP)

and storing voice, text and data. The device operates on a single 2.7V to 3.6V power supply with current

consumption as low as 4mA active and 1µA for power-down. All devices are offered in space-saving

packages.

The W25Q256FV array is organized into 131,072 programmable pages of 256-bytes each. Up to 256

bytes can be programmed at a time. Pages can be erased in groups of 16 (4KB sector erase), groups of

128 (32KB block erase), groups of 256 (64KB block erase) or the entire chip (chip erase). The

W25Q256FV has 8,192 erasable sectors and 512 erasable blocks respectively. The small 4KB sectors

allow for greater flexibility in applications that require data and parameter storage. (See Figure 2.)

The W25Q256FV support the standard Serial Peripheral Interface (SPI), Dual/Quad I/O SPI as well as 2-

clocks instruction cycle Quad Peripheral Interface (QPI): Serial Clock, Chip Select, Serial Data I/O0 (DI),

I/O1 (DO), I/O2 (/WP), and I/O3 (/HOLD). SPI clock frequencies of up to 104MHz are supported allowing

equivalent clock rates of 208MHz (104MHz x 2) for Dual I/O and 416MHz (104MHz x 4) for Quad I/O when

using the Fast Read Dual/Quad I/O instructions. These transfer rates can outperform standard

Asynchronous 8 and 16-bit Parallel Flash memories. The Continuous Read Mode allows for efficient

memory access with as few as 8-clocks of instruction-overhead to read a 24-bit address, allowing true XIP

(execute in place) operation.

A Hold pin, Write Protect pin and programmable write protection, with top or bottom array control, provide

further control flexibility. Additionally, the device supports JEDEC standard manufacturer and device ID

and SFDP Register, a 64-bit Unique Serial Number and three 256-bytes Security Registers.