Serial Flash

Winbond's W25X and W25Q SpiFlash® Memories feature the popular Serial Peripheral Interface (SPI), densities from 1M to 128M-bit, small erasable sectors and the industry's highest performance. The W25X family operates up to 104MHz and supports "Dual-Output SPI", effectively doubling the clock rate to 208MHz. The W25Q family is "superset" compatible with W25X devices while adding Dual-I/O and Quad-I/O SPI for even higher performance. Clock rates up to 104MHz achieve an equivalent of 416MHz (50M-Byte/S transfer rate) when using Quad-SPI. This is more than eight times the performance of ordinary Serial Flash (50MHz) and even surpasses asynchronous Parallel Flash memories while using fewer pins and less space. Faster transfer rates mean controllers can execute code (XIP) directly from the SPI interface or further improve boot time when shadowing code to RAM. Click here to learn more about serial code storage and the benefits of spiFlash memories.

Most SpiFlash® memories are offered in an 8-pin plastic SOIC with either 150 mil or 208 mil body using less than 25% the space of Parallel Flash packages. The 8-pin SOIC packages allow a migration path from 1M-bit to 64M-bit provided that the PCB pads are elongated to support both 150 and 208-mil packages. Higher density SpiFlash® memories are also offered in 16-pin plastic 300-mil width SOIC package. Optional 8-contact WSON and 8-pin DIP packages may also be available. Please contact Winbond for further package information.
SpiFlash® memories offer a pin, space and cost efficient alternative to ordinary Parallel Flash memories, and are ideal for a wide range of applications including: PCs, DVD, Blu-Ray, WLAN, DSL, Cable, Printers, Hard Drives, Set Top Box, LCD-TV, Mobile Phones, Bluetooth, GPS, MP3, Meters, DSP, FPGAs and more.

SpiFlash W25X & W25Q Memory Overview & Selection Guide