Please consider this device

The 25 series Serial Flash family features a four-wire, SPIcompatible interface that allows for a low pin-count package which occupies less board space and ultimately lowers total system costs. The SST25VF040B devices are enhanced with improved operating frequency for lower power consumption. SST25VF040B SPI serial flash memories are manufactured with SST proprietary, high-performance CMOS SuperFlash technology. The split-gate cell design and thick-oxide tunneling injector attain better reliability and manufacturability compared with alternate approaches.

   Serial Interface Architecture

  SPI Compatible: Mode 0 and Mode 3

  Supports 50 MHz SPI clock (80MHz no longer available see EOL NOTIFICATION)

   Low Power Consumption:

  Active Read Current: 10 mA (typical)

  Program & Erase Current: 30mA (max)

  Standby Current: 5 µA (typical)

   Flexible Erase Capability

  Uniform 4 KByte sectors

  Uniform 32 KByte and 64 KByte overlay blocks

   Fast Erase and Byte-Program:

  Chip-Erase Time: 35 ms (typical)

  Sector-/Block-Erase Time: 18 ms (typical)

  Byte-Program Time: 7 µs (typical)

   Auto Address Increment (AAI) Programming

  Decrease total chip programming time overByte-Program operations

   Packages Available

  8-lead SOIJ (200 mils)

  8-lead SOIC (150 mils)

  8-contact WSON (6mm x 5mm)

  Chip Scale Package

   All devices are RoHS compliant