GENERAL DESCRIPTION
The W25Q40CL (4M-bit) Serial Flash memories provide 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 2.3V to 3.6V power supply with current consumption as low as 1mA active and 1µA for power-down. All devices are offered in space-saving packages.

FEATURES
• Family of SpiFlash Memories
   – W25Q40CL: 4M-bit/512K-byte (524,288)
   – 256-byte per programmable page
   – Uniform 4KB Sectors, 32KB & 64KB Blocks
• SPI with Single / Dual Outputs / I/O
   – Standard SPI: CLK, /CS, DI, DO, /WP, /Hold
   – Dual SPI: CLK, /CS, IO0, IO1, /WP, /Hold
   – Quad SPI: CLK, /CS, IO0, IO1, IO2, IO3
• Data Transfer up to 416M-bits / second
   – Clock operation to 104MHz.
   – 208/416MHz equivalent Dual/Quad SPI
   – Auto-increment Read capability.
• Efficient “Continuous Read Mode”
   – Low Instruction overhead
   – Continuous Read
   – As few as 16 clocks to address memory
   – Allows true XIP operation
• Software and Hardware Write Protection
   – Write-Protect all or portion of memory
   – Enable/Disable protection with /WP pin
   – Top or bottom array protection
• Flexible Architecture with 4KB sectors
   – Uniform Sector/Block Erase (4/32/64-kbytes)
   – Program one to 256 bytes < 1ms
   – Erase/Program Suspend & Resume
   – More than 100,000 erase/write cycles
   – More than 20-year data retention
• Low Power, Wide Temperature Range
   – Single 2.3 to 3.6V supply
   – 1mA active current, <1µA Power-down(typ.)
   – -40°C to +85°C operating range
• Space Efficient Packaging
   – 8-pin SOIC 150/208-mil
   – 8-pad USON 2x3mm