Winbond NOR 4Mbit SPI Flash Memory 8-Pin SOIC, W25X40CLSNIG/TUBE

4M-bit 2.5V Serial Flash Memory with uniform 4KB sectors and Dual SPI

Single and Dual Serial Peripheral Interface
Uniform 4KB erasable sectors & 32KB/64KB erasable blocks
2,048 pages (256 bytes), page program in 0.4mS (typ.)
Fast Read (0Bh), Fast Read Dual Output (3Bh) and Fast Read Dual I/O (BBh) instructions
Clock operation up to 104MHz (208MHz equivalent with Fast Read Dual Output)
2.3 to 3.6V power supply
1mA active read current, 1μA power down current
-40° to +85°C operating range
Electronic ID in Single or Dual I/O mode
Read Unique ID (4Bh) instruction
Hardware and software write protection for top or bottom blocks
Volatile & Non-volatile Status Register Bits