W25X40CLSNIG – WINBOND

The W25X40CLSNIG is a 4-Mbit (512 K x 8) Serial Flash memory device manufactured by Winbond. It features a standard Serial Peripheral Interface (SPI), supporting single, dual, and quad SPI operation for a maximum clock frequency of 104MHz, enabling equivalent Quad-SPI read bandwidths up to 416MHz. The device operates from a supply voltage of 2.7V to 3.6V and is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The W25X40CLSNIG incorporates advanced security features including software and hardware write protection schemes. It is designed for a wide range of embedded systems applications requiring non-volatile storage, such as boot code storage, data logging, and firmware updates. The device offers a minimum of 100,000 erase/program cycles per sector and data retention of 20 years.