The correct model should be W25Q64BVDAIG.

The naming definition of Winbond w25q64 series spi flash is as follows:

W? Stands for Winbond Company, which is the prefix of the company.

25Q stands for serial flash memory.

64B indicates a capacity of 64M.

V represents the working voltage range (2.7v-3.6v)

Da? Represents package form (8-pin PDIP 300 mil)

I stands for the operating temperature range (industrial grade, -40 degrees to 85 degrees).

g？ Represents an environmental protection sign (lead-free, halogen-free, ROHS-compliant)

For the naming definition of IC class, strictly speaking, we should refer to the official specification. Generally speaking, there is a naming definition in the specification. If there is no naming definition, please find an agent or publishing house factory to provide it.

For the naming definition of W25Q64, please refer to the attached drawings or the specifications in the links below.

. com/data sheet-pdf/view/443804/WINBOND/w25q 64 bvd AIG . html