5.49 Volatile Status Register Write Enable (VSWREN)

The Volatile Status Register Write Enable (VSWREN, 50H) instruction must be executed prior to writing volatile values using the Write Status Register 1/2/3 commands.

To execute a VSWREN operation, the host drives CE# low, issues the VSWREN command (50H) in SPI or QPI mode, and then drives CE# high. See Figure 5-43 and Figure 5-44 for the VSWREN instruction sequence.