Can't change QE bit in Status Register of W25Q64

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1

Hello,
I have a W25Q64JVSIQ. It is configured in Quad SPI mode by default. I want to change the Quad Enable (QE) bit of the Status Register from 1 to 0. But when I try to do so, it fails. I want to use the IC in Standard SPI mode. How can I do it?

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From section 7.1.10 of the Winbond datasheet:

Quad Enable (QE) – Volatile/Non-Volatile Writable
The Quad Enable (QE) bit is set to 1 by default in the factory, therefore the device supports Standard/Dual 
SPI as well as Quad SPI after power on. This bit cannot be reset to 0.

Note: QE bit is set to a 0 state, factory default for part numbers with ordering options “IM; please see 
W25Q64JV-DTR data sheet.
4

Thanks for the info. I read the datasheet and found that the IC can work in Standard SPI mode regardless of the QE bit in Status register.

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