STM32WL33 QSPI VS SPI

[CEagl.1]

Hi 
I am hoping someone might be able to help me with some calculations.

I am assessing the STM32WL33 for use in a product.
One of the peripherals will be an EEPROM, an M95P32.

The EEPROM supports Dual/Quad Output (Read) However the STM32 does not appear to have a hardware QSPI.

So i am trying to determine whether to implement a Quad Read in software (bitbanging).

Can anyone help me to understand the max data transfer on 4 wire SPI using hardware, Vs that of Quad Read using software.

 

Many thanks 

[STTwo-32]

Hello @CEagl.1 

I suggest you test both of them, but I personally think that the SPI will do better since it does not depend on the overhead of software execution and the maximum speed is limited by the GPIO toggling rate and the processing speed of the microcontroller.

Best Regards.

STTwo-32