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MSP432E401Y: SPI NOR FLASH memory

albgarc2014
Genius 3520 points
Part Number: MSP432E401Y

Hi TI, 

I have connected to the MSP432E401Y a flash memory with the following signals:

PQ3: MISO
PQ2: MOSI
PQ0: CLK
PP4: CS

It worked perfectly!

Now I need to replace the SD with a moria SPI flsah chip.
My intention is to use the same signals used above with the SD. However in pinmux when I add the SSI peripheral, with the same signals I don't have the option to select PP4 as CS (I only have the options PQ1 and PF2).

I can keep the same signal map as I did before with the SD memory:
PQ3: MISO
PQ2: MOSI
PQ0: CLK
PP4: CS

Or should I use PQ1 or PF2 for CS (as pinkux allows me to do)?

  • +1
    TI__Guru**** 191886 points

    Hi,

      I'm a bit confused. PP4 does not have alternate function for SPI CS. 

    I suppose you are using SSI3 module. You can only use either PQ1 or PF2 for CS. If you must use PP4 then you can configure PP4 in GPIO mode and you can manually control the CS via your application.