Connecting 8MB Flash and 8MB PSRAM to one FlexSPI[portA/B] interface

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Connecting 8MB Flash and 8MB PSRAM to one FlexSPI[portA/B] interface

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Contributor I

Hi,

We are developing custom board with IMXRT101x uC. Can we connect 8MB(8-pin SOIC) flash and 8MB(8-pin SOIC) PSRAM(ESPRAM or IPUS PSRAM) to FlexSPI portA[0:3] and port portB[3:0] respectively? We want access both the interface together.

if yes, How PSRAM will be access and what is base address of PSRAM?

Regards,

Bharat 

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NXP TechSupport
NXP TechSupport

Hi Bharat, 

Is not possible to connect two different types of memories to the same FlexSPI interface. If your application needs an external RAM then I would suggest you migrate to the RT1020. The RT1020 besides the FlexSPI interface it has an interface called SEMC (Smart External Memory Controller) which supports external RAM memories. 

Have a great day,

Victor

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Contributor I

Thank You Vector.

Got it.

Regards,

Bharat

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