NRF52840 External Memory support for 2GB/4GB/8GB

[Vayu Vega]

Dear Team,

We are using NRF52840 chipset for our development. Our requirement is External memory up to 2GB/4GB/8GB. 

1. Does Nrf52840 chipset support eMMC high frequency clock ? 

2. Can you suggest best compatible memory part with driver support?

3. Do we tested external memory with QSPI interface ?

Waiting for your response.

[Einar Thorsrud]

Hi,

1. Does Nrf52840 chipset support eMMC high frequency clock ? 

No.

3. Do we tested external memory with QSPI interface ?

External NOR flash is supported and tested with the QSPI peripheral, and that is the only form of external memory that is supported.

[Vayu Vega]

Hello Einar 

Can you suggest External memory up to 2GB/4GB/8GB for nRF52840 chipset using QSPI ? 

 

[Einar Thorsrud]

Hi,

I am not aware of any such large NOR flash devices (though it may exist at a high cost). If you need to store a lot of data perhaps you could interface an SD card or similar via SPI (not QSPI).

[Vayu Vega]

Hello Einar,

Thank you for quick response.

Due to size constraints SD card is difficult to place.

Can we use “MT29F8G01ADBFD12-AAT:F” NAND memory for storage purpose ?

[Einar Thorsrud]

The nRF only supports NOR flash directly. If you need NAND flash that needs to be handled by a separate controller.