Wi-Fi® + Bluetooth® + 802.15.4のトピックRe: FlexSPI support for AS5F flash memory chip

FlexSPI support for AS5F flash memory chip

AndreiH — Mon, 29 Sep 2025 08:39:37 GMT

Hi,

I was wondering if the FlexSPI driver supports flash chips like AS5F18G04SND-10LIN in QSPI mode, to be used with ZephyrRTOS.

Is there any example application which might help on configuring such a flash chip (e.g. board DTS/app overlay file example) ?

Best regards.

Re: FlexSPI support for AS5F flash memory chip

DanielRuvalcaba — Tue, 30 Sep 2025 20:11:17 GMT

Hi,

Could you please tell me what device are you using?

Regards,
Daniel.

Re: FlexSPI support for AS5F flash memory chip

AndreiH — Wed, 01 Oct 2025 06:55:57 GMT

Hi Daniel,

I'm using a NXP RW612 board.

Best regards.

Re: FlexSPI support for AS5F flash memory chip

DanielRuvalcaba — Thu, 02 Oct 2025 18:42:53 GMT

Hi,

I would recommend checking how it is implemented for the FRDM-RW612 and the RD-RW612-BGA. These two boards have different flash part numbers, and they are supported in Zephyr.

By the way, the RW61x FlexSPI external flash interface supports up to 128 MB.

Regards,

Daniel.

Re: FlexSPI support for AS5F flash memory chip

AndreiH — Fri, 03 Oct 2025 11:28:00 GMT

Hi Daniel,

I would like to know what options do I have if I want to interface something like 1GB of external memory storage. Maybe another type of board or controller with another interface which might be able to achieve this capacity? or maybe even with a card reader?

Best regards.

Re: FlexSPI support for AS5F flash memory chip

DanielRuvalcaba — Fri, 03 Oct 2025 21:37:50 GMT

Hi,

Unfortunately, I don't think the RW61x will meet your requirements. Using a standard SPI memory via SPI commands might be the only viable option to connect a 1GB memory. But features like XIP will not be supported.

On the other hand, you might want to consider the RT family, such as the RT1170. This MCU supports SDIO master mode, allowing you to connect SD cards.
Keep in mind that these MCUs are not hostless wireless solutions—you’ll need an external module to add Wi-Fi/Bluetooth capabilities.

Regards,

Daniel.