How to interface external flash with imxrt117x controlller

[Jeevan]

Hi team,

We are using imxrt117x controller and an external flash.

What are the pins required and interface required to interface the above controller with external flash?

Is internal flash present in imxrt117x controller?

[EdwinHz]

Hi @Jeevan,

The RT1170 does not contain internal flash. It requires the usage of external flash connected via the FlexSPI controller. Please look into Chapter 30 FlexSPI Controller (FLEXSPI) from the RT1170 reference manual for more information about how this module works and how to connect it to an external flash. Specifically, section 30.3 "Functional description" and also Table 10-1. "ROM Bootloader Peripheral PinMux" for rows FlexSPI1 NOR/NAND or FlexSPI2 NOR/NAND. If using an octal flash, you can also refer to this Knowledge Base article: https://community.nxp.com/t5/i-MX-RT-Knowledge-Base/RT1170-Octal-flash-enablement/ta-p/1498369

And finally, you can also refer to the MIMXRT1170-EVKB's schematics for reference on what pins are used to interface an external flash with the FlexSPI module. You can download the schematics here: https://www.nxp.com/webapp/Download?colCode=MIMXRT1170-EVKB-DESIGNFILES

BR,
Edwin.