This article covers the NXP i.MXRT500 MCU family devices.
The RT500 does not come with internal flash but with external flash connected to the FlexSPI bus, only. The external FlexSPI controller allows to connect several different flash types like QSPI, HyperFlash and Octaflash. Furthermore, the external flash can be connected to different pin / ports of the FlexSPI controller which makes a auto-detection very difficult thus a out-of-the-box solution which works for all setups is kind of impossible. For that reason, the J-Link software supports the evaluation board setup, only. Other setups may work but without any warranty or guarantee from SEGGER. If you are working with a different setup and looking for support for this setup, please get in touch with SEGGER.
Supported QSPI setup
- J-Link Software: >= V6.82a
- Hardware: NXP X-MIMXRT595-EVK (RevC1)
- Flash: MX25UW51345GXDI00 (octaflash) connected to FlexSPI port A1
|Signal Name||GPIO name||IO function|
NOTE: The BOOT ROM of the RT500 seems to activate the octa mode under some circumstances. In order to bring the flash into a proper / known state, the J-Link flashloader resets the QSPI flash using the nRESET pin of the flash which is connected to PIO4_05 on the evaluation board. On some preliminary boards, the reset pin was connected to PIO4_24. These boards do not work with the default flashloader.
The application toggles the red LED on the MIMXRT595-EVK Rev C1 evaluation board. The application is linked into the external flash. It includes a valid boot header so it also runs stand-alone.
- J-Link software: V6.82a
- Embedded Studio: V4.50
- Hardware: NXP MIMXRT595-EVK (Rev C1)
- Link: File:NXP MIMXRT595-EVK-RevC1 QSPI ES.zip