Flash operation error on LPC11U66JBD48

Mr_Damian — Mon, 15 Jul 2024 07:57:56 GMT

Hi everyone,

I'm using the above micro and I have a feeling that I have written to a memory that I should of not to and this is what I'm getting:

I was wondering if someone had a similar issue and managed to resolve it.

Best Damian

Re: Flash operation error on LPC11U66JBD48

Alice_Yang — Tue, 16 Jul 2024 01:52:37 GMT

Hello @Mr_Damian

I suggest you go into ISP mode, then using Flash Magic erase all flash.

It is possible to download an image into the flash on the target that will then prevent any further debug access or connections. The classic cases of this are:

The image contains code that sets the MCU clocks up "incorrectly".
The image contains code that enables a watchdog timer.
The image contains code that puts the MCU into a very low power mode.
The image contains code that "switches off" some, or all of the multiplexed debug pins (JTAG/SWD).

About detail you can also refer to thread: https://community.nxp.com/t5/LPCXpresso-IDE-FAQs/Regaining-debug-access-to-target-MCU/m-p/473923

Alice

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Flash operation error on LPC11U66JBD48

Re: Flash operation error on LPC11U66JBD48