Flash operation error on LPC11U66JBD48

[Mr_Damian]

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 

[Alice_Yang]

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  

BR

Alice