Kinetis KL03 - Program retention after power cycle

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Kinetis KL03 - Program retention after power cycle

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armaram
Contributor III

Hi,

My #kl03 doesn't retain program after power cycle. We must reprogram the MCU in order to continue working. We are using the PE Micro Multilink FX cable to program the MCU.

Can anyone pls help?

Thanks,

Arvind

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gnichimohamed
Contributor III

Check if nmi_b pin is low or pulled down low then you need to disable nmi.

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miduo
NXP Employee
NXP Employee

Hi,

Please let me know what board you used and what software used? I mean the flash programming method. What steps you had done and if any error reported?

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armaram
Contributor III

It's a custom hardware board. We use

-KSDK1.3.1.

-Programming cable - PEMicro multilink fx

-SWD port

Pls let me know if you need any further information.

No errors reported. Only that we have to reprogram the MCU everytime we do a power cycle. We want the program to be retained even when power is turned OFF/ON.

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gnichimohamed
Contributor III

Check if nmi_b pin is low or pulled down low then you need to disable nmi.

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armaram
Contributor III

Yes, in fact that was the problem. One of the NXP guys helped us out but I missed to post the update. Thank you though!

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armaram
Contributor III

@Fang Li any help would be great! 

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