Hi MPS experts,
We are using EVQ7228 evaluation board.
When we use the evaluation tool of Virtual Bench Pro 4.0, the value of Remaining Write Cycles in NVM may change from NVM=1 to NVM=2.
I don’t think the number of NVM cycles will ever change to 2, so is there a reason why this phenomenon occurs?
Best Regards,
Toru Kimura
Hello Toru,
Just to clarify, are you saying that at first you had 1 NVM write cycle left, and after writing you see 2?
This is definitely an odd thing to see and there is no way the GUI in this specific scenario would reflect reality if this truly were the case.
To further clarify on the programming nature of the MPQ7228, this is an OTP (One-Time Programmable) IC, meaning that you can only write to NVM (Non-Volatile Memory) once.
You can check the bits in the following registers to verify the programmed stages are burned in (shown in grey as they can be read/written via OTP):
In terms of the GUI, even after opening and closing, does this issue persist after verifying that this IC was programmed?
Let me know.
Best,
Krishan
Hello Krishan,
I’m sorry to late my answer.
This an odd thing occurs for items that have had 1 NVM write cycle left.
And it occurs if I amd closing and re-opening the GUI too.
But I found a countermeasure.
Scanning from the New Device tab and reconfiguring the MPQ7228 seems to fix this an add thing.
Thanks for letting us know. I’ll talk about this to our software team in charge of the GUI and make sure this gets patched in the next system update.
