Questions about s32k144 flash

kmh48301 — Wed, 16 Sep 2020 01:14:48 GMT

I can't post to s32k board due to website problem. (label is not listed)

sorry for posting here.

1. Mass Erase is executable when MEEN field is in enabled state.

(when unsecured always executable)

But when secured state, external debugger can't be connected to board.

So how can I do the Mass Erase?

Mass Erase is supposed to be executed by external debugger.

2. 'Erase All Blocks', 'Erase All Blocks unsecure', 'Read 1s All Blocks',

'Verify backdoor access Key' <<

those 4 commands release the mcu security. So When those commands

are complete, FSEC[SEC] field is unsecured.

So, Assume Bad situation

FSEC[SEC] in Flash Configuration Field is Secured and

FSEC[MEEN] in Flash Configuration Field is also Disabled.

To do a mass erase, Can I use those '4 commands'?

I'm wondering those ' 4 commands' release the mcu security regardless of

P-Flash protection.

Thanks

Best regards,

Phillip

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