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AURIX™ Forum Discussions

Jamber
Level 3
Level 3
25 replies posted 50 sign-ins First like received

Hi,

In TC3xx usermanual, it's said that all-0 and all-1 will be read with ECC errors. Does it mean a const array with 8 bytes consecutive 0xFF can't be read witout ECC error?

All-0,1 Error.png

Best regards

Jamber

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1 Solution
dw
Moderator
Moderator
Moderator
100 likes received 750 replies posted 10 likes given

Hi Jamber,

After erased Flash, you will get all-0, as a side effect, read will be with ECC errors.

If normal program Flash with all-1, it should be no ECC error.

 

dw

 

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3 Replies
ugo_8a
Employee
Employee
10 solutions authored 25 sign-ins 25 replies posted

No,  the trick is in the word "over-programming" this means that if you have some data , and you over-program it with all-1's without erasing it first, this would cause an ECC error. 

 

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Jamber
Level 3
Level 3
25 replies posted 50 sign-ins First like received

Hi, ugo_8a

Thank you, could you tell me what all-0 is?

And as usermanual said, by reading erased or over-programmed area causing ECC error is just an "side effect", so if reading a const array with 8 bytes consecutive 0xFF is not all-1 case, what's the really case of all-1, and all-0?

All-0,1 Error.png

Best regards

Jamber

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dw
Moderator
Moderator
Moderator
100 likes received 750 replies posted 10 likes given

Hi Jamber,

After erased Flash, you will get all-0, as a side effect, read will be with ECC errors.

If normal program Flash with all-1, it should be no ECC error.

 

dw

 

0 Likes