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TMS320F28P559SG-Q1: Why the 8KB data in flash is abnormal when power off during the erasing

Part Number: TMS320F28P559SG-Q1

Tool/software:

Hi team,

I ask this for my customer.

My customer will use Fapi_issueAsyncCommandWithAddress() to erase one sector one time, and during this operation, it may happen power off. 

And if power off happen, they find the data in 8KB will become abnormal, so they want to ask the min memory that the flash api to erase? I think it should not to erase one sector at the same time? 

BRs

Shuqing