文档sprui33b中3.12.9.1介绍的原因如下:这句话应该如何理解?
When the target flash is erased, it reads as all 1's. This state is called 'blank.' The erase function must be
executed before programming. The user should NOT skip erase on sectors that read as 'blank' because
these sectors may require additional erasing due to marginally erased bits columns. The FSM provides an
“Erase Sector” command to erase the target sector. The erase function erases the data and the ECC
together. This command is implemented by the following Flash API function:
即使sector读出全部0xFFFF,ECC区域可能不是为空?