I’ve noticed that the slow corner is the worst scenario for writing to a bit cell. In the slow corner, the transistors in the bit cell have weaker driving power and slower switching speeds compared to the normal or fast corners. When you try to write data into the bit cell, these slower transistors may struggle to charge or discharge the storage node within the necessary timeframe.
This can lead to timing problems and potential errors in data storage. Due to these speed and reliability issues, we can see why the slow corner is considered the most challenging condition for performing a successful bit cell write operation.