They have some difference in the internal wafer fab. CY7C63723 is no longer being sold and is obsolete. Even if you already possess that part, we strongly recommend to use CY7C63723C.
- Madhu Sudhan
As far as I know，the cy7c63723c is also no longer being sold and more expensive.I have some stock of cy7c63723 on my hand.But I wonder if there is a clear flaw in cy7c63723.