Some of the customer notifications contain information on replacement parts.
The customer notification can be found at:
Under Step 2 : Product Category, select Mature Products => XC400 under Step 3 Product => then Customer Notification under Step 4 as Doc Type.
Xilinx does not guarantee that the recommended replacements area drop-in replacement.
You should double check the pinouts and ensure that they are equivalent.
Parts covered by the Answer Record: