You can find it in package TQFP.It is adopted to store data in CMOS.It is recommended that the operating temperature be greater than -40°C.A temperature less than 125°C should be used for operation.
XC2C256-6TQ144CR02 Features
TQFP package
XC2C256-6TQ144CR02 Applications
There are a lot of Xilinx XC2C256-6TQ144CR02 CPLDs applications.