XC4028XL-3BG256I Datasheet and XC4028XL-3BG256I manual

Manufacturer : Xilinx 

Packing : Plastic BGA 

Pins : 256 

Temperature : Min -40 °C | Max 100 °C

Size : 780 KB

Application : Field programmable gate array. 

XC4028XL-3BG256I PDF Download