AT28C64-15DM/883 64K CMOS EPROM by Atmel. Organisation: 8K x 8-Bit Access time: 150 nS Package: 28-CERDIP Military grade item with an extended heat range of -55 to +125 degrees Centegrade. Download ATMEL AT28C64-15DM datasheet: Status: NOS (New Old Stock) ex leading aeroengine manufacturer. Topside markings: AT28C64150DM/883 RoHS compliant : na