The 28LV010 from Data Device Corporation is a Space Qualified Memory with Storage Capacity 1 Mb, Read Access Time 200 to 250 ns, Write Access Time 15 ms, Radiation Dose 10 krad, 25 krad, 40 krad, 60 krad, Mass 2.69 gms, 7.38 gms, 10.97 gms. More details for 28LV010 can be seen below.