ES29DS640FT-70TGI 4Mbit(512Kx 8/256K CMOS Volt-only, Boot Sector Flash Memory
ES29DS640FT-70WC 16Mbit(2M 8/1M CMOS Volt-only, Boot Sector Flash Memory
ES29DS640FT-80RTG 8Mbit(1M 8/512K CMOS Volt-only, Boot Sector Flash Memory
ES29DS640FT-90RTG 4Mbit(512Kx 8/256K CMOS Volt-only, Boot Sector Flash Memory