27C64 CMOS Eprom various manufacturers NEW/NOS Eproms. 8192-word x 8-bit UV Erasable and programmable read only memory 8Kx8 (64K) 28 pin Dip-28 package. 27C64 is a high-speed 64K UV erasable and electrically reprogrammable CMOS EPROM, ideally suited for applications where fast turnaround, pattern experimentation and low power consumption are important requirements, Low CMOS power consumption. These are used in many older 80’s, 90’s and newer game boards and contact us if you need programming. Most are 200ns and faster.