UM23128A

(l)UMO UM23128/UM23128A 16K X 8 NMOS ROM Features EPROM pin compatible 16,384 x 8 bit organization single +5 volt supply Access time - 200/300/450 ns (max) Totally static operation Completely TTL compatible 28 pin JEDEC approved pinout UM23128A- automatic power down (CE) output enable function (OEl one programmable chip select (CS) UM23128 non power down version three programmable chip selects (CS) Three state outputs for wire-OR expansion EPROMS accepted as program data input Description The UM23128 and UM23128A high performance Read Only Memories are organized 16,384 words by 8 bits with access times from 200 ns to 450 ns. The ROMs are'designed to be compatible with all microprocessor and similar applications where high performance, large bit storage and simple interfacing are important design considerations. Both ROMs conform to the JEDEC approved pinout for 28 pin 128K ROMs. The UM23128 offers the simplest operation (no power down.) I...