Dynamic Shift Registers - Bitsavers - Trailing-Edge

MM4220/ MM5220 1024-bit read only memorygeneral descriptionThe MM4220/MM5220 is a 1024-bit static readonly memory. It is a P-channel enhancement modemonolithic MOS integrated circuit utilizing lowthreshold voltage technology. The device is a nonvolatilememory organized as 12S-S-bit words or256-4-bit words. Programming of the memory contentsis accomplished by changing one mask duringthe device fabrication. Customer programs may besupplied in a tape, card, or pattern selection format.features• Bipolar compatibility• High speed operation 500 ns typblock and connection diagrams• Static operation• Common data busing• Chip enable output control.applications• Code conversion• Random logic synthesis• Table look-up• Character generators• Micro-programming.ROMsno clocks requiredoutput wire ANDcapability1It'IITSILSI) A,SENSE AMPLIfiERSOUTPUTSB,Dual-In-Line PackageA,A,B,B,B,B,B,B,!N'UrAl ..INPUT A2IN'UTA,v ••" NeOUTPUT .1 'NPUT A.OUTPuralounUT B3OUTPUT 8.OUTPUT B!"IN'UT~INPUT .,B, OUTPUlls" MODECONTROLOUTPUT',v ••" " CM.,ENABLEOUTPUTB8 INPUT "-~----~--~ ~~------ ENABLEMODE CONTAOl-----L...FCHIP v"" " NeTOI'VIEWtypical application128-8 Bit ROM Showing TTL Interface-'2V_____ ~------------~-..... .,, A • ..t CHI' ..~NAILEt MODE..CONTROLV ••..A, ..MM4220/MM5Z20.. B,'-IOMll10 OR OMAn . A,'"A,AoTTL GATES