UM3491

I pner-rrurrr.rrnv ----------l uM3497 I Melody Generator With f-1 Accompaniment i Features r 3V operatingvoltageforspeakerapplication. r 1 0 2 4 - n o 1me e m o r y ;u p t o 1 6 t u n e s . r D u a lt o n e m i x e do u t p u t ,2 i n d i v i d u ael x t e r n ael n v e l o p e circuils r R Co s c i l l a t owr i t h o n ee x t e r n arle s i s t o r r 3 1 p r o g r a m m o btl eo n e s( i n c l u d er e s t )f r o m C q - C t r 15 programmablteempos r 16 programmablteime segmentfsor notearrangement r N- programming I P u l s e: l g n a lo u t p u tw h e nm e l o d ye n d s r Low :riand-bycurrenr r Singlesongplayedrepeatedlyor auto stop r All songsplay'edrepe.,iedlyor auto stop General Description The UM3491 series comprisesmask-ROM-programme_d melody generatorswith accompaniment implemented through CMOS technology.They are d.esignedto play_ melodiesaccordingto previouslyprogrammedinformation. aremixedtogetherto generatesimultaneouosutput. The UM3491 seriesis intended for aoolicationssucn as t o y s ,d o o r b e l l sm, e l o d yc l o c k / t i m e r se,t c . The devicesalsoincludemelodyandaccompanimenwt hich Pin Configuration Block Diagram OEN MODE TEST 1 2 3 18 VDD 1 7 8D r o BD LP 4 15 L E s U M 3 4 9 1r a E N V ' I TRI BUSY o 7 r J MTO 1 2 ENV2 END vss E J i l oscl 1 0 osco eNo AUSY r€ST C€ &IOO€ LP TP16GEF MTI I F4:: PC87001 trfgfirr=+#= uM3497 AbsoluteMaximum Ratings* *Comments SupplyVoltage :....... A p p l i eVd o l t a g e a tn yP i n ...