标签: fm28v100

MigratingfromFM20L08toFM28V100AN-106MigratingfromFM20L08toFM28V100HowtoCreateaPCBforCompatibilityDESCRIPTIONTheFM20L08(128Kx8)andFM28V100(128Kx8)devicesareofferedinthe32-pinTSOP-Ipackage.Thepackagebodysizeis8.0x13.4mmandthepinpitchis0.5mm.Thetwodevicesarenotpincompatiblewitheachother,buttheyareverysimilar.Itispossibletodesignapcboardsuchthateitherdevicecanpopulatetheboard.PCBLAYOUTCONSIDERATIONSThetwopartshaveslightlydifferentpinassignments.Thedifferencesarepins6and9.TheFM20L08hasaDNUonpin6and/LVLonpin9.TheFM28V100hasCE2onpin6andNConpin9.Mostdesignsdonotusethe/LVLpin(FM20L08).Theboardmaybelayedoutsuchthatpin9isleftfloating.Manycontrolle……