MEMORY DATABOOK - Al Kossow's Bitsavers

------------------1. DYNAMIC RAM· MSM41464RS •AC CHARACTERISTICS(Recommended operating conditions unless otherwise noted.) Note 1,2,3Parameter Symbol UnitMSM41464- MSM41464- MSM41464-10 12 15Min. Max. Min. Max. Min. Max.NotesRefresh period tREF ms 4 4 4Random read or writecycle time tRC ns 200 230 260Read-write cycle time tRWC ns 275 320 360Page mode cycle time tpc ns 100 120 145Access time from RAS tRAC ns 100 120 150 4,6Access time from CAS tCAC ns 50 60 75 5,6Output buffer turn-offdelaytOFF ns 0 30 0 35 0 40Transition time tT ns 3 50 3 50 3 50RAS precharge time tRP ns 90 100 100RAS pulse width tRAS ns 100 10J.Ls 120 10J.Ls 150 10J.LsRAS hold time tRSH ns 50 60 75CAS precharge time(Page mode cycle only)tcp ns 40 50 60CAS pulse width tCAS ns 50 10J.Ls 60 10J.Ls 75 10J.LsCAS hold time tCSH ns 100 120 150RAS to CAS delay time tRCD ns 22 50 22 60 25 75 7,8CAS to RAS set-up time tCRS ns 20 25 30Row address set-uptimetASR ns 0 0 0Row address hold time tRAH ns 12 12 15Column address set-uptimetASC ns 0 0 0Column address holdtimetCAHns 15 15 20Read command set-uptime tRCS ns 0 0 0Read command holdtime tRCH ns 0 0 0 10Write command set-uptimetwcs ns -5 -5 -5 9167