MEMORY DATABOOK - Al Kossow's Bitsavers

• DYNAMIC RAM· MSM411 OOORS •• -----------------AC CHARACTERISTICSNote 1,2,3 (VCC = 5V ±1 0%, Ta = 0 to +70°C)MSM411000-10 MSM411000-12Parameter Symbol Unit NoteMIN MAX MIN MAXRefresh period tREF - 8 - 8 msRandom read/write cycle time tRC 200 - 230 - nsRead/write cycle time tRWC 235 - 255 - nsPage mode cycle time tpc 100 - 120 - nsAccess time from RAS tRAC - 100 - 120 ns 4,6Access time from CAS tCAC - 50 - 60 ns 5,6Output buffer turn-off delay tOFF 0 25 0 25 nsTransition time tT 3 50 3 50 ns--RAS precharge time tRP 90 - 100 - ns--RAS pulse width tRAS 100 10000 120 10000 ns-- RAS hold time tRSH 50 - 60 - nsCAS precharge time(Page mode cycle only)tcp 40 - 50 - nsCAS pulse width tCAS 50 10000 60 10000 nsCAS hold time tCSH 100 - 120 - nsRAS to CAS delay time tRCD 25 50 25 60 ns 7,8CAS and RAS set-up time tCRS 15 I- ! 20 - nsRow address set-up time tASR 0 - 0 - nsRow address hold time tRAH 15 - 15 - nsColumn address set-up time tASC 0 - 0 - nsColumn address hold time tCAH 20 - 20 - nsColumn address hold time from RAS, tAR 70 - 80 - nsRead command set-up time tRCS 0 - 0 - nsRead command hold time tRCH 0 - 0 - ns 10Write command hold time from RAS tWCR 80 - 95 - nsWrite command set-up time twcs 0 - 0 - ns 9Write command hold time tWCH 30 - 35 - ns194