MEMORY DATABOOK - Al Kossow's Bitsavers

________________........ DYNAMIC RAM ·MSM411000RS •AC CHARACTERISTICS (CONT.)MSM411000-10 MSM411000-12Parameter Symbol Unit NoteMIN MAX MIN MAXWrite command pulse width twp 30 - 35 - nsWrite command to RAS lead time tRWL 40 - 40 - nsWrite command to CAS lead time tCWL 40 - 40 - nsData-in set-up time tDS 0 - 0 - nsData-in hold time tOH 30 - 35 - nsData-in hold time from RAS tOHR 80 - 95 - nsCAS to WE delay tcwo 40 - 40 - ns 9RAS to WE delay tRWD 90 - 100 - ns 9Read command hold timereference to RASRAS to CAS set-up time(CAS before RAS)RAS to CAS hold time(CAS before RAS)CAS active delay from RASprechargeCAS precharge time(CAS before RAS)Read/write cycle(Refresh counter test)RAS pulse width(Refresh counter test)CAS precharge time(Refresh counter test)tRRH 20 - 20 - ns 10tFCS 20 - 25 - nstFCH 30 - 30 - nstRPC 20 - 20 - nstCPR 20 - 25 - nstRTC 355 - 385 - ns 11tTRAS 255 10000 275 10000 ns 11tCPT 50 - 60 - ns 11Read/write cycle time (Page mode) tpRWC 135 - 145 - ns195