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CMS3216LAH 数据表(PDF) 17 Page - FIDELIX |
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CMS3216LAH 数据表(HTML) 17 Page - FIDELIX |
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17 / 46 page  Rev0.2, Aug. 2006 CMS3216LAx-75Ex AC Characteristics ns 10 tCLKS2 ns 7 tHZ(3) CL=3 ns 8 tHZ(2) CL=2 ns 15 tRRD Active Banka to Active Bankb Command ns 20 tRP Precharge Command Period ns 80 tRFC Auto Refresh Period ms 64 tREF Refresh Period(2048 rows) ns 20 tRCD Active to Read/Write Delay ns 80 tRC Active to Active Command Period ns 120000 48 tRAS Active to Precharge Command ns - tHZ(1) CL=1 Data High Impedance Time[25.] ns 1.0 tCMH /CS, /RAS, /CAS, /WE, /DQM Hold Time to Clock ns 2.0 tCMS /CS, /RAS, /CAS, /WE, /DQM Setup Time to Clock ns 1.0 tCDH Data In Hold Time to Clock ns 2.0 tCDS Data In Setup Time to Clock ns 2.5 tOH Output Hold Time from Clock ns - tAC(1) CL=1 ns 8 tAC(2) CL=2 ns 7 tAC(3) CL=3 Clock Access Time tCK 1 tBDL Last data-in to burst STOP command[38.] tCK 2 tDPL Data-in to PRECHARGE command[41.] ns tWR+tRP tDAL Data-in to ACTIVE command[40.] tCK 0 tDWD WRITE command to input data delay[38.] tCK 2 tDQZ DQM to data high-impedance during READs[38.] tCK 0 tDQM DQM to data mask during WRITEs[38.] tCK 0 tDQD DQM to input data delay[38.] tCK 1 tPED CKE to clock enable or power-down exit setup mode[39.] tCK 1 tCKED CKE to clock disable or power-down entry mode[39.] tCK 1 tCCD READ/WRITE command to READ/WRITE command[38.] ns 80 tXSR Exit Self Refresh to Active Command[37.] ns 15 tWR Write Recovery Time[36.] tCK 2 tWR Write Recovery Time[35.] ns 1.2 0.5 tT Transition Time[34.] ns 1.0 tCKH CKE Hold Time to Clock ns 2.0 tCKS CKE Setup Time to Clock ns 1.0 tCAH Address Hold Time to Clock ns 2.0 tCAS Address Setup Time to Clock ns 2.5 tCL Clock Low Time ns 2.5 tCH Clock High Time ns 7.5 tCLKS3 Clock Period[33.] Max Min Parameter Units -75 Symbol AC Characteristics |
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