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5 MOSEL VITELIC V53C16258H V53C16258H Rev. 3.8 November 1999 AC Characteristics TA = 0°C to 70°C, VCC = 5 V ± 10%, VSS = 0V unless otherwise noted AC Test conditions, input pulse levels 0 to 3V # Symbol Parameter 25 (100 MHz) 30 35 40 45 50 Unit Notes Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. 1 tRAS RAS Pulse Width 25 75K 30 75K 35 75K 40 75K 45 75K 50 75K ns 2 tRC Read or Write Cycle Time 45 60 70 75 80 90 ns 3 tRP RAS Precharge Time 15 20 25 25 25 30 ns 4 tCSH CAS Hold Time 25 30 35 40 45 50 ns 5 tCAS CAS Pulse Width 4 5 6 7 8 9 ns 6 tRCD RAS to CAS Delay 10 17 12 20 13 24 15 28 18 32 19 36 ns 4 7 tRCS Read Command Setup Time 0 0 0 0 0 0 ns 8 tASR Row Address Setup Time 0 0 0 0 0 0 ns 9 tRAH Row Address Hold Time 4 5 6 7 8 9 ns 10 tASC Column Address Setup Time 0 0 0 0 0 0 ns 11 tCAH Column Address Hold Time 4 5 5 5 6 7 ns 12 tRSH (R) RAS Hold Time (Read Cycle) 7 9 10 10 10 10 ns 13 tCRP CAS to RAS Precharge Time 5 5 5 5 5 5 ns 14 tRCH Read Command Hold Time Referenced to CAS 0 0 0 0 0 0 ns 5 15 tRRH Read Command Hold Time Referenced to RAS 0 0 0 0 0 0 ns 5 16 tROH RAS Hold Time Referenced to OE 4 6 7 8 9 10 ns 17 tOAC Access Time from OE 8 10 11 12 13 14 ns 12 18 tCAC Access Time from CAS 8 10 11 12 13 14 ns 6, 7, 14 19 tRAC Access Time from RAS 25 30 35 40 45 50 ns 6, 8, 9 20 tCAA Access Time from Column Address 13 16 18 20 22 24 ns 6, 7, 10 21 tLZ OE or CAS to Low-Z Output 0 0 0 0 0 0 ns 16 22 tHZ OE or CAS to High-Z Output 0 5 0 5 0 6 0 6 0 7 0 8 ns 16 23 tAR Column Address Hold Time from RAS 19 23 25 30 35 40 ns 24 tRAD RAS to Column Address Delay Time 8 13 9 14 10 17 12 20 13 23 14 26 ns 11 25 tRSH (W) RAS or CAS Hold Time in Write Cycle 7 9 10 10 10 10 ns 26 tCWL Write Command to CAS Lead Time 5 7 8 10 13 14 ns 27 tWCS Write Command Setup Time 0 0 0 0 0 0 ns 12, 13 28 tWCH Write Command Hold Time 4 5 5 5 6 7 ns |
