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V53C16258HK45 Datasheet(PDF) 7 Page - Mosel Vitelic, Corp |
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V53C16258HK45 Datasheet(HTML) 7 Page - Mosel Vitelic, Corp |
7 / 20 page 7 MOSEL VITELIC V53C16258H V53C16258H Rev. 3.8 November 1999 Notes: 1. ICC is dependent on output loading when the device output is selected. Specified ICC (max.) is measured with the output open. 2. ICC is dependent upon the number of address transitions. Specified ICC (max.) is measured with a maximum of two transitions per address cycle in EDO Page Mode. 3. Specified VIL (min.) is steady state operating. During transitions, VIL (min.) may undershoot to –1.0 V for a period not to exceed 20 ns. All AC parameters are measured with VIL (min.) ≥ VSS and VIH (max.) ≤ VCC. 4. tRCD (max.) is specified for reference only. Operation within tRCD (max.) limits insures that tRAC (max.) and tCAA (max.) can be met. If tRCD is greater than the specified tRCD (max.), the access time is controlled by tCAA and tCAC. 5. Either tRRH or tRCH must be satisified for a Read Cycle to occur. 6. Measured with a load equivalent to one TTL input and 50 pF. 7. Access time is determined by the longest of tCAA, tCAC and tCAP. 8. Assumes that tRAD ≤ tRAD (max.). If tRAD is greater than tRAD (max.), tRAC will increase by the amount that tRAD exceeds tRAD (max.). 9. Assumes that tRCD ≤ tRCD (max.). If tRCD is greater than tRCD (max.), tRAC will increase by the amount that tRCD exceeds tRCD (max.). 10. Assumes that tRAD ≥ tRAD (max.). 11. Operation within the tRAD (max.) limit ensures that tRAC (max.) can be met. tRAD (max.) is specified as a reference point only. If tRAD is greater than the specified tRAD (max.) limit, the access time is controlled by tCAA and tCAC. 12. tWCS, tRWD, tAWD and tCWD are not restrictive operating parameters. 13. tWCS (min.) must be satisfied in an Early Write Cycle. 14. tDS and tDH are referenced to the latter occurrence of CAS or WE. 15. tT is measured between VIH (min.) and VIL (max.). AC-measurements assume tT = 3 ns. 16. Assumes a three-state test load (5 pF and a 500 Ohm Thevenin equivalent). 17. An initial 200 µs pause and 8 RAS-containing cycles are required when exiting an extended period of bias without clocks. An extended period of time without clocks is defined as one that exceeds the specified Refresh Interval. 18. One CBR refresh or complete set of row refreah cycles must be completed upon exiting Self Refreah Mode. 54 tOEP OE High Pulse Width 4 5 8 10 10 10 ns 55 tT Transition Time (Rise and Fall) 1.5 50 1.5 50 1.5 50 1.5 50 1.5 50 1.5 50 ns 15 56 tREF Refresh Interval (512 Cycles) 8 8 8 8 8 8 ms 17 Optional Self Refresh 57 tRASS RAS Pulse Width During Self Refresh 100 100 100 100 100 100 µs 18 58 tRPS RAS Precharge Time During Self Refresh 100 100 100 100 100 100 ns 18 59 tCHS CAS Hold Time Width During Self Refresh 100 100 100 100 100 100 ns 18 60 tCHD CAS Low Time During Self Refresh 100 100 100 100 100 100 µs 18 # Symbol Parameter 25 (100 MHz) 30 35 40 45 50 Unit Notes Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. AC Characteristics (Cont’d) |
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