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M95256 数据表(PDF) 28 Page - STMicroelectronics |
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M95256 数据表(HTML) 28 Page - STMicroelectronics |
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28 / 39 page ![]() M95256, M95128 28/39 Table 20. AC Characteristics (M95xxx-W, Device Grade 6) Note: 1. tCH + tCL must never be less than the shortest possible clock period, 1 / fC(max) 2. Value guaranteed by characterization, not 100% tested in production. Test conditions specified in Table 11. and Table 9. Symbol Alt. Parameter Min. Max. Unit fC fSCK Clock Frequency D.C. 5 MHz tSLCH tCSS1 S Active Setup Time 90 ns tSHCH tCSS2 S Not Active Setup Time 90 ns tSHSL tCS S Deselect Time 100 ns tCHSH tCSH S Active Hold Time 90 ns tCHSL S Not Active Hold Time 90 ns tCH 1 tCLH Clock High Time 90 ns tCL 1 tCLL Clock Low Time 90 ns tCLCH 2 tRC Clock Rise Time 1 µs tCHCL 2 tFC Clock Fall Time 1 µs tDVCH tDSU Data In Setup Time 20 ns tCHDX tDH Data In Hold Time 30 ns tHHCH Clock Low Hold Time after HOLD not Active 70 ns tHLCH Clock Low Hold Time after HOLD Active 40 ns tCHHL Clock High Set-up Time before HOLD Active 60 ns tCHHH Clock High Set-up Time before HOLD not Active 60 ns tSHQZ 2 tDIS Output Disable Time 100 ns tCLQV tV Clock Low to Output Valid 60 ns tCLQX tHO Output Hold Time 0 ns tQLQH 2 tRO Output Rise Time 50 ns tQHQL 2 tFO Output Fall Time 50 ns tHHQV tLZ HOLD High to Output Valid 50 ns tHLQZ 2 tHZ HOLD Low to Output High-Z 100 ns tW tWC Write Time 5 ms |
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