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M95256-D-CS3G/A 数据表(PDF) 35 Page - STMicroelectronics |
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M95256-D-CS3G/A 数据表(HTML) 35 Page - STMicroelectronics |
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35 / 48 page ![]() M95256-DR, M95256, M95256-W, M95256-R DC and AC parameters Doc ID 12276 Rev 11 35/48 Table 18. AC characteristics, new M95256-W, device grade 6 Test conditions: VCC = 2.5 to 5.5 V, TA = -40 to 85 °C CL = 100 pF New products (process K, preliminary information) CL = 30 pF Unit Symbol Alt. Parameter Min. Max. Min. Max. Min. Max. fC fSCK Clock frequency D.C. 5 D.C. 10 D.C. 20 MHz tSLCH tCSS1 S active setup time 90 30 15 ns tSHCH tCSS2 S not active setup time 90 30 15 ns tSHSL tCS S deselect time 100 40 20 ns tCHSH tCSH S active hold time 90 30 15 ns tCHSL S not active hold time 90 30 15 ns tCH (1) tCLH Clock high time 90 45 20 ns tCL (1) tCLL Clock low time 90 45 20 ns tCLCH (2) tRC Clock rise time 122 µs tCHCL (2) tFC Clock fall time 122 µs tDVCH tDSU Data in setup time 20 10 5 ns tCHDX tDH Data in hold time 30 10 10 ns tHHCH Clock low hold time after HOLD not active 70 30 15 ns tHLCH Clock low hold time after HOLD active 40 30 15 ns tCLHL Clock low setup time before HOLD active 00 0 ns tCLHH Clock low setup time before HOLD not active 00 0 ns tSHQZ (2) tDIS Output disable time 100 40 20 ns tCLQV tV Clock low to output valid 60 40 20 ns tCLQX tHO Output hold time 00 0 ns tQLQH (2) tRO Output rise time 50 40 20 ns tQHQL (2) tFO Output fall time 50 40 20 ns tHHQV tLZ HOLD high to output valid 50 40 20 ns tHLQZ (2) tHZ HOLD low to output High-Z 100 40 20 ns tW tWC Write time 555 ms 1. tCH + tCL must never be less than the shortest possible clock period, 1 / fC(max) 2. Value guaranteed by characterization, not tested in production. |
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