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M95128-R 数据表(PDF) 31 Page - STMicroelectronics |
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M95128-R 数据表(HTML) 31 Page - STMicroelectronics |
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31 / 48 page ![]() Table 21. AC characteristics (M95128-DF, device grade 6) Test conditions specified in Table 11 Symbol Alt. Parameter VCC ≥ 1.7V VCC ≥ 2.5V VCC≥ 4.5V Unit Min. Max. Min. Max. Min. Max. fC fSCK Clock frequency - 5 - 10 - 20 MHz tSLCH tCSS1 S active setup time 60 - 30 - 15 - ns tSHCH tCSS2 S not active setup time 60 - 30 - 15 - ns tSHSL tCS S deselect time 90 - 40 - 20 - ns tCHSH tCSH S active hold time 60 - 30 - 15 - ns tCHSL - S not active hold time 60 - 30 - 15 - ns tCH (1) tCLH Clock high time 80 - 40 - 20 - ns tCL(1) tCLL Clock low time 80 - 40 - 20 - ns tCLCH (2) tRC Clock rise time - 2 - 2 - 2 µs tCHCL tFC Clock fall time - 2 - 2 - 2 µs tDVCH tDSU Data in setup time 20 - 10 - 5 - ns tCHDX tDH Data in hold time 20 - 10 - 10 - ns tHHCH - Clock low hold time after HOLD not active 60 - 30 - 15 - ns tHLCH - Clock low hold time after HOLD active 60 - 30 - 15 - ns tCLHL - Clock low setup time before HOLD active 0 - 0 - 0 - ns tCLHH - Clock low setup time before HOLD not active 0 - 0 - 0 - ns tSHQZ(2) tDIS Output disable time - 80 - 40 - 20 ns tCLQV tV Clock low to output valid - 80 - 40 - 20 ns tCLQX tHO Output hold time 0 - 0 - 0 - ns tHHQV tLZ HOLD high to output valid - 80 - 40 - 20 ns tHLQZ(2) tHZ HOLD low to output High-Z - 80 - 40 - 20 ns tW tWC Write time - 5 - 5 - 5 ms 1. tCH + tCL must never be less than the shortest possible clock period, 1 / fC(max). 2. Characterized only, not tested in production. M95128-W M95128-R M95128-DF DC and AC parameters DS1356 - Rev 20 page 31/48 |
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