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M95040-DRMF8TP Datasheet(PDF) 30 Page - STMicroelectronics |
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M95040-DRMF8TP Datasheet(HTML) 30 Page - STMicroelectronics |
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30 / 39 page ![]() DC and AC parameters M95040-DRE 30/39 DocID027516 Rev 1 Table 12. AC characteristics Symbol Alt. Parameter Min. Max. Min. Max. Min. Max. Unit Test conditions specified in Table 9 Test conditions specified in Table 9 Test conditions specified in Table 10 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 - tSHSL tCS S deselect time 90 - 40 - 20 - tCHSH tCSH S active hold time 60 - 30 - 15 - tCHSL S not active hold time 60 - 30 - 15 - tCH(1) tCLH Clock high time 80 - 40 - 20 - tCL(1) tCLL Clock low time 80 - 40 - 20 - tCLCH(2) tRC Clock rise time -2-2-2 µs tCHCL(2) tFC Clock fall time - 2 - 2 - 2 tDVCH tDSU Data in setup time 20 - 10 - 5 - ns tCHDX tDH Data in hold time 20 - 10 - 10 - tHHCH Clock low hold time after HOLD not active 60 - 30 - 15 - tHLCH Clock low hold time after HOLD active 60 - 30 - 15 - tCLHL Clock low set-up time before HOLD active 0-0-0 - tCLHH Clock low set-up time before HOLD not active 0-0-0 - tSHQZ(2) tDIS Output disable time - 80 - 40 - 20 tCLQV(3) tV Clock low to output valid - 80 - 40 - 20 tCLQX tHO Output hold time 0 - 0 - 0 - tQLQH(2) tRO Output rise time - 20 - 20 - 20 tQHQL(2) tFO Output fall time - 20 - 20 - 20 tHHQV tLZ HOLD high to output valid - 80 - 40 - 20 tHLQZ(2) tHZ HOLD low to output high-Z - 80 - 40 - 20 tW tWC Write time -4-4-4 ms 1. tCH + tCL must never be lower than the shortest possible clock period, 1/fC(max). 2. Value guaranteed by characterization, not 100% tested in production. 3. tCLQV must be compatible with tCL (clock low time): if tSU is the Read setup time of the SPI bus master, tCL must be equal to (or greater than) tCLQV+tSU. |
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