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STW5094AD 数据表(PDF) 35 Page - STMicroelectronics |
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STW5094AD 数据表(HTML) 35 Page - STMicroelectronics |
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35 / 51 page ![]() 35/51 STw5094A I2C bus control port timing Note: A signal is valid if it is above VIH or below VIL and invalid if it is between VIL and VIH.For the purpose of this specification the following conditions apply (see Fig. 15): a) All input signal are defined as: VIL = 0.2VCCIO, VIH = 0.8VCCIO, tR < 10ns, tF < 10ns. b) Delay times are measured from the inputs signal valid to the output signal valid. c) Setup times are measured from the data input valid to the clock input invalid. d) Hold times are measured from the clock signal valid to the data input invalid. tHMD Hold Time, MCLK low to DR invalid 10 ns tHMFR Hold Time MCLK High to FS low 30 ns tSFMR Setup Time, FS high to MCLK High 30 ns tDMDR Delay Time, MCLK low to data valid Load = 20pF 100 ns tDMZR Delay Time, MCLK High to DX disabled 10 100 ns tHMDR Hold Time, MCLK High to DR invalid 20 ns Symbol Parameter Test Condition Min. Typ. Max. Unit fSCL Clock Frequency 400 kHz tHIGH Clock High Time 600 ns tLOW Clock Low Time 1300 ns tR SDA and SCL Rise Time 1000 ns tF SDA and SCL Fall Time 300 ns tHD:STA Start Condition Hold Time 600 ns tSU:STA Start Condition Setup Time 600 ns tHD:DAT Data Input Hold Time 0 ns tSU:DAT Data Input Setup Time 250 ns tSU:STO Stop Condition Setup Time 600 ns tBUF Bus Free Time 1300 ns Symbol Parameter Test Condition Min. Typ. Max. Unit |
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