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FPSS050B Datasheet(PDF) 9 Page - All Sensors Corporation |
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FPSS050B Datasheet(HTML) 9 Page - All Sensors Corporation |
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9 / 11 page ![]() All Sensors DS-0329 Rev B Serial Interface Specification Parameter Symbol Conditions Min. Typ. Max. Units Internal Oscillator Clock Frequency f ICLK OSC(4:0)=00000 3.3 4.15 5.3 MHZ External Clock Frequency f ECLK V CKSEL=0 Min. - 0.2 - MHZ Max. - 5 - MHZ External Master Clock Input Low Time f ECLKIN LO t ECLK=1/fECLK 40 - 60 %t ECLK External Master Clock Input High Time f ECLKIN HI t ECLK=1/fECLK 40 - 60 %t ECLK SCLK Setup to Falling Edge /CS t SC - 30 - - ns /CS Falling Edge to SCLK Rising Edge Setup Time t CSS - 30 - - ns /CS Idle Time t CSI f CLK= 4 MHZ 1.5 - - µs SCLK Falling Edge to Data Valid Delay t DO C LOAD=15 pF - - 80 ns Data Valid to SCLK Rising Edge Setup Time t DS - 30 - - ns Data Valid to SCLK Rising Edge Hold Time t DH - 30 - - ns SCLK High Pulse Width t CH - 100 - - ns SCLK Low Pulse Width t CI - 100 - - ns /CS Rising Edge to SCLK Rising Edge Hold Time t CSH - 30 - - ns /CS Falling Edge to Output Enable t DV C LOAD=15 pF - - 25 ns /CS Rising Edge to Output Disable t TR C LOAD=15 pF - - 25 ns FPS (5 V Supply) Maximum Output Load Capacities C LOAD R LOAD= ∞, - 200 - pF Phase Margin > 55 ° Input Voltage, Logic HIGH V IH - 0.8 x Vs - - V Input Voltage, Logic LOW V IL - - - 0.2 x Vs V Output Voltage, Logic HIGH V OH R LOAD= ∞, Vs-0.1 - - V R LOAD= 2 k Ω, Vs-0.15 - - V Output Voltage, Logic LOW V OL R LOAD= ∞, - - 0.5 V R LOAD= 2 k Ω, - - 0.2 V FPS (3 V Supply)11 Maximum Output Load Capacities C LOAD R LOAD= 1 k Ω, - 15 - pF Input Voltage, Logic HIGH V IH - 0.65 x Vs - - V Input Voltage, Logic LOW V IL - - - 0.35 x Vs V Output Voltage, Logic HIGH V OH I O= -20 µA Vs-0.4 - - V Output Voltage, Logic LOW V OL I O=20 µA - - 0.4 V Page 9 Fig. 2 : Timing Diagram CSS t t DV SCLK MOSI MISO /CS t SC t CL CH t t DH t DS DO t t TR t CSH t CSI |
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