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ST5088D 数据表(PDF) 25 Page - STMicroelectronics |
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ST5088D 数据表(HTML) 25 Page - STMicroelectronics |
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25 / 33 page  SERIAL CONTROL PORT TIMING (Usual COMBO I / II mode only) Symbol Parameter Test Condition Min. Typ. Max. Unit fCCLK Frequency of CCLK 2.048 MHz tWCH Period of CCLK high Measured from VIH to VIH 160 ns tWCL Period of CCLK low Measured from VIL to VIL 160 ns tRC Rise Time of CCLK Measured from VIL to VIH 50 ns tFC Fall Time of CCLK Measured from VIH to VIL 50 ns tHCS Hold Time, CCLK high to CS– low 10 ns tSSC Setup Time, CS– low to CCLK high 50 ns tSDC Setup Time, CI valid to CCLK high 50 ns tHCD Hold Time, CCLK high to CI invalid 50 ns tDCD Delay Time, CCLK low to CO data valid Load = 100 pF , plus 1 LSTTL load 80 ns tDSD Delay Time, CS–low to CO data valid 50 ns tDDZ Delay Time CS–high or 8th CCLK low to CO high impedance whichever comes first 15 80 ns tHSC Hold Time, 8th CCLK high to CS– high 100 ns tSCS Set up Time, CS– high to CCLK high 100 ns Note 5: A signal is valid if it is above VIH or below VIL and invalid if it is between VIL and VIH. For the purpoes of this specification the following conditions apply: a) All input signal are defined as: VIL = 0.4V, VIH = 2.7V, 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. ELECTRICAL CHARACTERISTICS (unless otherwise specified, VCC = 5V + 10%, TA =–5 °Cto70°C; typical characteristic are specified at VCC = 5V, TA =25 °C ; all signals are referenced to GND) DIGITAL INTERFACES Symbol Parameter Test Condition Min. Typ. Max. Unit VIL Input Low Voltage All digital inputs DC except pin AT AC 0.7 V 0.4 V VIH Input High Voltage All digital inputs DC except pin AT AC 2.0 V 2.7 V VIL Input Low Voltage Input AT 0.5 V VIH Input High Voltage Input AT VCC -0.5V V VOL Output Low Voltage DX,IL = -2.0mA; DC all other digital outputs, AC IL = –1mA 0.4 0.7 V V VOH Output High Voltage DX,IL = 2.0mA; DC all other digital outputs, AC IL = 1mA 2.4 2.0 V V IIL Input Low Current Any digital input, GND < VIN <VIL -10 10 µA IIH Input High Current Any digital input, VIH <VIN <VCC -10 10 µA IOZ Output Current in High impedance (Tri-state) DX and CO -10 10 µA ST5088 25/33 |
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