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AD5338ARM-REEL7 bảng dữ liệu(PDF) 6 Page - Analog Devices |
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AD5338ARM-REEL7 bảng dữ liệu(HTML) 6 Page - Analog Devices |
6 / 24 page AD5337/AD5338/AD5339 Rev. A | Page 6 of 24 TIMING CHARACTERISTICS VDD = 2.5 V to 5.5 V. All specifications TMIN to TMAX, unless otherwise noted. Table 3. Parameter Limit at TMIN, TMAX (A and B Versions) Unit Conditions/Comments fSCL 400 kHz max SCL clock frequency t1 2.5 µs min SCL cycle time t2 0.6 µs min tHIGH, SCL high time t3 1.3 µs min tLOW, SCL low time t4 0.6 µs min tHD, STA, start/repeated start condition hold time t5 100 ns min tSU, DAT, data setup time t61 0.9 µs max tHD, DAT, data hold time 0 µs min tHD, DAT, data hold time t7 0.6 µs min tSU, STA, setup time for repeated start t8 0.6 µs min tSU, STO, stop condition setup time t9 1.3 µs min tBUF, bus free time between a stop and a start condition t10 300 ns max tR, rise time of SCL and SDA when receiving 0 ns min tR, rise time of SCL and SDA when receiving (CMOS-compatible) t11 250 ns max tF, fall time of SDA when transmitting 0 ns min tF, fall time of SDA when receiving (CMOS-compatible) 300 ns max tF, fall time of SCL and SDA when receiving 20 + 0.1 CB2 ns min tF, fall time of SCL and SDA when transmitting CB 400 pF max Capacitive load for each bus line 1 A master device must provide a hold time of at least 300 ns for the SDA signal (referred to VIH min of the SCL signal) in order to bridge the undefined region of SCL’s falling edge. 2 CB is the total capacitance of one bus line in pF; tR and tF measured between 0.3 VDD and 0.7 VDD. STOP SCL SDA START CONDITION t9 t3 t4 t6 t2 t5 t7 t8 t1 t4 t11 t10 REPEATED START CONDITION CONDITION Figure 2. 2-Wire Serial Interface Timing Diagram |
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