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ADE7923 数据表(PDF) 11 Page - Analog Devices |
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ADE7923 数据表(HTML) 11 Page - Analog Devices |
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11 / 125 page  Data Sheet ADE7978/ADE7933/ADE7932/ADE7923 Rev. D | Page 11 of 125 I2C Interface Timing Parameters VDD = 3.3 V ± 10%, GND = DGND = 0 V, XTALIN = 16.384 MHz, TMIN to TMAX = −40°C to +85°C. Table 3. Standard Mode Fast Mode Parameter Symbol Min Max Min Max Unit SCL Clock Frequency f SCL 0 100 0 400 kHz Hold Time for Start and Repeated Start Conditions t HD;STA 4.0 0.6 µs Low Period of SCL Clock t LOW 4.7 1.3 µs High Period of SCL Clock t HIGH 4.0 0.6 µs Setup Time for Repeated Start Condition t SU;STA 4.7 0.6 µs Data Hold Time t HD;DAT 0 3.45 0 0.9 µs Data Setup Time t SU;DAT 250 100 ns Rise Time of SDA and SCL Signals t R 1000 20 300 ns Fall Time of SDA and SCL Signals t F 300 20 300 ns Setup Time for Stop Condition t SU;STO 4.0 0.6 µs Bus Free Time Between a Stop and Start Condition t BUF 4.7 1.3 µs Pulse Width of Suppressed Spikes t SP N/A1 50 ns 1 N/A means not applicable. tF tR tHD;DAT tHD;STA tHIGH tSU;STA tSU;DAT tF tHD;STA tSP tSU;STO tr tBUF tLOW SDA SCL START CONDITION REPEATED START CONDITION STOP CONDITION START CONDITION Figure 6. I2C Interface Timing |
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