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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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ADUCM310 Datenblatt(PDF) 13 Page - Analog Devices |
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ADUCM310 Datenblatt(HTML) 13 Page - Analog Devices |
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13 / 28 page  ADuCM310 Data Sheet Rev. A Page 12 of 27 TIMING SPECIFICATIONS I2C Timing Table 2. I2C Timing in Standard Mode (100 kHz) Slave Parameter Description Min Typ Max Unit t L SCLx low pulse width 4.7 µs t H SCLx high pulse width 4.0 ns t SHD Start condition hold time 4.0 µs t DSU Data setup time 250 ns t DHD Data hold time (SDAx held internally for 300 ns after falling edge of SCLx) 0 3.45 µs t RSU Setup time for repeated start 4.7 µs t PSU Stop condition setup time 4.0 µs t BUF Bus free time between a stop condition and a start condition 4.7 µs t R Rise time for both SCLx and SDAx 1 µs t F Fall time for both SCLx and SDAx 15 300 ns t VD;DAT Data valid time 3.45 µs t VD;ACK Data valid acknowledge time 3.45 µs Table 3. I2C Timing in Fast Mode (400 kHz) Slave Parameter Description Min Typ Max Unit t L SCLx low pulse width 1.3 µs t H SCLx high pulse width 0.6 ns t SHD Start condition hold time 0.3 µs t DSU Data setup time 100 ns t DHD Data hold time (SDAx held internally for 300 ns after falling edge of SCLx) 0 µs t RSU Setup time for repeated start 0.6 µs t PSU Stop condition setup time 0. 3 µs t BUF Bus free time between a stop condition and a start condition 1.3 µs t R Rise time for both SCLx and SDAx 20 300 ns t F Fall time for both SCLx and SDAx 15 300 ns t VD;DAT Data valid time 0.9 µs t VD;ACK Data valid acknowledge time 0.9 µs SDAx (I/O) tBUF MSB LSB ACK MSB 1 9 8 2 TO 7 1 SCLx (I) P S S(R) REPEATED START START CONDITION STOP CONDITION tR tF tF tR tH tVD;DAT tL tDSU tDHD tRSU tDHD tDSU tSHD tPSU tVD;ACK Figure 2. I2C Compatible Interface Timing |
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