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LSM6DSR 数据表(PDF) 13 Page - STMicroelectronics |
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LSM6DSR 数据表(HTML) 13 Page - STMicroelectronics |
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13 / 168 page  4.4.2 I²C - inter-IC control interface Subject to general operating conditions for Vdd and Top. Table 6. I²C slave timing values Symbol Parameter I²C fast mode(1)(2) I²C fast mode +(1)(2) Unit Min Max Min Max f(SCL) SCL clock frequency 0 400 0 1000 kHz tw(SCLL) SCL clock low time 1.3 0.5 µs tw(SCLH) SCL clock high time 0.6 0.26 tsu(SDA) SDA setup time 100 50 ns th(SDA) SDA data hold time 0 0.9 0 µs th(ST) START/REPEATED START condition hold time 0.6 0.26 tsu(SR) REPEATED START condition setup time 0.6 0.26 tsu(SP) STOP condition setup time 0.6 0.26 tw(SP:SR) Bus free time between STOP and START condition 1.3 0.5 Data valid time 0.9 0.45 Data valid acknowledge time 0.9 0.45 CB Capacitive load for each bus line 400 550 pF 1. Data based on standard I²C protocol requirement, not tested in production. 2. Data for I²C fast mode and I²C fast mode + have been validated by characterization, not tested in production. Figure 6. I²C slave timing diagram SDA SCL tsu(SP) tw(SCLL) tsu(SDA) tsu(SR) th(ST) tw(SCLH) th(SDA) tw(SP:SR) START REPEATED START STOP START Note: Measurement points are done at 0.3·Vdd_IO and 0.7·Vdd_IO for both ports. LSM6DSR Communication interface characteristics DS11976 - Rev 2 page 13/168 |
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