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HTS221TR Datasheet(PDF) 10 Page - STMicroelectronics |
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HTS221TR Datasheet(HTML) 10 Page - STMicroelectronics |
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10 / 33 page  Sensor parameters and electrical specifications HTS221 10/33 DocID026333 Rev 4 2.1.2 I²C - control interface Subject to general operating conditions for VDD and TOP. Figure 4. I²C slave timing diagram Note: Measurement points are done at 0.2·VDD and 0.8·VDD, for both ports. Table 6. I²C slave timing values Symbol Parameter (1) I²C standard mode (1) I²C fast mode (1) Unit Min. Max. Min. Max. f(SCL) SCL clock frequency 0 100 0 400 kHz tw(SCLL) SCL clock low time 4.7 1.3 μs tw(SCLH) SCL clock high time 4.0 0.6 tsu(SDA) SDA setup time 250 100 ns th(SDA) SDA data hold time 0.01 3.45 0 0.9 μs tr(SDA) tr(SCL) SDA and SCL rise time 1000 20 + 0.1Cb (2) 300 ns tf(SDA) tf(SCL) SDA and SCL fall time 300 20 + 0.1Cb (2) 300 th(ST) START condition hold time 4 0.6 μs tsu(SR) Repeated START condition setup time 4.7 0.6 tsu(SP) STOP condition setup time 4 0.6 tw(SP:SR) Bus free time between STOP and START condition 4.7 1.3 1. Data based on standard I²C protocol requirement, not tested in production. 2. Cb = total capacitance of one bus line, in pF. |
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