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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM8AF6213 датащи(PDF) 84 Page - STMicroelectronics |
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STM8AF6213 датащи(HTML) 84 Page - STMicroelectronics |
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84 / 106 page  Electrical characteristics STM8AF6213/23/23A/26 84/106 DocID025118 Rev 5 9.3.9 I2C interface characteristics Table 53. I2C characteristics Symbol Parameter Standard mode I2CFast mode I2C(1) 1. fMASTER, must be at least 8 MHz to achieve max fast I2C speed (400 kHz) Unit Min(2) 2. Data based on standard I2C protocol requirement, not tested in production Max(2) Min(2) Max(2) 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(3) 3. The maximum hold time of the start condition has only to be met if the interface does not stretch the low time 3450 0(4) 4. The device must internally provide a hold time of at least 300 ns for the SDA signal in order to bridge the undefined region of the falling edge of SCL 900(3) tr(SDA) tr(SCL) SDA and SCL rise time - 1000 - 300 tf(SDA) tf(SCL) SDA and SCL fall time - 300 - 300 th(STA) START condition hold time 4.0 - 0.6 - µs tsu(STA) Repeated START condition setup time 4.7 - 0.6 - tsu(STO) STOP condition setup time 4.0 - 0.6 - tw(STO:STA) STOP to START condition time (bus free) 4.7 - 1.3 - tSP Pulse width of spikes suppressed by the input filter 050(5) 5. The minimum width of the spikes filtered by the analog filter is above tSP(max) 050 ns Cb Capacitive load for each bus line - 400 - 400 pF |
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