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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM8S207MB датащи(PDF) 80 Page - STMicroelectronics |
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STM8S207MB датащи(HTML) 80 Page - STMicroelectronics |
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80 / 103 page  Electrical characteristics STM8S207xx, STM8S208xx 80/103 Doc ID 14733 Rev 12 10.3.9 I2C interface characteristics Table 43. I2C characteristics Symbol Parameter Standard mode I2C Fast mode I2C(1) 1. fMASTER, must be at least 8 MHz to achieve max fast I 2C speed (400kHz) 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 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 µs tw(STO:STA) STOP to START condition time (bus free) 4.7 1.3 µs Cb Capacitive load for each bus line 400 400 pF |
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