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STM32F101X6 bảng dữ liệu(PDF) 53 Page - STMicroelectronics |
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STM32F101X6 bảng dữ liệu(HTML) 53 Page - STMicroelectronics |
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53 / 74 page ![]() STM32F101xx Electrical characteristics 53/74 Table 38. I2C characteristics Symbol Parameter Standard mode I2C(1) 1. Values based on standard I2C protocol requirement, not tested in production. Fast mode I2C(1)(2) 2. fPCLK1 must be higher than 2 MHz to achieve the maximum standard mode I 2C frequency. It must be higher than 4 MHz to achieve the maximum fast mode I2C frequency. Unit Min Max Min Max 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 period of SCL signal. 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 20+0.1Cb 300 tf(SDA) tf(SCL) SDA and SCL fall time 300 20+0.1Cb 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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