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STM32F100V8 数据表(PDF) 62 Page - STMicroelectronics |
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STM32F100V8 数据表(HTML) 62 Page - STMicroelectronics |
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62 / 84 page ![]() Electrical characteristics STM32F100x4, STM32F100x6, STM32F100x8, STM32F100xB 62/84 Doc ID 16455 Rev 2 Figure 27. I2C bus AC waveforms and measurement circuit(1) 1. Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD. Table 39. SCL frequency (fPCLK1= 24 MHz, VDD = 3.3 V) (1)(2) 1. RP = External pull-up resistance, fSCL = I 2C speed, 2. For speeds around 400 kHz, the tolerance on the achieved speed is of 2%. For other speed ranges, the tolerance on the achieved speed 1%. These variations depend on the accuracy of the external components used to design the application. fSCL (kHz) I2C_CCR value RP = 4.7 k 400 0x8011 300 0x8016 200 0x8021 100 0x0064 50 0x00C8 20 0x01F4 Ω Ω Ω Ω |
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