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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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STM32L100RB 데이터시트(PDF) 77 Page - STMicroelectronics |
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STM32L100RB 데이터시트(HTML) 77 Page - STMicroelectronics |
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77 / 103 page  DocID024295 Rev 5 77/103 STM32L100C6 STM32L100R8/RB Electrical characteristics 90 Figure 17. I2C bus AC waveforms and measurement circuit 1. RS = series protection resistors 2. RP = pull-up resistors 3. VDD_I2C = I2C bus supply 4. Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD. Table 47. SCL frequency (fPCLK1= 32 MHz, VDD = VDD_I2C = 3.3 V)(1)(2) 1. RP = External pull-up resistance, fSCL = I2C speed. 2. For speeds around 200 kHz, the tolerance on the achieved speed is of ±5%. For other speed ranges, the tolerance on the achieved speed is ±2%. These variations depend on the accuracy of the external components used to design the application. fSCL (kHz) I2C_CCR value RP = 4.7 kΩ 400 0x801B 300 0x8024 200 0x8035 100 0x00A0 50 0x0140 20 0x0320 |
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