| 전자부품 데이터시트 검색엔진 |
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M24128X-FCU6/TF 데이터시트(PDF) 23 Page - STMicroelectronics |
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M24128X-FCU6/TF 데이터시트(HTML) 23 Page - STMicroelectronics |
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23 / 35 page ![]() Figure 12. Maximum Rbus value vs. bus parasitic capacitance (Cbus) for an I2C bus at maximum frequency fC = 400 kHz 1 10 100 10 100 1000 Bus line capacitor (pF) I²C bus master M24xxx Rbus VCC Cbus SCL SDA R bu s × C bu s = 400 ns Here Rbus x Cbus = 120 ns 4 k 30 The Rbus x Cbus time constant must be below the 400 ns time constant line represented on the left. Figure 13. Maximum Rbus value vs. bus parasitic capacitance (Cbus) for an I2C bus at fC = 1MHz 1 10 0 I²C bus master M24xxx SCL SDA Here, R bus x C bus = 150 ns 4 30 10 Rbus x Cbus = 120 ns Bus line capacitor (pF) 10 100 The Rbus x Cbus time constant Must be below the 150 ns Time constant line represented on the left VCC Rbus Cbus M24128X-FCU DC and AC parameters DS12680 - Rev 2 page 23/35 |
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