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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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STV9211 数据表(PDF) 25 Page - STMicroelectronics |
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STV9211 数据表(HTML) 25 Page - STMicroelectronics |
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25 / 37 page  25/37 STV9211 I2C electrical characteristics 7I2C ELECTRICAL CHARACTERISTICS Tamb =25°C, VCCA = 5V, VCCP= 8V, Vi = 0.7 VPP, CLOAD = 5pF 8I2C INTERFACE TIMING REQUIREMENTS Symbol Parameter Test conditions Min. Typ. Max. Units VIL Low Level Input Voltage On Pins SDA, SCL 1.5 V VIH High Level Input Voltage 3 V IIN Input Current (Pins SDA, SCL) 0.4 V < V IN < 4.5 V -10 +10 µA fSCL(Max.) SCL Maximum Clock Frequency 0.25 200 kHz VOL Low Level Output Voltage SDA Pin when ACK Sink Current = 6mA 0.6 V Symbol Parameter Min. Typ. Max. Units tBUF Time the bus must be free between two accesses 1300 ns tHDS Hold Time for Start Condition 600 ns tSUP Set-up Time for Stop Condition 600 ns tLOW The Low Period of Clock 1300 ns tHIGH The High Period of Clock 600 ns tHDAT Hold Time Data 300 ns tSUDAT Set-up Time Data 250 ns tR, tF Rise and Fall Time of both SDA and SCL 20 ns Figure 15: I2C timing diagram tHDAT tSUDAT tLOW tHIGH tHDS tSUP tBUF SDA SCL |
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