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HM8563 датащи(PDF) 19 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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HM8563 датащи(HTML) 19 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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19 / 22 page ![]() • 18 • RS serial resistance −− 40 k Ω CL parallel load capacitance − 10 − pF CT trimmer capacitance Version B 2 − 10 pF Version C 8 − 12 CLKOUT output δCLKOUT CLKOUT duty factor [1] − 50 −% I2 C-bus timing characteristics[2] fSCL SCL clock frequency [3] −− 400 kHz tHD;STA START condition hold time 0.6 −− μs tSU:STA set-up time for a repeated START condition 0.6 −− μs tLOW SCL LOW time 1.3 −− μs tHIGH SCL HIGH time 0.6 −− μs tr SCL and SDA rise time −− 0.3 μs tf SCL and SDA fall time −− 0.3 μs Cb capacitive bus line load −− 400 pF tSU;DAT data set-up time 100 −− ns tHD;DAT data hold time 0 −− ns tSU:STO set-up time for STOP condition 4.0 −− μs tSW tolerable spike width on bus −− 50 ns [1] Unspecified for fCLKOUT = 32.768 kHz. [2] All timing values are valid within the operating supply voltage range at Tamb and referenced to VIL and VIH with an input voltage swing of VSS to VDD. [3] I 2C -bus access time between two STARTs or between a START and a STOP condition to this device must be less than one second. Fig 18 I2C -bus timing waveforms. HM8563 |
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