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AS3701 数据表(PDF) 46 Page - ams-OSRAM AG |
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AS3701 数据表(HTML) 46 Page - ams-OSRAM AG |
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46 / 110 page ![]() ams Datasheet Page 45 [v1-11] 2016-Dec-14 Document Feedback AS3701 − Detailed Description – System Functions Internal References Description The internal 2.0V reference and the oscillator are powered either via the VUSB input pin or via the VBAT input pin, depending on which level is higher. The internal oscillator is used for PWM, SD frequency and all timings, which are needed for the charger, the startup sequence and reset delays. Parameter Figure 53: Reference Parameter Reference Parameter: Shows the key electrical parameter of the on-chip oscillator Symbol Parameter Conditions Min Typ Max Unit fCLK Accuracy of internal reference clock Adjustable by serial interface register clk_int -12 fCLK +12 % |
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