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HT45F5Q Datasheet(PDF) 86 Page - Holtek Semiconductor Inc |
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HT45F5Q Datasheet(HTML) 86 Page - Holtek Semiconductor Inc |
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86 / 114 page  Rev. 1.10 8� De�e��e� 1�� �01� Rev. 1.10 87 De�e��e� 1�� �01� HT45F5Q Charger Flash MCU HT45F5Q Charger Flash MCU OPA0 Functions TheOPA0canoperatetogetherwiththeMUX,DACandOPA1asshowninthemainfunctional blocksoftheBatterychargingcircuit. TheOPA0providesitsinputvoltageoffsettobeadjustablebyusingcommonmodeinputto calibratetheoffset. Thecalibrationstepsareasfollowing: • 1.SetA0FM=1tosetuptheoffsetcalibrationmode,hereS1onandS2off. • 2.SetA0RSPtoselectwhichinputpinistobeusedasthereferencevoltage–IsensepinorVM. • 3.AdjustA0OF4~A0OF0untiltheoutputstatuschanges • 4.SetA0FM=0torestorethenormalmode. Note:1.Whencalibration,thedevicecandetecttheOPAoutputstatusbyA0Xbit. 2.VMvoltageis0.1VatVDD=5V. 3.AfterOPA0offsetcalibration,settheA0RSPbitbytheactualapplications. • PGDR Register Bit 7 6 5 4 3 2 1 0 Na�e — — — — — — — PGDF R/W — — — — — — — R POR — — — — — — — 0 Bit7~1 Unimplemented,readas“0” Bit0 PGDF:PowerGoodDetectionreadyflag 0:DetectVDD<4.6V 1:DetectVDD≥4.6V Note:ThedevicecandetecttheVDDcurrentstatusbyPGDFbit. |
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