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HT45F4MA Datasheet(PDF) 111 Page - Holtek Semiconductor Inc |
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HT45F4MA Datasheet(HTML) 111 Page - Holtek Semiconductor Inc |
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111 / 145 page  Rev. 1.20 110 De�e��e� 1�� 201� Rev. 1.20 111 De�e��e� 1�� 201� HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU OCVPR5 Register Bit 7 6 5 4 3 2 1 0 Na�e — — — — — AX CBX CAX R/W — — — — — R R R POR — — — — — x x x “x”: unknown Bit7~3 Unimplemented,readas"0" Bit2 AX:OverCurrentProtectionOperationalAmplifierDigitalOutput 0:positiveinputvoltage<negativeinputvoltage 1:positiveinputvoltage>negativeinputvoltage Bit1 CBX:OverCurrentProtectionComparatorDigitalOutput 0:positiveinputvoltage<negativeinputvoltage 1:positiveinputvoltage>negativeinputvoltage Bit0 CAX:OverVoltageProtectionComparatorDigitalOutput 0:positiveinputvoltage<negativeinputvoltage 1:positiveinputvoltage>negativeinputvoltagel OCP Operational Amplifier Offset Cancellation Function OPAallowsforacommodemodeadjustmentmethodofitsinputoffsetvoltage. ARS AOFM S1 S2 S3 0 0 ON ON OFF 0 1 OFF ON ON 1 0 ON ON OFF 1 1 ON OFF ON S1 S2 S3 A O PA + in put O PA - in pu t OP A ou tp ut AO F0 ~A OF 5, O CP EN Thecalibrationstepsareasfollowing: • SetAOFM=1tosetuptheoffsetcancellationmode,hereS3isclosed • SetARStoselectwhichinputpinistobeusedasthereferencevoltage–S1orS2isclosed • AdjustAOF0~AOF5untiltheoutputstatuschanges • SetAOFM=0torestorethenormalOPAmode |
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