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HT66F4530 Datasheet(PDF) 58 Page - Holtek Semiconductor Inc |
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HT66F4530 Datasheet(HTML) 58 Page - Holtek Semiconductor Inc |
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58 / 224 page  Rev. 1.00 58 De�e��e� �1� �01� Rev. 1.00 59 De�e��e� �1� �01� HT66F4530/HT66F4540/HT66F4550 A/D Flash MCU with Dual Operational Amplifiers HT66F4530/HT66F4540/HT66F4550 A/D Flash MCU with Dual Operational Amplifiers Bit1 HIRCF:HIRCoscillatorstableflag 0:HIRCunstable 1:HIRCstable ThisbitisusedtoindicatewhethertheHIRCoscillatorisstableornot.Whenthe HIRCENbitissetto1toenabletheHIRCoscillatorortheHIRCfrequencyselection ischangedbyapplicationprogram,theHIRCFbitwillfirstbeclearedto0andthen setto1aftertheHIRCoscillatorisstable. Bit0 HIRCEN:HIRCoscillatorenablecontrol 0:Disable 1:Enable HXTC Register Bit 7 6 5 4 3 2 1 0 Na�e — — — — — HXTM HXTF HXTEN R/W — — — — — R/W R R/W POR — — — — — 0 0 0 Bit7~3 Unimplemented,readas0. Bit2 HXTM:HXTmodeselection 0:HXTfrequency≤10MHz 1:HXTfrequency>10MHz ThisbitisusedtoselecttheHXToscillatoroperatingmode.Notethatthisbitmust beproperlyconfiguredbeforetheHXTisenabled.WhentheHXTENbitissetto1to enabletheHXToscillator,itisinvalidtochangethevalueofthisbit. Bit1 HXTF:HXToscillatorstableflag 0:HXTunstable 1:HXTstable ThisbitisusedtoindicatewhethertheHXToscillatorisstableornot.Whenthe HXTENbitissetto1toenabletheHXToscillator,theHXTFbitwillfirstbecleared to0andthensetto1aftertheHXToscillatorisstable. Bit0 HXTEN:HXToscillatorenablecontrol 0:Disable 1:Enable LXTC Register Bit 7 6 5 4 3 2 1 0 Na�e — — — — — — LXTF LXTEN R/W — — — — — — R R/W POR — — — — — — 0 0 Bit7~2 Unimplemented,readas0. Bit1 LXTF:LXToscillatorstableflag 0:LXTunstable 1:LXTstable ThisbitisusedtoindicatewhethertheLXToscillatorisstableornot.Whenthe LXTENbitissetto1toenabletheLXToscillator,theLXTFbitwillfirstbecleared to0andthensetto1aftertheLXToscillatorisstable. Bit0 LXTEN:LXToscillatorenablecontrol 0:Disable 1:Enable |
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