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HT45R2K-C Fiches technique(PDF) 64 Page - Holtek Semiconductor Inc |
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HT45R2K-C Fiches technique(HTML) 64 Page - Holtek Semiconductor Inc |
64 / 105 page Rev. 1.40 64 �a��� 1�� �01� Rev. 1.40 6� �a��� 1�� �01� HT45R2K-C/-B/-A Dual Slope 16K/8K/4K ASSP MCU for Body Fat Scale HT45R2K-C/-B/-A Dual Slope 16K/8K/4K ASSP MCU for Body Fat Scale Additionally,thedevicealsoincludesabandgapvoltagegeneratorforthe1.5Vlowtemperature sensitivereferencevoltage.Thisreferencevoltageisusedasthezeroadjustmentandforasingle endtypereferencevoltage. VO BG P C FI L BG PQ ST (S FR b it s) 0: O ff (s hor t) 1: O n R egul at or B and Ga p E nhanc e R EF I R FI L RFILisabout100KΩandtherecommendCFILis10μF. Note:TheVOBGPsignalisonlyforinternalused.Itmustnotbeconnectedtoexternalcomponentsexcept fortherecommendCFILcapacitor. ThereisasingleregisterassociatedwiththismodulenamedCHPRC.TheCHPRCistheCharge Pump/RegulatorControlregister,whichcontrolsthechargepumpon/off,regulatoron/offfunctions aswellasaclockdividervaluetogeneratethechargepumpclock.TheCHPCKD4~CHPCKD0 bitsareusetosettheclockdividertogeneratethedesiredclockfrequencyforproperchargepump operation.Theactualfrequencyisdeterminedbythefollowingformula. ActualChargePumpClock=(fSYS/16)/(CHPCKD+1). CHPRC Register Bit 7 6 5 4 3 2 1 0 Name CHPCKD4 CHPCKD3 CHPCKD� CHPCKD1 CHPCKD0 BGPQST CHPEN REGEN R/W R/W R/W R/W R/W R/W R/W R/W R/W POR 0 0 0 0 0 0 0 0 Bit7~3 CHPCKD4 ~CHPCKD0:TheChargepumpclockdivider These5bitsselecttheclockdividerrationof1~32. ChargePumpclock=(fSYS/16)/(CHPCKD+1) Bit2 BGPQST:Bandgapquickstart-upfunction 0:Rshort,quicklystart 1:Rconnected,normalRCfiltermode EverytimewhenREGENchangesfrom0to1(regulatorturnson),thisbitshouldbe setto0andthensetto1tomakesuretheBandgapstabilisesquickly(Theminimum timeisabout2msnow). Bit1 CHPEN:ChargePumpon/offcontrol 0:disable 1:enable Note:thisbitwillbeignorediftheREGENisdisabled. Bit0 REGEN:Regulator/Charge-Pumpmoduleon/offcontrol 0:disable 1:enable |
Numéro de pièce similaire - HT45R2K-C_15 |
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Description similaire - HT45R2K-C_15 |
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