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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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HT45R2K-C bảng dữ liệu(PDF) 41 Page - Holtek Semiconductor Inc |
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HT45R2K-C bảng dữ liệu(HTML) 41 Page - Holtek Semiconductor Inc |
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41 / 105 page  Rev. 1.40 40 �a��� 1�� �01� Rev. 1.40 41 �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 Input/Output Ports HoltekmicrocontrollersofferconsiderableflexibilityontheirI/Oports.Mostpinscanhaveeitheran inputoroutputdesignationunderuserprogramcontrol.Additionally,astherearepull-highresistors andwake-upsoftwareconfigurations,theuserisprovidedwithanI/Ostructuretomeettheneedsof awiderangeofapplicationpossibilities. Forinputoperation,theseportsarenon-latching,whichmeanstheinputsmustbereadyattheT2 risingedgeofinstruction"MOVA,[m]",wheremdenotestheportaddress.Foroutputoperation, allthedataislatchedandremainsunchangeduntiltheoutputlatchisrewritten. I/O Register List Register Name POR Bit 7 6 5 4 3 2 1 0 PAWK 00H PAWK7 PAWK6 PAWK� PAWK4 PAWK3 PAWK� PAWK1 PAWK0 PAC FFH PAC7 PAC6 PAC� PAC4 PAC3 PAC� PAC1 PAC0 PAPU 00H — PAPU6 PAPU� PAPU4 PAPU3 PAPU� PAPU1 PAPU0 PBC 3FH — — PBC� PBC4 PBC3 PBC� PBC1 PBC0 PBPU 00H — — PBPU� PBPU4 PBPU3 PBPU� PBPU1 PBPU0 PCC FFH PCC7 PCC6 PCC� PCC4 PCC3 PCC� PCC1 PCC0 PCPU FFH PCPU7 PCPU6 PCPU� PCPU4 PCPU3 PCPU� PCPU1 PCPU0 Pull-high Resistors Manyproductapplicationsrequirepull-highresistorsfortheirswitchinputsusuallyrequiringthe useofanexternalresistor.Toeliminatetheneedfortheseexternalresistors,whenconfiguredas aninputhavethecapabilityofbeingconnectedtoaninternalpull-highresistor.Thesepull-high resistorsareselectableviaaregisterknownasPAPU,PBPUandPCPUlocatedintheDataMemory. Thepull-highresistorsareimplementedusingweakPMOStransistors.NotethatpinPA7doesnot haveapull-highresistorselection. PAPU Register Bit 7 6 5 4 3 2 1 0 Name — PAPU6 PAPU� PAPU4 PAPU3 PAPU� PAPU1 PAPU0 R/W — R/W R/W R/W R/W R/W R/W R/W POR — 0 0 0 0 0 0 0 Bit7 Unimplemented,readas“0” Bit6~0 PAPU:I/OPortbit6~bit0Pull-HighControl 0:Disable 1:Enable PBPU Register Bit 7 6 5 4 3 2 1 0 Name — — PBPU� PBPU4 PBPU3 PBPU� PBPU1 PBPU0 R/W — — R/W R/W R/W R/W R/W R/W POR — — 0 0 0 0 0 0 Bit7~6 Unimplemented,readas“0” Bit5~0 PBPU:I/OPortbit5~bit0Pull-HighControl 0:Disable 1:Enable |
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