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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT48R002 датащи(PDF) 34 Page - Holtek Semiconductor Inc |
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HT48R002 датащи(HTML) 34 Page - Holtek Semiconductor Inc |
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34 / 71 page  Rev. 1.11 34 April 11, 2017 Rev. 1.11 35 April 11, 2017 HT48R002/HT48R003 Cost-Effective I/O 8-Bit OTP MCU HT48R002/HT48R003 Cost-Effective I/O 8-Bit OTP MCU Pull-high Resistors Manyproductapplicationsrequirepull-highresistorsfortheirswitchinputsusuallyrequiringthe useofanexternalresistor.Toeliminatetheneedfortheseexternalresistors,allI/Opins,when configuredasaninputhavethecapabilityofbeingconnectedtoaninternalpull-highresistor.These pull-highresistorsareselectedusingtheregistersPAPUandPCPUlocatedintheDataMemory.The pull-highresistorsareimplementedusingweakPMOStransistors.NotethatpinPA7doesnothave apull-highresistorselection. PAPU Register Bit 7 6 5 4 3 2 1 0 Name — PAPU6 PAPU5 PAPU4 PAPU3 PAPU2 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 PAPU6~PAPU0:PortAbit6~bit0pull-highcontrol 0:Disable 1:Enable PCPU Register Bit 7 6 5 4 3 2 1 0 Name — — PCPU5 PCPU4 PCPU3 PCPU2 PCPU1 PCPU0 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 PCPU5~PCPU0:PortCbit5~bit0pull-highcontrol 0:Disable 1:Enable Port A Wake-up IftheHALTinstructionisexecuted,thedevicewillentertheSleepMode,wherethesystemclockwill stopresultinginpowerbeingconserved,afeaturethatisimportantforbatteryandotherlow-power applications.Variousmethodsexisttowake-upthemicrocontroller,oneofwhichistochange thelogicconditionononeofthePA0~PA2,PA5pinsfromhightolow.AfteraHALTinstruction forcesthemicrocontrollerintoenteringtheSleepMode,theprocessorwillremaininalow-power stateuntilthelogicconditionoftheselectedwake-uppinonPortAchangesfromhightolow.This functionisespeciallysuitableforapplicationsthatcanbewokenupviaexternalswitches.Note thatpinsPA0~PA2,PA5canbeselectedindividuallytohavethiswake-upfeatureusinganinternal registerknownasPAWU,locatedintheDataMemory. |
Аналогичный номер детали - HT48R002 |
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Аналогичное описание - HT48R002 |
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