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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT68F002 датащи(PDF) 53 Page - Holtek Semiconductor Inc |
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HT68F002 датащи(HTML) 53 Page - Holtek Semiconductor Inc |
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53 / 119 page  Rev. 1.41 52 April 11, 2017 Rev. 1.41 53 April 11, 2017 HT68F002/HT68F0025/HT68F003 Cost-Effective Flash MCU with EEPROM HT68F002/HT68F0025/HT68F003 Cost-Effective Flash MCU with EEPROM Pin-Shared Functions Theflexibilityofthemicrocontrollerrangeisgreatlyenhancedbytheuseofpinsthathavemore thanonefunction.Limitednumbersofpinscanforceseriousdesignconstraintsondesignersbut bysupplyingpinswithmulti-functions,manyofthesedifficultiescanbeovercome.Thewayin whichthepinfunctionofeachpinisselectedisdifferentforeachfunctionandapriorityorderis establishedwheremorethanonepinfunctionisselectedsimultaneously.Additionallythereare aPASRandaPBSRregistertoestablishcertainpinfunctions.Generallyspeaking,theanalog functionhashigherprioritythanthedigitalfunction.However,ifmorethantwoanalogfunctions areenabledandtheanalogsignalinputcomesfromthesameexternalpin,theanaloginputwillbe internallyconnectedtoalloftheseactiveanalogfunctionalmodules. Pin-shared Registers Thelimitednumberofsuppliedpinsinapackagecanimposerestrictionsontheamountoffunctions acertaindevicecancontain.Howeverbyallowingthesamepinstoshareseveraldifferentfunctions andprovidingameansoffunctionselection,awiderangeofdifferentfunctionscanbeincorporated intoevenrelativelysmallpackagesizes. • PASR Register – HT68F002/HT68F0025 Bit 7 6 5 4 3 2 1 0 Name — PAS6 — PAS4 — PAS2 — PAS0 R/W — R/W — R/W — R/W — R/W POR — 0 — 0 — 0 — 0 Bit7 Unimplemented,readas"0" Bit6 PAS6:Pin-SharedControlBit 0:PA5/INT 1:STP0B Bit5 Unimplemented,readas"0" Bit4 PAS4:Pin-SharedControlBits 0:PA2/INT 1:STP0 Bit3 Unimplemented,readas"0" Bit2 PAS2:Pin-SharedControlBit 0:PA1 1:STP0B Bit1 Unimplemented,readas"0" Bit0 PAS0:Pin-SharedControlBit 0:PA0/STP0I 1:STP0 |
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