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HT66F4530 数据表(PDF) 78 Page - Holtek Semiconductor Inc |
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HT66F4530 数据表(HTML) 78 Page - Holtek Semiconductor Inc |
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78 / 224 page ![]() Rev. 1.00 78 De�e��e� �1� �01� Rev. 1.00 79 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 Pin-shared Functions Theflexibilityofthemicrocontrollerrangeisgreatlyenhancedbytheuseofpinsthathavemore thanonefunction.Limitednumbersofpinscanforceseriousdesignconstraintsondesignersbutby supplyingpinswithmulti-functions,manyofthesedifficultiescanbeovercome.Forthesepins,the desiredfunctionofthemulti-functionI/Opinsisselectedbyaseriesofregistersviatheapplication programcontrol. Pin-shared Function Selection Registers Thelimitednumberofsuppliedpinsinapackagecanimposerestrictionsontheamountoffunctions acertaindevicecancontain.Howeverbyallowingthesamepinstoshareseveraldifferentfunctions andprovidingameansoffunctionselection,awiderangeofdifferentfunctionscanbeincorporated intoevenrelativelysmallpackagesizes.ThesedevicesincludePort"x"OutputFunctionSelection register"n",labeledasPxSn,andInputFunctionSelectionregister,labeledasIFS,whichcanselect thedesiredfunctionsofthemulti-functionpin-sharedpins. Themostimportantpointtonoteistomakesurethatthedesiredpin-sharedfunctionisproperly selectedandalsodeselected.Toselectthedesiredpin-sharedfunction,thepin-sharedfunction shouldfirstbecorrectlyselectedusingthecorrespondingpin-sharedcontrolregister.Afterthatthe correspondingperipheralfunctionalsettingshouldbeconfiguredandthentheperipheralfunction canbeenabled.Tocorrectlydeselectthepin-sharedfunction,theperipheralfunctionshouldfirstbe disabledandthenthecorrespondingpin-sharedfunctioncontrolregistercanbemodifiedtoselect otherpin-sharedfunctions. Register Name Bit 7 6 5 4 3 2 1 0 PAS0 — — PAS05 PAS04 PAS03 PAS0� PAS01 PAS00 PAS1 PAS17 PAS1� PAS15 PAS14 — — — — PBS0 PBS07 PBS0� — — PBS03 PBS0� PBS01 PBS00 PBS1 — — — — — — PBS11 PBS10 PCS0 — — PCS05 PCS04 PCS03 PCS0� PCS01 PCS00 PCS1 — — — — PCS13 PCS1� PCS11 PCS10 PDS0 PDS07 PDS0� PDS05 PDS04 PDS03 PDS0� PDS01 PDS00 IFS IFS7 IFS� IFS5 IFS4 IFS3 IFS� IFS1 IFS0 Pin-shared Function Selection Registers List – HT66F4530 Register Name Bit 7 6 5 4 3 2 1 0 PAS0 PAS07 PAS0� PAS05 PAS04 PAS03 PAS0� PAS01 PAS00 PAS1 PAS17 PAS1� PAS15 PAS14 PAS13 PAS1� PAS11 PAS10 PBS0 PBS07 PBS0� PBS05 PBS04 PBS03 PBS0� PBS01 PBS00 PBS1 — — PBS15 PBS14 PBS13 PBS1� PBS11 PBS10 PCS0 PCS07 PCS0� PCS05 PCS04 PCS03 PCS0� PCS01 PCS00 PCS1 — — PCS15 PCS14 PCS13 PCS1� PCS11 PCS10 PDS0 PDS07 PDS0� PDS05 PDS04 PDS03 PDS0� PDS01 PDS00 IFS IFS7 IFS� IFS5 IFS4 IFS3 IFS� IFS1 IFS0 Pin-shared Function Selection Registers List – HT66F4540/HT66F4550 |
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