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HT46R004 Fiches technique(PDF) 16 Page - Holtek Semiconductor Inc

No de pièce HT46R004
Description  Cost-Effective A/D 8-Bit OTP MCU
Download  84 Pages
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Fabricant  HOLTEK [Holtek Semiconductor Inc]
Site Internet  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT46R004 Fiches technique(HTML) 16 Page - Holtek Semiconductor Inc

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HT46R004
Cost-Effective A/D 8-Bit OTP MCU
RAM Data Memory
TheDataMemoryisavolatileareaof8-bitwideRAMinternalmemoryandisthelocationwhere
temporaryinformationisstored.
Structure
Dividedintotwosections,thefirstoftheseisanareaofRAMwherespecialfunctionregistersare
located.Theseregistershavefixedlocationsandarenecessaryforcorrectoperationofthedevice.
Manyoftheseregisterscanbereadfromandwrittentodirectlyunderprogramcontrol,however,
someremainprotectedfromusermanipulation.ThesecondareaofDataMemoryisreservedfor
generalpurposeuse.Alllocationswithinthisareaarereadandwriteaccessibleunderprogram
control.
ThetwosectionsofDataMemory,theSpecialPurposeandGeneralPurposeDataMemoryare
locatedatconsecutivelocations.AllareimplementedinRAMandare8bitswide.Thestartaddress
ofthedeviceDataMemoryistheaddress“00H”.
Allmicrocontrollerprogramsrequireanareaofread/writememorywheretemporarydatacanbe
storedandretrievedforuselater.ItisthisareaofRAMmemorythatisknownasGeneralPurpose
DataMemory.ThisareaofDataMemoryisfullyaccessiblebytheuserprogramforbothreading
andwritingoperations.Byusingthe“SET[m].i”and“CLR[m].i”instructionsindividualbitscan
besetorresetunderprogramcontrolgivingtheuseralargerangeofflexibilityforbitmanipulation
intheDataMemory.
Data Memory Structure
Note:MostoftheDataMemorybitscanbedirectlymanipulatedusingthe“SET[m].i”and“CLR
[m].i”withtheexceptionofafewdedicatedbits.TheDataMemorycanalsobeaccessed
viathememorypointerregisters.


Numéro de pièce similaire - HT46R004

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Description similaire - HT46R004

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