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HT46R003B датащи(PDF) 15 Page - Holtek Semiconductor Inc

номер детали HT46R003B
подробное описание детали  Cost-Effective A/D 8-bit OTP MCU
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
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HT46R003B датащи(HTML) 15 Page - Holtek Semiconductor Inc

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HT46R003B
Cost-Effective A/D 8-bit OTP MCU
HT46R003B
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.AllareimplementedinRAMandare8bitswidebutthelengthof
eachmemorysectionisdictatedbythetypeofmicrocontrollerchosen.ThestartaddressoftheData
Memoryforthedeviceistheaddress“00H”.
Allmicrocontrollerprogramsrequireanareaofread/writememorywheretemporarydatacanbe
storedandretrievedforuselater.ItisthisareaofRAMmemorythatisknownasGeneralPurpose
DataMemory.ThisareaofDataMemoryisfullyaccessiblebytheuserprogramforbothreading
andwritingoperations.Byusingthe“SET[m].i”and“CLR[m].i”instructionsindividualbitscan
besetorresetunderprogramcontrolgivingtheuseralargerangeofflexibilityforbitmanipulation
intheDataMemory.
G ener al
Pu r pos e
R egi st er s
S pec ia l
Pu r pos e
R egi st er s
7F H
IA R1
00 H
MP 1
01 H
40 H
3F H
64 b yt es
02 H
03 H
IA R0
MP 0
Data Memory Structure
Note:MostoftheDataMemorybitscanbedirectlymanipulatedusingthe“SET[m].i”and“CLR
[m].i”withtheexceptionofafewdedicatedbits.TheDataMemorycanalsobeaccessed
viathememorypointerregisters.
Special Purpose Data Memory
This area of Data Memory is where registers, necessary for the correct operation of the
microcontroller,arestored.Mostoftheregistersarebothreadableandwriteablebutsomeare
protectedandarereadableonly,thedetailsofwhicharelocatedundertherelevantSpecialFunction
Registersection.Notethatforlocationsthatareunused,anyreadinstructiontotheseaddresseswill
returnthevalue“00H”.


Аналогичный номер детали - HT46R003B

производительномер деталидатащиподробное описание детали
logo
Holtek Semiconductor In...
HT46R003 HOLTEK-HT46R003 Datasheet
5Mb / 83P
   Cost-Effective A/D 8-Bit OTP MCU
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Аналогичное описание - HT46R003B

производительномер деталидатащиподробное описание детали
logo
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