HT45FM2C datasheet(24/171 Pages) HOLTEK

tên linh kiện	HT45FM2C

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HT45FM2C

Brushless DC Motor Flash Type 8-Bit MCU

HT45FM2C

Brushless DC Motor Flash Type 8-Bit MCU

Preliminar�

RAM Data Memory

TheDataMemoryisavolatileareaof8-bitwideRAMinternalmemoryandisthelocationwhere

temporaryinformationisstored.Thecapacityofthisdeviceis256×8.

Structure

Dividedintotwosections,thefirstoftheseisanareaofRAM,knownastheSpecialFunctionData

Memory.Herearelocatedregisterswhicharenecessaryforcorrectoperationofthedevice.Many

oftheseregisterscanbereadfromandwrittentodirectlyunderprogramcontrol,however,some

remainprotectedfromusermanipulation.

ThesecondareaofDataMemoryisknownastheGeneralPurposeDataMemory,whichisreserved

forgeneralpurposeuse.Alllocationswithinthisareaarereadandwriteaccessibleunderprogram

control.TheSpecialPurposeDataMemoryregistersareaccessibleinallbanks,withtheexception

oftheEECregisterataddress40H,whichisonlyaccessibleinBank1.Switchingbetweenthe

differentDataMemorybanksisachievedbysettingtheBankPointertothecorrectvalue.Thestart

addressoftheDataMemoryforalldevicesistheaddress00H.

00H

7FH

80H

FFH

Data Memory Structure

HT45FM2C bảng dữ liệu(PDF) 24 Page - Holtek Semiconductor Inc