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HT45F39 Datasheet(PDF) 21 Page - Holtek Semiconductor Inc

Part # HT45F39
Description  Ultrasonic Distance Measurement 8-bit Flash MCU
PDF  102 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F39 Datasheet(HTML) 21 Page - Holtek Semiconductor Inc

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Rev. 1.10
20
July 01, 2016
Rev. 1.10
21
July 01, 2016
HT45F39/HT45F391
Ultrasonic Distance Measurement 8-bit Flash MCU
HT45F39/HT45F391
Ultrasonic Distance Measurement 8-bit Flash MCU
In Application Programming – IAP
ThedevicesofferIAPfunctiontoupdatedataorapplicationprogramtotheflashmemory.Userscan
defineanymemorylocationfortheIAP,buttherearesomefeatureswhichtheusermusttakenote
ofintheIAP.
• Erasepage:256words/page
• Writing:4words/time
• Reading:1word/time
IAP Registers
Therearetwoaddressregisters,four16-bitdataregistersandtwocontrolregisters.Thecontrol
registersarelocatedinBank0.ReadandWriteoperationstotheFlashmemoryarecarriedoutusing
16-bitdataoperationsusingtheaddressanddataregistersandthecontrolregisters.Severalregisters
controltheoveralloperationoftheinternalFlashProgramMemory.Theaddressregistersarenamed
FARLandFARH,thedataregistersarenamedFDnLandFDnH,andthetwocontrolregisterare
namedFC0andFC1respectively.AstheFARL,FARH,FDnLandFDnHregisterstogetherwiththe
FC0andFC1controlregistersarealllocatedinBank0,theycanbedirectlyaccessedinthesame
wasasanyotherSpecialFunctionRegister.
• IAP Registers List
Name
Bit
7
6
5
4
3
2
1
0
FARL
D7
D6
D5
D4
D3
D2
D1
D0
FARH
—
—
—
—
—
D10
D9
D8
FD0L
D7
D6
D5
D4
D3
D2
D1
D0
FD0H
D15
D14
D13
D12
D11
D10
D9
D8
FD1L
D7
D6
D5
D4
D3
D2
D1
D0
FD1H
D15
D14
D13
D12
D11
D10
D9
D8
FD2L
D7
D6
D5
D4
D3
D2
D1
D0
FD2H
D15
D14
D13
D12
D11
D10
D9
D8
FD3L
D7
D6
D5
D4
D3
D2
D1
D0
FD3H
D15
D14
D13
D12
D11
D10
D9
D8
FC0
CFWEN
FMOD2
FMOD1
FMOD0
FWPEN
FWT
FRDEN
FRD
FC1
D7
D6
D5
D4
D3
D2
D1
D0
• FARL Register
Bit
7
6
5
4
3
2
1
0
Name
D7
D6
D5
D4
D3
D2
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit7~0
FlashProgramMemoryaddress
FlashProgramMemoryaddressbit7~bit0
• FARH Register
Bit
7
6
5
4
3
2
1
0
Name
—
—
—
—
—
D10
D9
D8
R/W
—
—
—
—
—
R/W
R/W
R/W
POR
—
—
—
—
—
0
0
0
Bit7~3
Reserved,cannotbeused
Bit2~0
FlashProgramMemoryaddress
FlashProgramMemoryaddressbit10~bit8



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