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UPD780138 Datasheet(PDF) 11 Page - NEC

No. de Pieza. UPD780138
Descripción  8-Bit Single-Chip Microcontrollers
Descarga  558 Pages
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Fabricante  NEC [NEC]
Página de inicio  http://www.nec.com/
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UPD780138 Datasheet(HTML) 11 Page - NEC

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User’s Manual U16228EJ2V0UD
11
3.2
Processor Registers .................................................................................................................. 68
3.2.1
Control registers .............................................................................................................................68
3.2.2
General-purpose registers ..............................................................................................................72
3.2.3
Special Function Registers (SFRs).................................................................................................73
3.3
Instruction Address Addressing ..............................................................................................78
3.3.1
Relative addressing ........................................................................................................................78
3.3.2
Immediate addressing ....................................................................................................................79
3.3.3
Table indirect addressing ...............................................................................................................80
3.3.4
Register addressing........................................................................................................................80
3.4
Operand Address Addressing ..................................................................................................81
3.4.1
Implied addressing .........................................................................................................................81
3.4.2
Register addressing........................................................................................................................82
3.4.3
Direct addressing............................................................................................................................83
3.4.4
Short direct addressing...................................................................................................................84
3.4.5
Special function register (SFR) addressing ....................................................................................85
3.4.6
Register indirect addressing ...........................................................................................................86
3.4.7
Based addressing...........................................................................................................................87
3.4.8
Based indexed addressing .............................................................................................................88
3.4.9
Stack addressing ............................................................................................................................89
CHAPTER 4 PORT FUNCTIONS ........................................................................................................... 90
4.1
Port Functions............................................................................................................................ 90
4.2
Port Configuration ..................................................................................................................... 92
4.2.1
Port 0..............................................................................................................................................93
4.2.2
Port 1..............................................................................................................................................97
4.2.3
Port 2............................................................................................................................................102
4.2.4
Port 3............................................................................................................................................103
4.2.5
Port 4............................................................................................................................................105
4.2.6
Port 5............................................................................................................................................106
4.2.7
Port 6............................................................................................................................................107
4.2.8
Port 7............................................................................................................................................108
4.2.9
Port 12 ..........................................................................................................................................109
4.2.10
Port 13 ..........................................................................................................................................110
4.2.11
Port 14 ..........................................................................................................................................111
4.3
Registers Controlling Port Function...................................................................................... 112
4.4
Port Function Operations........................................................................................................ 116
4.4.1
Writing to I/O port .........................................................................................................................116
4.4.2
Reading from I/O port ...................................................................................................................116
4.4.3
Operations on I/O port ..................................................................................................................116
CHAPTER 5 CLOCK GENERATOR .................................................................................................... 117
5.1
Functions of Clock Generator ................................................................................................ 117
5.2
Configuration of Clock Generator.......................................................................................... 117
5.3
Registers Controlling Clock Generator ................................................................................. 119
5.4
System Clock Oscillator.......................................................................................................... 126


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