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PDF UPD789071A Data sheet ( Hoja de datos )

Número de pieza UPD789071A
Descripción 8-bit single-chip microcomputer
Fabricantes NEC 
Logotipo NEC Logotipo



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No Preview Available ! UPD789071A Hoja de datos, Descripción, Manual

User’s Manual
µPD789074 Subseries
8-Bit Single-Chip Microcontrollers
µPD789071
µPD789072
µPD789074
µPD78F9076www.DataSheet4U.com
µPD789071(A)
µPD789072(A)
µPD789074(A)
Document No. U14801EJ3V0UD00 (3rd edition)
Date Published July 2003 N CP(K)
©
Printed in Japan

1 page




UPD789071A pdf
Regional Information
Some information contained in this document may vary from country to country. Before using any NEC
Electronics product in your application, pIease contact the NEC Electronics office in your country to
obtain a list of authorized representatives and distributors. They will verify:
Device availability
Ordering information
Product release schedule
Availability of related technical literature
Development environment specifications (for example, specifications for third-party tools and
components, host computers, power plugs, AC supply voltages, and so forth)
Network requirements
In addition, trademarks, registered trademarks, export restrictions, and other legal issues may also vary
from country to country.
[GLOBAL SUPPORT]
http://www.necel.com/en/support/support.html
NEC Electronics America, Inc. (U.S.)
Santa Clara, California
Tel: 408-588-6000
800-366-9782
www.DataSheet4U.com
NEC Electronics (Europe) GmbH
Duesseldorf, Germany
Tel: 0211-65 03 01
Sucursal en España
Madrid, Spain
Tel: 091-504 27 87
Succursale Française
Vélizy-Villacoublay, France
Tel: 01-30-67 58 00
Filiale Italiana
Milano, Italy
Tel: 02-66 75 41
Branch The Netherlands
Eindhoven, The Netherlands
Tel: 040-244 58 45
Tyskland Filial
Taeby, Sweden
Tel: 08-63 80 820
NEC Electronics Hong Kong Ltd.
Hong Kong
Tel: 2886-9318
NEC Electronics Hong Kong Ltd.
Seoul Branch
Seoul, Korea
Tel: 02-558-3737
NEC Electronics Shanghai, Ltd.
Shanghai, P.R. China
Tel: 021-6841-1138
NEC Electronics Taiwan Ltd.
Taipei, Taiwan
Tel: 02-2719-2377
NEC Electronics Singapore Pte. Ltd.
Novena Square, Singapore
Tel: 6253-8311
United Kingdom Branch
Milton Keynes, UK
Tel: 01908-691-133
Users Manual U14801EJ3V0UD
J03.4
5

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UPD789071A arduino
3.3.3 Table indirect addressing ............................................................................................................55
3.3.4 Register addressing ....................................................................................................................55
3.4 Operand Address Addressing ..................................................................................................56
3.4.1 Direct addressing ........................................................................................................................56
3.4.2 Short direct addressing ...............................................................................................................57
3.4.3 Special function register (SFR) addressing.................................................................................58
3.4.4 Register addressing ....................................................................................................................59
3.4.5 Register indirect addressing........................................................................................................60
3.4.6 Based addressing........................................................................................................................61
3.4.7 Stack addressing.........................................................................................................................61
CHAPTER 4 PORT FUNCTIONS ...........................................................................................................62
4.1 Port Functions ............................................................................................................................62
4.2 Port Configuration......................................................................................................................64
4.2.1 Port 0...........................................................................................................................................64
4.2.2 Port 1...........................................................................................................................................65
4.2.3 Port 2...........................................................................................................................................66
4.2.4 Port 3...........................................................................................................................................70
4.3 Port Function Control Registers...............................................................................................71
4.4 Operation of Port Functions......................................................................................................74
4.4.1 Writing to I/O port ........................................................................................................................74
4.4.2 Reading from I/O port ..................................................................................................................74
4.4.3 Arithmetic operation of I/O port ...................................................................................................74
CHAPTER 5 CLOCK GENERATOR.......................................................................................................75
5.1
5.2
www.DataSheet4U.co5m.3
5.4
5.5
5.6
Clock Generator Functions .......................................................................................................75
Clock Generator Configuration.................................................................................................75
Clock Generator Control Register ............................................................................................76
System Clock Oscillators ..........................................................................................................77
5.4.1 System clock oscillator ................................................................................................................77
5.4.2 Examples of incorrect resonator connection ...............................................................................78
5.4.3 Frequency divider........................................................................................................................79
Clock Generator Operation .......................................................................................................80
Changing Setting of CPU Clock................................................................................................81
5.6.1 Time required for switching CPU clock .......................................................................................81
5.6.2 Switching CPU clock ...................................................................................................................81
CHAPTER 6 16-BIT TIMER 90 ..............................................................................................................82
6.1 Functions of 16-Bit Timer 90 .....................................................................................................82
6.2 Configuration of 16-Bit Timer 90...............................................................................................82
6.3 Control Registers of 16-Bit Timer 90 ........................................................................................85
6.4 Operation of 16-Bit Timer 90 .....................................................................................................89
6.4.1 Operation as timer interrupt.........................................................................................................89
6.4.2 Operation as timer output............................................................................................................91
User’s Manual U14801EJ3V0UD
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