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Número de pieza | D789477 | |
Descripción | UPD789477 | |
Fabricantes | NEC | |
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User’s Manual
µPD789478 Subseries
8-Bit Single-Chip Microcontrollers
µPD789477
µPD789478
µPD789479
µPD78F9478
µPD78F9479
Document No. U15400EJ3V0UD00 (3rd edition)
Date Published May 2003 N CP(K)
Printed in Japan
©
2001
Datasheet pdf - http://www.DataSheet4U.net/
1 page www.DataSheet.co.kr
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
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
J03.4
User’s Manual U15400EJ3V0UD
5
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3.1.2 Internal data memory space ......................................................................................................... 52
3.1.3 Special function register (SFR) area............................................................................................. 52
3.1.4 Data memory addressing.............................................................................................................. 53
3.2 Processor Registers .................................................................................................................. 58
3.2.1 Control registers ........................................................................................................................... 58
3.2.2 General-purpose registers ............................................................................................................ 61
3.2.3 Special function registers (SFRs) ................................................................................................. 62
3.3 Instruction Address Addressing .............................................................................................. 66
3.3.1 Relative addressing ...................................................................................................................... 66
3.3.2 Immediate addressing .................................................................................................................. 67
3.3.3 Table indirect addressing.............................................................................................................. 68
3.3.4 Register addressing...................................................................................................................... 68
3.4 Operand Address Addressing .................................................................................................. 69
3.4.1 Direct addressing.......................................................................................................................... 69
3.4.2 Short direct addressing................................................................................................................. 70
3.4.3 Special function register (SFR) addressing .................................................................................. 71
3.4.4 Register addressing...................................................................................................................... 72
3.4.5 Register indirect addressing ......................................................................................................... 73
3.4.6 Based addressing ......................................................................................................................... 74
3.4.7 Stack addressing .......................................................................................................................... 74
CHAPTER 4 PORT FUNCTIONS ........................................................................................................... 75
4.1 Port Functions............................................................................................................................ 75
4.2 Port Configuration ..................................................................................................................... 76
4.2.1 Port 0 ............................................................................................................................................ 77
4.2.2 Port 1 ............................................................................................................................................ 78
4.2.3 Port 2 ............................................................................................................................................ 79
4.2.4 Port 3 ............................................................................................................................................ 84
4.2.5 Port 5 ............................................................................................................................................ 86
4.2.6 Port 6 ............................................................................................................................................ 87
4.2.7 Port 7 ............................................................................................................................................ 89
4.2.8 Port 8 ............................................................................................................................................ 90
4.3 Registers Controlling Port Function ........................................................................................ 91
4.4 Port Function Operation............................................................................................................ 94
4.4.1 Writing to I/O port.......................................................................................................................... 94
4.4.2 Reading from I/O port ................................................................................................................... 94
4.4.3 Arithmetic operation of I/O port ..................................................................................................... 94
CHAPTER 5 CLOCK GENERATOR ...................................................................................................... 95
5.1 Clock Generator Functions....................................................................................................... 95
5.2 Clock Generator Configuration ................................................................................................ 95
5.3 Registers Controlling Clock Generator ................................................................................... 98
5.4 System Clock Oscillators ........................................................................................................ 101
5.4.1 Main system clock oscillator ....................................................................................................... 101
User’s Manual U15400EJ3V0UD
11
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11 Page |
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