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PDF UPD78F0974 Data sheet ( Hoja de datos )

Número de pieza UPD78F0974
Descripción (UPD78F0973 / UPD78F0974) 8-Bit Single-Chip Microcontrollers
Fabricantes NEC 
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Preliminary User’s Manual
µPD780973 Subserieswww.DataSheet4U.com
8-Bit Single-Chip Microcontrollers
µPD780973(A)
µPD78F0974
Document No. U12406EJ2V0UM00 (2nd edition)
Date Published May 1998 N CP(K)
© 1997
Printed in Japan

1 page




UPD78F0974 pdf
Regional Information
Some information contained in this document may vary from country to country. Before using any NEC
product in your application, please contact the NEC office in your country to obtain a list of authorized
representatives and distributors. They will verify:
• Device availability
• Ordering information
www.DataSheet4U.com
• 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.
NEC Electronics Inc. (U.S.)
Santa Clara, California
Tel: 408-588-6000
800-366-9782
Fax: 408-588-6130
800-729-9288
NEC Electronics (Germany) GmbH
Duesseldorf, Germany
Tel: 0211-65 03 02
Fax: 0211-65 03 490
NEC Electronics (UK) Ltd.
Milton Keynes, UK
Tel: 01908-691-133
Fax: 01908-670-290
NEC Electronics Italiana s.r.1.
Milano, Italy
Tel: 02-66 75 41
Fax: 02-66 75 42 99
NEC Electronics (Germany) GmbH
Benelux Office
Eindhoven, The Netherlands
Tel: 040-2445845
Fax: 040-2444580
NEC Electronics (France) S.A.
Velizy-Villacoublay, France
Tel: 01-30-67 58 00
Fax: 01-30-67 58 99
NEC Electronics (France) S.A.
Spain Office
Madrid, Spain
Tel: 01-504-2787
Fax: 01-504-2860
NEC Electronics (Germany) GmbH
Scandinavia Office
Taeby, Sweden
Tel: 08-63 80 820
Fax: 08-63 80 388
NEC Electronics Hong Kong Ltd.
Hong Kong
Tel: 2886-9318
Fax: 2886-9022/9044
NEC Electronics Hong Kong Ltd.
Seoul Branch
Seoul, Korea
Tel: 02-528-0303
Fax: 02-528-4411
NEC Electronics Singapore Pte. Ltd.
United Square, Singapore 1130
Tel: 65-253-8311
Fax: 65-250-3583
NEC Electronics Taiwan Ltd.
Taipei, Taiwan
Tel: 02-719-2377
Fax: 02-719-5951
NEC do Brasil S.A.
Cumbica-Guarulhos-SP, Brasil
Tel: 011-6465-6810
Fax: 011-6465-6829
J98. 2
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UPD78F0974 arduino
CONTENTS
CHAPTER 1 OUTLINE ....................................................................................................................
1.1 Features ................................................................................................................................
1.2 Applications .........................................................................................................................
1.3 Ordering Information ...........................................................................................................
1.4 Quality Grade .......................................................................................................................
1.5 Pin Configuration (Top View) .............................................................................................
1.6 78K/0 Series Product Development ...................................................................................
1.7 Block Diagram ......................................................................................................................
1.8 Outline of Function ..............................................................................................................
www.DataSheet4U.com
CHAPTER 2 PIN FUNCTION ..........................................................................................................
2.1 Pin Function List ..................................................................................................................
2.2 Description of Pin Functions ..............................................................................................
2.2.1 P00 to P07 (Port 0) .....................................................................................................................
2.2.2 P10 to P14 (Port 1) .....................................................................................................................
2.2.3 P20 to P27 (Port 2) .....................................................................................................................
2.2.4 P30 to P37 (Port 3) .....................................................................................................................
2.2.5 P40 to P44 (Port 4) .....................................................................................................................
2.2.6 P50 to P54 (Port 5) .....................................................................................................................
2.2.7 P60, P61 (Port 6) ........................................................................................................................
2.2.8 P81 to P87 (Port 8) .....................................................................................................................
2.2.9 P90 to P97 (Port 9) .....................................................................................................................
2.2.10 COM0 to COM3 ..........................................................................................................................
2.2.11 VLCD .............................................................................................................................................
2.2.12 AVREF ..........................................................................................................................................
2.2.13 AVSS ............................................................................................................................................
2.2.14 RESET ........................................................................................................................................
2.2.15 X1 and X2 ...................................................................................................................................
2.2.16 SMVDD .........................................................................................................................................
2.2.17 SMVSS .........................................................................................................................................
2.2.18 VDD ..............................................................................................................................................
2.2.19 VSS ..............................................................................................................................................
2.2.20 VPP (µPD78F0974) ......................................................................................................................
2.2.21 IC (µPD780973(A)) .....................................................................................................................
2.3 Input/output Circuits and Recommended Connection of Unused Pins .........................
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CHAPTER 3 CPU ARCHITECTURE ..............................................................................................
3.1 Memory Spaces ...................................................................................................................
3.1.1 Internal program memory space .................................................................................................
3.1.2 Internal data memory space .......................................................................................................
3.1.3 Special function register (SFR) area ...........................................................................................
3.1.4 Data memory addressing ............................................................................................................
3.2 Processor Registers ............................................................................................................
3.2.1 Control registers .........................................................................................................................
3.2.2 General registers ........................................................................................................................
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