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PDF D78F0522 Data sheet ( Hoja de datos )
| Número de pieza | D78F0522 | |
| Descripción | UPD78F0522 | |
| Fabricantes | NEC | |
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Preliminary User’s Manual
78K0/KD2
8-Bit Single-Chip Microcontrollers
µPD78F0521
µPD78F0522
µPD78F0523
µPD78F0524
µPD78F0525
µPD78F0526
µPD78F0527
µPD78F0527D
The µPD78F0527D has an on-chip debug function.
Do not use this product for mass production because its reliability cannot be guaranteed after the on-chip debug function
has been used, due to issues with respect to the number of times the flash memory can be rewritten. NEC Electronics
does not accept complaints concerning this product.
Document No. U17312EJ2V1UD00 (2nd edition)
Date Published August 2005 NS CP(K)
Printed in Japan
2005
Free Datasheet http://www.Datasheet4U.com
1 page  
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: 0211-65030
• 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: 040-265 40 10
• Tyskland Filial
Taeby, Sweden
Tel: 08-63 87 200
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: 021-5888-5400
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
J05.6
Preliminary User’s Manual U17312EJ2V1UD
5
Free Datasheet http://www.Datasheet4U.com
5 Page 
6.3 Registers Controlling Clock Generator ................................................................................... 125
6.4 System Clock Oscillator ............................................................................................................ 134
6.4.1 X1 oscillator ...................................................................................................................................134
6.4.2 XT1 oscillator .................................................................................................................................134
6.4.3 When subsystem clock is not used ................................................................................................137
6.4.4 Internal high-speed oscillator .........................................................................................................137
6.4.5 Internal low-speed oscillator ..........................................................................................................137
6.4.6 Prescaler........................................................................................................................................137
6.5 Clock Generator Operation ....................................................................................................... 138
6.6 Controlling Clock ....................................................................................................................... 141
6.6.1 Controlling high-speed system clock..............................................................................................141
6.6.2 Example of controlling internal high-speed oscillation clock ..........................................................144
6.6.3 Example of controlling subsystem clock ........................................................................................146
6.6.4 Example of controlling internal low-speed oscillation clock............................................................148
6.6.5 Clocks supplied to CPU and peripheral hardware .........................................................................148
6.6.6 CPU clock status transition diagram ..............................................................................................149
6.6.7 Condition before changing CPU clock and processing after changing CPU clock .........................154
6.6.8 Time required for switchover of CPU clock and main system clock ...............................................155
6.6.9 Conditions before clock oscillation is stopped................................................................................156
6.6.10 Peripheral hardware and source clocks .......................................................................................157
CHAPTER 7 16-BIT TIMER/EVENT COUNTER 00........................................................................... 158
7.1 Functions of 16-Bit Timer/Event Counter 00 ........................................................................... 158
7.2 Configuration of 16-Bit Timer/Event Counter 00..................................................................... 159
7.3 Registers Controlling 16-Bit Timer/Event Counter 00 ............................................................ 163
7.4 Operation of 16-Bit Timer/Event Counter 00 ........................................................................... 170
7.4.1 Interval timer operation ..................................................................................................................170
7.4.2 Square wave output operation .......................................................................................................173
7.4.3 External event counter operation ...................................................................................................176
7.4.4 Operation in clear & start mode entered by TI000 pin valid edge input..........................................179
7.4.5 Free-running timer operation .........................................................................................................192
7.4.6 PPG output operation ....................................................................................................................201
7.4.7 One-shot pulse output operation....................................................................................................204
7.4.8 Pulse width measurement operation..............................................................................................209
7.5 Special Use of TM00 .................................................................................................................. 217
7.5.1 Rewriting CR010 during TM00 operation.......................................................................................217
7.5.2 Setting LVS00 and LVR00 .............................................................................................................217
7.6 Cautions for 16-Bit Timer/Event Counter 00 ........................................................................... 219
CHAPTER 8 8-BIT TIMER/EVENT COUNTERS 50 AND 51 .......................................................... 223
8.1 Functions of 8-Bit Timer/Event Counters 50 and 51............................................................... 223
8.2 Configuration of 8-Bit Timer/Event Counters 50 and 51 ........................................................ 223
8.3 Registers Controlling 8-Bit Timer/Event Counters 50 and 51 ............................................... 226
8.4 Operations of 8-Bit Timer/Event Counters 50 and 51............................................................. 231
8.4.1 Operation as interval timer.............................................................................................................231
8.4.2 Operation as external event counter ..............................................................................................233
8.4.3 Square-wave output operation .......................................................................................................234
8.4.4 PWM output operation ...................................................................................................................235
Preliminary User’s Manual U17312EJ2V1UD
11
Free Datasheet http://www.Datasheet4U.com
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet D78F0522.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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| D78F0524 | UPD78F0524 | NEC |
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