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PDF UPD78F0537 Data sheet ( Hoja de datos )

Número de pieza UPD78F0537
Descripción 8-Bit Single-Chip Microcontrollers
Fabricantes NEC 
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No Preview Available ! UPD78F0537 Hoja de datos, Descripción, Manual

Preliminary User’s Manual
78K0/KE2
8-Bit Single-Chip Microcontrollers
µPD78F0531
µPD78F0532
µPD78F0533
µPD78F0534
µPD78F0535
µPD78F0536
µPD78F0537
µPD78F0537D
The µPD78F0537D 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
Document No. U17260EJ3V1UD00 (3rd edition)
Date Published August 2005 N CP(K)
Printed in Japan
2004

1 page




UPD78F0537 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
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 U17260EJ3V1UD
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UPD78F0537 arduino
6.1 Functions of Clock Generator .............................................................................................. 134
6.2 Configuration of Clock Generator........................................................................................ 135
6.3 Registers Controlling Clock Generator ............................................................................... 137
6.4 System Clock Oscillator........................................................................................................ 146
6.4.1 X1 oscillator .............................................................................................................................146
6.4.2 XT1 oscillator ...........................................................................................................................146
6.4.3 When subsystem clock is not used ..........................................................................................149
6.4.4 Internal high-speed oscillator ...................................................................................................149
6.4.5 Internal low-speed oscillator.....................................................................................................149
6.4.6 Prescaler..................................................................................................................................149
6.5 Clock Generator Operation ................................................................................................... 150
6.6 Controlling Clock ................................................................................................................... 153
6.6.1 Controlling high-speed system clock........................................................................................153
6.6.2 Example of controlling internal high-speed oscillation clock.....................................................156
6.6.3 Example of controlling subsystem clock...................................................................................158
6.6.4 Example of controlling internal low-speed oscillation clock ......................................................160
6.6.5 Clocks supplied to CPU and peripheral hardware....................................................................160
6.6.6 CPU clock status transition diagram ........................................................................................161
6.6.7 Condition before changing CPU clock and processing after changing CPU clock ...................166
6.6.8 Time required for switchover of CPU clock and main system clock .........................................167
6.6.9 Conditions before clock oscillation is stopped..........................................................................168
6.6.10 Peripheral hardware and source clocks ...................................................................................169
CHAPTER 7 16-BIT TIMER/EVENT COUNTERS 00 AND 01 ........................................................ 170
7.1 Functions of 16-Bit Timer/Event Counters 00 and 01 ........................................................ 170
7.2 Configuration of 16-Bit Timer/Event Counters 00 and 01.................................................. 171
7.3 Registers Controlling 16-Bit Timer/Event Counters 00 and 01 ......................................... 176
7.4 Operation of 16-Bit Timer/Event Counters 00 and 01 ........................................................ 188
7.4.1 Interval timer operation ............................................................................................................188
7.4.2 Square wave output operation .................................................................................................191
7.4.3 External event counter operation .............................................................................................194
7.4.4 Operation in clear & start mode entered by TI00n pin valid edge input....................................197
7.4.5 Free-running timer operation....................................................................................................213
7.4.6 PPG output operation...............................................................................................................222
7.4.7 One-shot pulse output operation..............................................................................................225
7.4.8 Pulse width measurement operation ........................................................................................230
7.5 Special Use of TM0n .............................................................................................................. 239
7.5.1 Rewriting CR01n during TM0n operation .................................................................................239
7.5.2 Setting LVS0n and LVR0n .......................................................................................................239
7.6 Cautions for 16-Bit Timer/Event Counters 00 and 01......................................................... 241
CHAPTER 8 8-BIT TIMER/EVENT COUNTERS 50 AND 51 .......................................................... 245
8.1 Functions of 8-Bit Timer/Event Counters 50 and 51 .......................................................... 245
8.2 Configuration of 8-Bit Timer/Event Counters 50 and 51.................................................... 245
8.3 Registers Controlling 8-Bit Timer/Event Counters 50 and 51 ........................................... 248
8.4 Operations of 8-Bit Timer/Event Counters 50 and 51 ........................................................ 253
8.4.1 Operation as interval timer .......................................................................................................253
8.4.2 Operation as external event counter ........................................................................................255
Preliminary User’s Manual U17260EJ3V1UD
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