Special Attention and Precautions
PanaXSeries is a trademark of Matsushita Electric Industrial Co., Ltd.
The other corporation names, logotype and product names written in this book are trademarks or registered trademarks of their
corresponding corporations.
Request for your special attention and precautions in using the technical information
and semiconductors described in this book
(1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of
the products or technologies described in this book and controlled under the "Foreign Exchange and Foreign
Trade Law" is to be exported or taken out of Japan.
(2) The technical information described in this book is limited to showing representative characteristics and
applied circuits examples of the products. It neither warrants non-infringement of intellectual property right
or any other rights owned by our company or a third party, nor grants any license.
(3) We are not liable for the infringement of rights owned by a third party arising out of the use of the product or
technologies as described in this book.
(4) The products described in this book are intended to be used for standard applications or general electronic
equipment (such as office equipment, communications equipment, measuring instruments and household
appliances).
Consult our sales staff in advance for information on the following applications:
• Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion
equipment, life support systems and safety devices) in which exceptional quality and reliability are required,
or if the failure or malfunction of the products may directly jeopardize life or harm the human body.
• Any applications other than the standard applications intended.
(5) The products and product specifications described in this book are subject to change without notice for
modification and/or improvement. At the final stage of your design, purchasing, or use of the products,
therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications
satisfy your requirements.
(6) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating,
the range of operating power supply voltage, and heat radiation characteristics. Otherwise, we will not be
liable for any defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of
break down and failure mode, possible to occur to semiconductor products. Measures on the systems such as
redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent
physical injury, fire, social damages, for example, by using the products.
(7) When using products for which damp-proof packing is required, observe the conditions (including shelf life
and amount of time let standing of unsealed items) agreed upon when specification sheets are individually
exchanged.
(8) This book may be not reprinted or reproduced whether wholly or partially, without the prior written
permission of Matsushita Electric Industrial Co., Ltd.
If you have any inquiries or questions about this book or our semiconductors, please contact one of our sales
offices listed at the back of this book.
About This Manual
■
Organization
In this LSI manual, this LSI functions are presented in the following order : overview, basic CPU
functions, interrupt functions, port functions, timer functions, serial functions, and other peripheral
hardware functions. Each section contains overview of function, block diagram, control register,
operation, and setting example.
■
Manual Configuration
Each section of this manual consists of a title, summary, main text, key information, precautions and
warnings, and references.The layout and definition of each section are shown below.
Header
Chapter number and
Chapter title
Section title
Sub section title
chapter 2
Basic CPU
2.8 Reset
2.8.1
Reset operation
the CPU contents are reset and registers are intialized when the NRST pin (P
27) is pulled to low.
Initiating a Reset
There are two methods to initiate areset.
(1) Drive the NRST pin low for at least four clock cycles.
NTST pin should be holded "low" for more than 4 clock cycles (200 ns a
t a 20 NHz)
Main text
NRST pin
4 clock cycles
(200 ns at a 20 MHz)
Figure:2.8.1 MInimum Reset PUlse Width
(2 Setting the P2OUT7 flag of the P2OUT register to "0" outputs low level at P
27 (NRST) pin. And transfering to reset by program (software reset) can be
executed. If the internal LSI is reset and register is initiated, the P2OUT
7 flag becomes "1" and reset is released.
Key information
Important information
from the text.
On this LSI, the starting mode is NORMAL mode that high oscillation i
s the base clock.
Precautions and
warnings
Precautions are listed
in case.
Be sure to read these
of lost functionality
or damage.
When the power voltage low circuit is connected to NTST pin, circuit t
hat gives pulse for enough low level time at sudeen unconnected. And r
set can be generated even if its pulse is low level as the oscillation
clock is under 4 clocks,take notice of noise.
footer
Page # and
section title.
II-48
Reset
<About This Manual - 1>
■
Finding Desired Information
This manual provides three methods for finding desired information quickly and easily.
1.Consult the index at the front of the manual to locate the beginning of each section.
2.Consult the table of contents at the front of the manual to locate desired titles.
3.A chapter number and its chapter title are located at the top corner of each page, and section titles are
located at the bottom corner of each page.
■
Related Manuals
Note that the following related documents are available.
• "MN101C Series LSI user's Manual"
<Describes the device hardware>
• "MN101C Series Instruction Manual"
<Describes the instruction set.>
• " Series C Compiler User's Manual: Usage Guide"
<Describes the installation, the commands, and options of the C Compiler.>
• "MN101C Series C Compiler User's Manual: Language Description"
<Describes the syntax of the C Compiler.>
• "MN101C Series C Compiler User's Manual: Library Reference"
<Describes the standard library of the C Compiler.>
• "MN101C Series Cross-assembler User's Manual"
<Describes the assembler syntax and notation.>
• "MN101C Series C Source Code Debugger User's Manual"
<Describes the use of C source code debugger.>
• About This Manual "MN101C Series PanaX Series Installation Manual"
<Describes the installation of C compiler, cross-assembler and C source code debugger and the
procedure for bringing up the in-circuit emulator.>
<About This Manual - 2>
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
