Cautions
Keep safety first in your circuit designs!
1.
Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is
always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or
property damage.
Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i)
placement of substitutive, auxiliary circuits, (ii) use of nonflammable material or (iii) prevention against any malfunction or
mishap.
Notes regarding these materials
1.
These materials are intended as a reference to assist our customers in the selection of the Renesas Technology Corp. product
best suited to the customer's application; they do not convey any license under any intellectual property rights, or any other
rights, belonging to Renesas Technology Corp. or a third party.
2.
Renesas Technology Corp. assumes no responsibility for any damage, or infringement of any third-party's rights, originating in
the use of any product data, diagrams, charts, programs, algorithms, or circuit application examples contained in these
materials.
3.
All information contained in these materials, including product data, diagrams, charts, programs and algorithms represents
information on products at the time of publication of these materials, and are subject to change by Renesas Technology Corp.
without notice due to product improvements or other reasons. It is therefore recommended that customers contact Renesas
Technology Corp. or an authorized Renesas Technology Corp. product distributor for the latest product information before
purchasing a product listed herein.
The information described here may contain technical inaccuracies or typographical errors.
Renesas Technology Corp. assumes no responsibility for any damage, liability, or other loss rising from these inaccuracies or
errors.
Please also pay attention to information published by Renesas Technology Corp. by various means, including the Renesas
Technology Corp. Semiconductor home page (http://www.renesas.com).
4.
When using any or all of the information contained in these materials, including product data, diagrams, charts, programs, and
algorithms, please be sure to evaluate all information as a total system before making a final decision on the applicability of
the information and products. Renesas Technology Corp. assumes no responsibility for any damage, liability or other loss
resulting from the information contained herein.
5.
Renesas Technology Corp. semiconductors are not designed or manufactured for use in a device or system that is used under
circumstances in which human life is potentially at stake. Please contact Renesas Technology Corp. or an authorized Renesas
Technology Corp. product distributor when considering the use of a product contained herein for any specific purposes, such
as apparatus or systems for transportation, vehicular, medical, aerospace, nuclear, or undersea repeater use.
6.
The prior written approval of Renesas Technology Corp. is necessary to reprint or reproduce in whole or in part these
materials.
7.
If these products or technologies are subject to the Japanese export control restrictions, they must be exported under a license
from the Japanese government and cannot be imported into a country other than the approved destination.
Any diversion or reexport contrary to the export control laws and regulations of Japan and/or the country of destination is
prohibited.
8.
Please contact Renesas Technology Corp. for further details on these materials or the products contained therein.
Rev. 5.00, 12/03, page
iv
of xxx
General Precautions on Handling of Product
1. Treatment of NC Pins
Note: Do not connect anything to the NC pins.
The NC (not connected) pins are either not connected to any of the internal circuitry or are
they are used as test pins or to reduce noise. If something is connected to the NC pins, the
operation of the LSI is not guaranteed.
2. Treatment of Unused Input Pins
Note: Fix all unused input pins to high or low level.
Generally, the input pins of CMOS products are high-impedance input pins. If unused pins
are in their open states, intermediate levels are induced by noise in the vicinity, a pass-
through current flows internally, and a malfunction may occur.
3. Processing before Initialization
Note: When power is first supplied, the product’s state is undefined.
The states of internal circuits are undefined until full power is supplied throughout the chip
and a low level is input on the reset pin. During the period where the states are undefined,
the register settings and the output state of each pin are also undefined. Design your
system so that it does not malfunction because of processing while it is in this undefined
state. For those products which have a reset function, reset the LSI immediately after the
power supply has been turned on.
4. Prohibition of Access to Undefined or Reserved Addresses
Note: Access to undefined or reserved addresses is prohibited.
The undefined or reserved addresses may be used to expand functions, or test registers
may have been be allocated to these addresses. Do not access these registers; the system’s
operation is not guaranteed if they are accessed.
Rev. 5.00, 12/03, page
v
of xxx
PCB设计
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
