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根据所提供的文件信息,我们可以得出以下知识点: 1. NEC 78F0485单片机是一款经典的产品,由NEC电子公司生产,它的资源丰富,是学习单片机的好选择。 2. NEC电子公司与瑞萨科技公司在2010年4月1日合并,成立了瑞萨电子公司(Renesas Electronics Corporation),因此,虽然在文中仍使用NEC电子公司的名字,但文档是瑞萨电子的有效文件。 3. 瑞萨电子公司的官方网址为 ***,如果有关于产品的咨询,可以通过该网站提供的联系方式发送。 4. 文档中的信息截至发布日期是准确的,但瑞萨电子公司保留更改信息的权利,并且不提供任何预先通知。在购买或使用瑞萨电子公司的产品前,建议确认最新的产品信息。 5. 瑞萨电子公司不承担因使用其产品或技术信息而引起或与其相关的第三方专利、版权或其他知识产权侵权的责任。 6. 文档中提供的电路、软件和相关信息仅用于说明半导体产品的操作和应用实例。设计设备时,用户应全权负责将这些电路、软件和信息整合到设计中。 7. 瑞萨电子公司对于使用这些电路、软件或信息造成的任何损失不承担责任。 8. 在出口瑞萨电子公司的产品或技术时,应遵守适用的出口控制法律和法规。 由于文档内容不完整,可能还有其他的知识点未被提及。不过,基于提供的信息,以上是主要的关键点。在研究NEC 78F0485单片机时,用户应重视文档的完整性和最新性,确保使用时的准确性和合法性。同时,用户在设计相关电路和软件时,必须确保遵守知识产权相关法律,避免侵权行为,并且在产品出口时要遵循相应的法规要求。
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To our customers,
Old Company Name in Catalogs and Other Documents
On April 1
st
, 2010, NEC Electronics Corporation merged with Renesas Technology
Corporation, and Renesas Electronics Corporation took over all the business of both
companies. Therefore, although the old company name remains in this document, it is a valid
Renesas Electronics document. We appreciate your understanding.
Renesas Electronics website: http://www.renesas.com
April 1
st
, 2010
Renesas Electronics Corporation
Issued by: Renesas Electronics Corporation (http://www.renesas.com)
Send any inquiries to http://www.renesas.com/inquiry.
Notice
1. All information included in this document is current as of the date this document is issued. Such information, however, is
subject to change without any prior notice. Before purchasing or using any Renesas Electronics products listed herein, please
confirm the latest product information with a Renesas Electronics sales office. Also, please pay regular and careful attention to
additional and different information to be disclosed by Renesas Electronics such as that disclosed through our website.
2. Renesas Electronics does not assume any liability for infringement of patents, copyrights, or other intellectual property rights
of third parties by or arising from the use of Renesas Electronics products or technical information described in this document.
No license, express, implied or otherwise, is granted hereby under any patents, copyrights or other intellectual property rights
of Renesas Electronics or others.
3. You should not alter, modify, copy, or otherwise misappropriate any Renesas Electronics product, whether in whole or in part.
4. Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of
semiconductor products and application examples. You are fully responsible for the incorporation of these circuits, software,
and information in the design of your equipment. Renesas Electronics assumes no responsibility for any losses incurred by
you or third parties arising from the use of these circuits, software, or information.
5. When exporting the products or technology described in this document, you should comply with the applicable export control
laws and regulations and follow the procedures required by such laws and regulations. You should not use Renesas
Electronics products or the technology described in this document for any purpose relating to military applications or use by
the military, including but not limited to the development of weapons of mass destruction. Renesas Electronics products and
technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited
under any applicable domestic or foreign laws or regulations.
6. Renesas Electronics has used reasonable care in preparing the information included in this document, but Renesas Electronics
does not warrant that such information is error free. Renesas Electronics assumes no liability whatsoever for any damages
incurred by you resulting from errors in or omissions from the information included herein.
7. Renesas Electronics products are classified according to the following three quality grades: “Standard”, “High Quality”, and
“Specific”. The recommended applications for each Renesas Electronics product depends on the product’s quality grade, as
indicated below. You must check the quality grade of each Renesas Electronics product before using it in a particular
application. You may not use any Renesas Electronics product for any application categorized as “Specific” without the prior
written consent of Renesas Electronics. Further, you may not use any Renesas Electronics product for any application for
which it is not intended without the prior written consent of Renesas Electronics. Renesas Electronics shall not be in any way
liable for any damages or losses incurred by you or third parties arising from the use of any Renesas Electronics product for an
application categorized as “Specific” or for which the product is not intended where you have failed to obtain the prior written
consent of Renesas Electronics. The quality grade of each Renesas Electronics product is “Standard” unless otherwise
expressly specified in a Renesas Electronics data sheets or data books, etc.
“Standard”: Computers; office equipment; communications equipment; test and measurement equipment; audio and visual
equipment; home electronic appliances; machine tools; personal electronic equipment; and industrial robots.
“High Quality”: Transportation equipment (automobiles, trains, ships, etc.); traffic control systems; anti-disaster systems; anti-
crime systems; safety equipment; and medical equipment not specifically designed for life support.
“Specific”: Aircraft; aerospace equipment; submersible repeaters; nuclear reactor control systems; medical equipment or
systems for life support (e.g. artificial life support devices or systems), surgical implantations, or healthcare
intervention (e.g. excision, etc.), and any other applications or purposes that pose a direct threat to human life.
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especially with respect to the maximum rating, operating supply voltage range, movement power voltage range, heat radiation
characteristics, installation and other product characteristics. Renesas Electronics shall have no liability for malfunctions or
damages arising out of the use of Renesas Electronics products beyond such specified ranges.
9. Although Renesas Electronics endeavors to improve the quality and reliability of its products, semiconductor products have
specific characteristics such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Further,
Renesas Electronics products are not subject to radiation resistance design. Please be sure to implement safety measures to
guard them against the possibility of physical injury, and injury or damage caused by fire in the event of the failure of a
Renesas Electronics product, such as safety design for hardware and software including but not limited to redundancy, fire
control and malfunction prevention, appropriate treatment for aging degradation or any other appropriate measures. Because
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manufactured by you.
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compatibility of each Renesas Electronics product. Please use Renesas Electronics products in compliance with all applicable
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Directive. Renesas Electronics assumes no liability for damages or losses occurring as a result of your noncompliance with
applicable laws and regulations.
11. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of Renesas
Electronics.
12. Please contact a Renesas Electronics sales office if you have any questions regarding the information contained in this
document or Renesas Electronics products, or if you have any other inquiries.
(Note 1) “Renesas Electronics” as used in this document means Renesas Electronics Corporation and also includes its majority-
owned subsidiaries.
(Note 2) “Renesas Electronics product(s)” means any product developed or manufactured by or for Renesas Electronics.
PD78F0471
PD78F0481
PD78F0491
PD78F0472
PD78F0482
PD78F0492
PD78F0473
PD78F0483
PD78F0493
PD78F0474
PD78F0484
PD78F0494
PD78F0475
PD78F0485
PD78F0495
78K0/LE3
8 位单片微控制器
用户手册
78K0/LF3具有片上调试功能。
大规模生产时不要使用本产品,因为在使用片上调试功能后,从flash存储器可重写的次数受到限制这一点来看,它的可靠性
不能保证。NEC Electronics 不接受对于本产品的任何投诉。
文档编号: U18329CA2V0UD00 (第二版)
发行日期: 2007 年 9 月 NS
© NEC Electronics Corporation 2007
日本印制
78K0/LF3
用户手册 U18329CA2V0UD
2
[备忘录]
用户手册 U18329CA2V0UD 3
CMOS设备的注释
① 输入引脚处的电压波形
输入噪音或一个反射波引起的波形失真可能导致错误发生。如果由于噪音等的影响使CMOS设备的输
入电压范围保持在V
IL
(最大值)和V
IH
(最小值)之间,设备可能发生错误。在输入电平固定时以及输入
电平从V
IL
(最大值)过渡到V
IH
(最小值)时的传输期间,要防止散射噪声影响设备。
② 未使用的输入引脚的处理
CMOS设备的输入端保持开路可能导致误操作。如果一个输入引脚未被连接,则由于噪音等原因可能
会产生内部输入电平,从而导致误操作。CMOS设备的操作特性与Bipolar或NMOS设备不同。CMOS设备
的输入电平必须借助上拉或下拉电路固定在高电平或低电平。每一个未使用引脚都应该通过附加电阻连接
到V
DD
或GND。如果有可能尽量定义为输出引脚。对未使用引脚的处理因设备而异,必须遵循与设备相关
的规定和说明。
③ ESD防护措施
如果MOS设备周围有强电场,将会击穿氧化栅极,从而影响设备的运行。因此必须采取措施,尽可
能防止静电产生。一旦有静电,必须立即释放。对于环境必须有适当的控制。如果空气干燥,应当使用增
湿器。建议避免使用容易产生静电的绝缘体。半导体设备的存放和运输必须使用抗静电容器、抗静电屏蔽
袋或导电材料容器。所有的测试和测量工具包括工作台和工作面必须良好接地。操作员应当佩戴静电消除
手带以保证良好接地。不能用手直接接触半导体设备。对于装配有半导体设备的PW板也应采取类似的静
电防范措施。
④ 初始化之前的状态
在上电时MOS设备的初始状态是不确定的。在刚刚上电之后,具有复位功能的MOS设备并没有被初
始化。因此上电不能保证输出引脚的电平,I/O设置和寄存器的内容。设备在收到复位信号后才进行初始
化。具有复位功能的设备在上电后必须立即进行复位操作。
⑤ 电源开关顺序
在一个设备的内部操作和外部接口使用不同的电源的情况下,按照规定,应先在接通内部电源之后再
接通外部电源。当关闭电源时,按照规定,先关闭外部电源再关闭内部电源。如果电源开关顺序颠倒,可
能会导致设备的内部组件过电压,产生异常电流,从而引起内部组件的误操作和性能的退化。
对于每个设备电源的正确开关顺序必须依据设备的规范说明分别进行判断。
⑥ 电源关闭状态下的输入信号
不要向没有加电的设备输入信号或提供I/O上拉电源。因为输入信号或提供I/O上拉电源将引起电流注
入,从而引起设备的误操作,并产生异常电流,从而使内部组件退化。
每个设备电源关闭时的信号输入必须依据设备的规范说明分别进行判断。
剩余711页未读,继续阅读
资源评论
- lz_152196002014-11-0978F0485的中文数据手册,可参考
- hlbuxcmfzcn42016-01-19给力!找了半天,终于在这里找到了!
shy_721
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