Common to 78K/0 Series

www.DataSheet4U.com User’s Manual 78K/0 Series Instructions Common to 78K/0 Series Document No. U12326EJ4V0UM00 (4th edition) Date Published October 2001 N CP(K) © Printed in Japan 1995 www.DataSheet4U.com [MEMO] 2 User's Manual U12326EJ4V0UM www.DataSheet4U.com NOTES FOR CMOS DEVICES 1 PRECAUTION AGAINST ESD FOR SEMICONDUCTORS Note: Strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide and ultimately degrade the device operation. Steps must be taken to stop generation of static electricity as much as possible, and quickly dissipate it once, when it has occurred. Environmental control must be adequate. When it is dry, humidifier should be used. It is recommended to avoid using insulators that easily build static electricity. Semiconductor devices must be stored and transported in an anti-static container, static shielding bag or conductive material. All test and measurement tools including work bench and floor should be grounded. The operator should be grounded using wrist strap. Semiconductor devices must not be touched with bare hands. Similar precautions need to be taken for PW boards with semiconductor devices on it. 2 HANDLING OF UNUSED INPUT PINS FOR CMOS Note: No connection for CMOS device inputs can be cause of malfunction. If no connection is provided to the input pins, it is possible that an internal input level may be generated due to noise, etc., hence causing malfunction. CMOS devices behave differently than Bipolar or NMOS devices. Input levels of CMOS devices must be fixed high or low by using a pull-up or pull-down circuitry. Each unused pin should be connected to V DD or GND with a resistor, if it is considered to have a possibility of being an output pin. All handling related to the unused pins must be judged device by device and related specifications governing the devices. 3 STATUS BEFORE INITIALIZATION OF MOS DEVICES Note: Power-on does not necessarily define initial status of MOS device. Production process of MOS does not define the initial operation status of the device. Immediately after the power source is turned ON, the devices with reset function have not yet been initialized. Hence, power-on does not guarantee out-pin levels, I/O settings or contents of registers. Device is not initialized until the reset signal is received. Reset operation must be executed immediately after power-on for devices having reset function. IEBus is a trademark of NEC Corporation. Caution: Purchase of NEC I 2C components conveys a license under the Philips I2C Patent Rights to use these components in an I 2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. User's Manual U12326EJ4V0UM 3 www.DataSheet4U.com The export of these products from Japan is regulated by the Japanese government. The export of some or all of these products may be prohibited without governmental license. To export or re-export some or all of these products from a country other than Japan may also be prohibited without a license from that country. Please call an NEC sales representative. • The information in this document is current as of August, 2001. The information is subject to change without notice. For actual design-in, refer to the latest publications of NEC's data sheets or data books, etc., for the most up-to-date specifications of NEC semiconductor products. Not all products and/or types are available in every country. Please check with an NEC sales representative for availability and additional information. • No part of this document may be copied or reproduced in any form or by any means without prior written consent of NEC. NEC assumes no responsibility for any errors that may appear in this document. • NEC 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 NEC semiconductor products listed in this document or any other liability arising from the use of such products. No license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC or others. • Descriptions of circuits, software and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. The incorporation of these circuits, software and information in the design of customer's equipment shall be done under the full responsibility of customer. NEC assumes no responsibility for any losses incurred by customers or third parties arising from the use of these circuits, software and information. • While NEC endeavours to enhance the quality, reliability and safety of NEC semiconductor products, customers agree and acknowledge that the possibility of defects thereof cannot be eliminated entirely. To minimize risks of damage to property or injury (including death) to persons arising from defects in NEC semiconductor products, customers must incorporate sufficient safety measures in their design, such as redundancy, fire-containment, and anti-failure features. • NEC semiconductor products are classified into the following three quality grades: "Standard", "Special" and "Specific". The "Specific" quality grade applies only to semiconductor products developed based on a customer-designated "quality assurance program" for a specific application. The recommended applications of a semiconductor product depend on its quality grade, as indicated below. Customers must check the quality grade of each semiconductor product before using it in a particular application. "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 "Special": 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, life support systems and medical equipment for life support, etc. The quality grade of NEC semiconductor products is "Standard" unless otherwise expressly specified in NEC's data sheets or data books, etc. If customers wish to use NEC semiconductor products in applications not intended by NEC, they must contact an NEC sales representative in advance to determine NEC's willingness to support a given application. (Note) (1) "NEC" as used in this statement means NEC Corporation and also includes its majority-owned subsidiaries. (2) "NEC semiconductor products" means any semiconductor product developed or manufactured by or for NEC (as defined above). M8E 00. 4 4 User's Manual U12326EJ4V0UM www.DataSheet4U.com Regional Information Some information contained in this document may vary from country to country. Before using any NEC product in your application, pIease contact the NEC 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. NEC Electronics Inc. (U.S.) Santa Clara, California Tel: 408-588-6000 800-366-9782 Fax: 408-588-6130 800-729-9288 NEC Electronics (Germany) GmbH Benelux Office Eindhoven, The Netherlands Tel: 040-2445845 Fax: 040-2444580 NEC Electronics Hong Kong Ltd. Hong Kong Tel: 2886-9318 Fax: 2886-9022/9044 NEC Electronics Hong Kong Ltd. NEC Electronics (France) S.A. Velizy-Villacoublay, France Tel: 01-3067-5800 Fax: 01-3067-5899 Seoul Branch Seoul, Korea Tel: 02-528-0303 Fax: 02-528-4411 NEC Electronics (Germany) GmbH Duesseldorf, Germany Tel: 0211-65 03 02 Fax: 0211-65 03 490 NEC Electronics (France) S.A. NEC Electronics (UK) Ltd. Milton Keynes, UK Tel: 01908-691-133 Fax: 01908-670-290 Madrid Office Madrid, Spain Tel: 091-504-2787 Fax: 091-504-2860 NEC Electronics Singapore Pte. Ltd. Novena Square, Singapore Tel: 253-8311 Fax: 250-3583 NEC Electronics Taiwan Ltd. NEC Electronics Italiana s.r.l. Milano, Italy Tel: 02-66 75 41 Fax: 02-66 75 42 99 NEC Electronics (Germany) GmbH Scandinavia Office Taeby, Sweden Tel: 08-63 80 820 Fax: 08-63 80 388 Taipei, Taiwan Tel: 02-2719-2377 Fax: 02-2719-5951 NEC do Brasil S.A. Electron Devices Division Guarulhos-SP, Brasil Tel: 11-6462-6810 Fax: 11-6462-6829 J01.2 User's Manual U12326EJ4V0UM 5 www.DataSheet4U.com Major Revisions in This Edition Page Throughout Description Deletion of all information except for information common to the 78K/0 Series (for individual product information, refer to the user’s manual of each product). The mark shows major revised points. 6 User's Manual U12326EJ4V0UM www.DataSheet4U.com INTRODUCTION Target Readers This manual is intended for users who wish to understand the functions of 78K/0 Series products and to design and develop its application systems and programs. Purpose This manual is intended to give users an understanding of the various kinds of instruction functions of 78K/0 Series products. Organization This manual is broadly divided into the following sections. • CPU functions • Instruction set • Explanation of instructions How to Read This Manual It is assumed that readers of this manual have general knowledge in the fields of electrical engineering, logic circuits, and microcontrollers. • To check the details of the functions of an instruction whose mnemonic is known: → Refer to APPENDICES