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User’s Manual
µPD784216, 784216Y Subseries
8-/16-Bit Single-Chip Microcontrollers Hardware
µPD784214 µPD784215 µPD784216 µPD78F4216
µPD784214Y µPD784215Y µPD784216Y µPD78F4216Y
Document No. U12015EJ3V0UM00 (3rd edition) Date Published July 1999 N CP(K) 1996, 1999
Printed in Japan
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User’s Manual U12015EJ3V0UM00
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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. Windows and Windows NT are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. PC/AT is a trademark of International Business Machines Corporation in the USA. SPARCstation is a trademark of SPARC International, Inc. in the USA. Solaris and SunOS are trademarks of Sun Microsystems Inc. in the USA. HP9000 Series 700 and HP-UX are trademarks of Hewlett-Packard Co. in the USA. NEWS and NEWS-OS are trademarks of Sony Corporation. Ethernet is a trademark of Xerox Corporation in the USA. OSF/Motif is a trademark of the Open Software Foundation, Inc. TRON is an acronym of The Realtime Operating system Nucleus. ITRON is an abbreviation of Industrial TRON.
User’s Manual U12015EJ3V0UM00
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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.
Licence not needed
: µPD78F4216, 78F4216Y
The customer must judge the need for licence : µPD784214, 784215, 784216, 784214Y, 784215Y, 784216Y Purchase of NEC I2C components conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips.
• The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. • Not all devices/types available in every country. Please check with local NEC representative for availability and additional information. • No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this document. • NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corp.