5
Preliminary User’s Manual U14581EJ3V0UM00
IEBus is a trademark of NEC Corporation.
Windows and WindowsNT 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.
HP9000 series 700 and HP-UX are trademarks of Hewlett-Packard Company.
SPARCstation is a trademark of SPARC International, Inc.
SunOS and Solaris are trademarks of Sun Microsystems, Inc.
Ethernet is a trademark of Xerox Corporation.
NEWS and NEWS-OS are trademarks of Sony Corporation.
OSF/Motif is a trademark of OpenSoftware Foundation, Inc.
TRON is an abbreviation of The Realtime Operating system Nucleus.
ITRON is an abbreviation of Industrial TRON.
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.
Summary of Contents for mPD780851
Page 2: ...2 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 8: ...8 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 12: ...12 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 26: ...26 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 46: ...46 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 74: ...74 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 90: ...90 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 100: ...100 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 136: ...136 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 142: ...142 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 186: ...186 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 222: ...222 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 230: ...230 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 240: ...240 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 262: ...262 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 296: ...296 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 304: ...304 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...
Page 314: ...314 Preliminary User s Manual U14581EJ3V0UM00 MEMO ...