UPD703039 View Datasheet(PDF) - NEC => Renesas Technology
Part Name
Description
MFG CO.
UPD703039 Datasheet PDF : 44 Pages
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µPD703039, 703039Y, 703040, 703040Y, 703041, 703041Y
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 VDD 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.
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.
Related document µPD70F3040, 70F3040Y Data Sheet (U14622E)
Reference document Electrical Characteristics for Microcomputer (IEI-601) Note
Note This document number is that of the Japanese version.
The documents indicated in this publication may include preliminary versions. However, preliminary
versions are not marked as such.
V850 Family and V850/SV1 are trademarks of NEC Corporation.
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Preliminary Data Sheet U13953EJ1V0DS00
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