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UPD70F3709

Part Number	UPD70F3709
Manufacturer	NEC Electronics
Description	32-Bit Single-Chip Microcontrollers
Published	Jun 8, 2010
Detailed Description	www.DataSheet4U.com Preliminary User’s Manual V850ES/HJ2 32-Bit Single-Chip Microcontrollers Hardware µPD70F3709 µPD7...
Datasheet	UPD70F3709 PDF File

Overview

www.
DataSheet4U.
com Preliminary User’s Manual V850ES/HJ2 32-Bit Single-Chip Microcontrollers Hardware µPD70F3709 µPD70F3710 µPD70F3711 µPD70F3712 Document No.
U17717EJ2V0UD00 (2nd edition) Date Published November 2005 N CP(K) 2005 Printed in Japan www.
DataSheet4U.
com [MEMO] 2 Preliminary User’s Manual U17717EJ2V0UD www.
DataSheet4U.
com NOTES FOR CMOS DEVICES 1 VOLTAGE APPLICATION WAVEFORM AT INPUT PIN Waveform distortion due to input noise or a reflected wave may cause malfunction.
If the input of the CMOS device stays in the area between VIL (MAX) and VIH (MIN) due to noise, etc.
, the device may malfunction.
Take care to prevent chattering noise from entering the device when the input level is fixed, and also in the transition period when the input level passes through the area between VIL (MAX) and VIH (MIN).
2 HANDLING OF UNUSED INPUT PINS Unconnected CMOS device inputs can be cause of malfunction.
If an input pin is unconnected, it is possible that an internal input level may be generated due to noise, etc.
, causing malfunction.
CMOS devices behave differently than Bipolar or NMOS devices.
Input levels of CMOS devices must be fixed high or low by using pull-up or pull-down circuitry.
Each unused pin should be connected to VDD or GND via a resistor if there is a possibility that it will be an output pin.
All handling related to unused pins must be judged separately for each device and according to related specifications governing the device.
3 PRECAUTION AGAINST ESD A 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 when it has occurred.
Environmental control must be adequate.
When it is dry, a humidifier should be used.
It is recommended to avoid using insulators that easily build up static electricity.
Semiconductor devices must be stored and transported in an...

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