UPD78P322K 查看數據表（PDF） - NEC => Renesas Technology

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UPD78P322K

16/8-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD78P322

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.

QTOP is a trademark of NEC Corporation.

MS-DOS and Windows are trademarks of Microsoft Corporation.

PC/AT and PC DOS are trademarks of IBM Corporation.

HP9000 series 700 and HP-UX are trademarks of Hewlett-Packard Company.

SPARCstation is a trademark of SPARC International, Inc.

SunOS is a trademark of Sun Microsystems, Inc.

NEWS and NEWS-OS are trademarks of Sony Corporation.

TRON is an abbreviation of The Realtime Operating system Nucleus.

ITRON is an abbreviation of Industrial TRON.

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