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| 型号： | 780024 |
| 厂商： | NEC Corp. |
| 英文描述： | Common to 78K/0 Series |
| 中文描述： | 共同的78K / 0系列 |
| 文件页数： | 3/129页 |
| 文件大小： | 644K |
| 代理商： | 780024 |
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3
User's Manual U12326EJ4V0UM
Caution:
Purchase of NEC I
2
C components conveys a license under the Philips I
2
C Patent Rights to use these
components in an I
2
C system, provided that the system conforms to the I
2
C Standard Specification as
defined by Philips.
IEBus is a trademark of NEC Corporation.
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.
相关PDF资料 |
PDF描述 |
|---|---|
| 780024Y | Common to 78K/0 Series |
| 780034 | TL Series Toggle Switch, 1 pole, 3 position, Screw terminal, Locking Lever, Military Part Number MS24658-27N |
| 780034Y | Common to 78K/0 Series |
| 78k | Common to 78K/0 Series |
| 7805ALP | 16-Bit Latchup Protected ADC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 78002415 | 制造商:Laird Technologies Inc 功能描述:SLMT 2F ZNC USFT |
| 78002417 | 制造商:Laird Technologies Inc 功能描述:SLMT 2F SNB USFT |
| 78002419 | 制造商:Laird Technologies Inc 功能描述:SLMT 2F NIB USFT |
| 78002-49-59 | 制造商:VERNITRON - USE MOL 功能描述:Cross Referenced to MOLEX - Part: MOL38789-0016 |
| 780024Y | 制造商:NEC 制造商全称:NEC 功能描述:Common to 78K/0 Series |
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