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參數(shù)資料
| 型號： | MB90V440G |
| 廠商： | Fujitsu Limited |
| 英文描述： | Photoelectric Sensor; Sensor Input Type:Optical; Sensing Range Max:2m; Sensor Output Type:NPN/PNP DO; Leaded Process Compatible:No; Output Type:DO; Peak Reflow Compatible (260 C):No; Sensor Housing:Rectangular; Supply Voltage:30VDC |
| 中文描述： | 16位微控制器專有 |
| 文件頁數(shù)： | 15/61頁 |
| 文件大?。?/td> | 644K |
| 代理商： | MB90V440G |
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MB90440G Series
15
I
HANDLING DEVICES
1.
Preventing Latch-up
CMOS IC chips may suffer latch-up under the following conditions :
(1) A voltage higher than V
CC
or lower than V
SS
is applied to an input or output pin.
(2) A voltage higher than the rated voltage is applied to between V
CC
and Vss.
(3) The AV
CC
power supply is applied before the V
CC
voltage.
Latch-up may increase the power supply current drastically, causing thermal damage to the device.
Always take sufficient precautions in using semiconductor devices to avoid this possibility.
Also be careful not to let the analog power-supply voltage (AV
CC
, AVRH) exceed the digital power-supply voltage
(V
CC
) when the analog system power-supply is turned on and off.
Handling Unused Input Pins
2.
Do not leave unused input pins open, as doing so may cause misoperation of the device or latch-up leading to
permanent damage. Unused input pins should be pulled up or pulled down through at least 2 k
resistance.
Unused I/O pins may be left open in output state, but if such pins are in input state they should be handled in
the same way as input pins.
Use of the External Clock
3.
To use the external clock, drive only the X0 pin and leave the X1 pin open.
A diagram of how to use an external clock is shown below.
4.
Precautions for when not using a Sub Clock Signal
If the X0A and X1A pins are not connected to an oscillator, apply pull-down treatment to the X0A pin and leave
the X1A pin open.
Power Supply Pins (V
CC
/V
SS
)
5.
In products with multiple V
CC
or V
SS
pins, the pins of a same potential are internally connected in the device to
avoid abnormal operations including latch-up. However, connect the pins external power and ground lines to
lower the electro-magnetic emission level to prevent abnormal operation of strobe signals caused by the rise in
the ground level, and to conform to the total current rating.
Make sure to connect V
CC
and V
SS
pins via lowest impedance to power lines.
It is recommended to provide a bypass capacitor of around 0.1
μ
F between V
CC
and V
SS
pins near the device.
X0
X1
open
MB90440G Series
V
CC
V
SS
V
CC
V
CC
V
CC
V
CC
V
SS
V
SS
V
SS
V
SS
MB90440G
Series
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|---|---|
| MB90V440GCR | Photoelectric Sensor; Sensor Input Type:Optical; Sensing Range Max:8m; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No; Sensor Housing:Rectangular; Contact Current Max:150mA; Contact Rating:150mA |
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