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參數(shù)資料
| 型號： | MB89470 |
| 廠商： | Fujitsu Limited |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-bit Proprietary Microcontroller |
| 中文描述： | 8位微控制器專有 |
| 文件頁數(shù)： | 13/48頁 |
| 文件大小： | 318K |
| 代理商： | MB89470 |
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MB89470 Series
13
I
HANDLING DEVICES
1.
Preventing Latchup
Latchup may occur on CMOS ICs if voltage higher than V
CC
or lower than V
SS
is applied to input and output pins
other than medium- to high-voltage pins or if higher than the voltage which shows on “1. Absolute Maximum
Ratings” in “
I
ELECTRICAL CHARACTERISTICS” is applied between V
CC
and V
SS
.
When latchup occurs, power supply current increases rapidly and might thermally damage elements. When
using, take great care not to exceed the absolute maximum ratings.
Also, take care to prevent the analog power supply (AV
CC
) and analog input from exceeding the digital power
supply (V
CC
) when the analog system power supply is turned on and off.
Treatment of Unused Input Pins
2.
Leaving unused input pins open could cause malfunctions. They should be connected to a pull-up or pull-down
resistor.
Treatment of Power Supply Pins on Microcontrollers with A/D Converter
Connect to be AV
CC
=
V
CC
and AV
SS
=
V
SS
even if the A/D converter is not in use.
Treatment of N.C. Pins
3.
4.
Be sure to leave (internally connected) N.C. pins open.
Power Supply Voltage Fluctuations
5.
Although V
CC
power supply voltage is assured to operate within the rated range, a rapid fluctuation of the voltage
could cause malfunctions, even if it occurs within the rated range. Stabilizing voltage supplied to the IC is therefore
important. As stabilization guidelines, it is recommended to control power so that V
CC
ripple fluctuations (P-P
value) will be less than 10
%
of the standard V
CC
value at the commercial frequency (50 Hz to 60 Hz) and the
transient fluctuation rate will be less than 0.1 V/ms at the time of a momentary fluctuation such as when power
is switched.
Precautions when Using an External Clock
6.
Even when an external clock is used, oscillation stabilization time is required for power-on reset (optional) and
wake-up from stop mode.
Note to noise in the External Reset Pin (RST)
7.
If the reset pulse applied to the external reset pin (RST) does not meet the specifications, it may cause malfunc-
tions. Use causion so that the reset pulse less than the specifications will not be fed to the external reset pin (RST).
相關PDF資料 |
PDF描述 |
|---|---|
| MB89475 | 8-bit Proprietary Microcontroller |
| MB89475PFM | 8-bit Proprietary Microcontroller |
| MB89475PFV | 8-bit Proprietary Microcontroller |
| MB89475P-SH | 8-bit Proprietary Microcontroller |
| MB89480 | 8-bit Proprietary Microcontroller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MB89475 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89475PFM | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89475PFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89475P-SH | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89480 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
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