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參數(shù)資料
| 型號： | MB89490 |
| 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)： | 12/45頁 |
| 文件大?。?/td> | 577K |
| 代理商： | MB89490 |
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12
MB89490 Series
■
HANDLING DEVICES
1. Preventing Latch-up
Latch-up 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 “
■
Electrical Characteristics” is applied between V
CC
and V
SS
.
When latch-up 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
AVR), and analog input from exceeding the digital
power supply (V
CC
) when the analog system power supply is turned on and off.
2. Treatment of Unused Input Pins
Leaving unused input pins open could cause malfunctions. They should be connected to a pull-up or pull-down
resistor.
3. Treatment of Power Supply Pins on Microcontrollers with A/D
Connect to be AV
CC
= V
CC
and AV
SS
= AVR = V
SS
even if the A/D is not in use.
4. Treatment of N.C. Pins
Be sure to leave (internally connected) N.C. pins open.
5. Power Supply Voltage Fluctuations
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 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.
6. Precautions when Using an External Clock
Even when an external clock is used, oscillation stabilization time is required for power-on reset and wake-up
from stop mode.
7. Treatment of Unused dedicated LCD pins
When dedicated LCD pins are not in use, keep them open.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MB89497 | 8-bit Proprietary Microcontroller |
| MB89497PF | 8-bit Proprietary Microcontroller |
| MB89498 | 8-bit Proprietary Microcontroller |
| MB89498PF | 8-bit Proprietary Microcontroller |
| MB89F499 | 8-bit Proprietary Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB89490_03 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller CMOS |
| MB89497 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89497PF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89498 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89498PF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
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