參數(shù)資料
型號(hào)： MB89863PFM-XXX
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, MROM, MICROCONTROLLER, PQFP48
封裝： PLASTIC, QFP-48
文件頁(yè)數(shù)： 39/40頁(yè)
文件大?。?/td> 198K
代理商： MB89863PFM-XXX
8
MB89863
(Continued)
s HANDLING DEVICES
1. Preventing Latchup
Latchup may occur on CMOS ICs if voltage higher than VCC or lower than VSS 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 section “s Electrical Characteristics” is applied between VCC and VSS.
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.
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. Power Supply Voltage Fluctuations
Although VCC 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 VCC ripple fluctuations
(P-P value) will be less than 10% of the standard VCC 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.
4. 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.
5. Power Supply and Analog Input for A/D Converter
Take care to prevent the analog power supply (AVCC and AVR) and analog input from exceeding the digital
power supply (VCC) when the analog system power supply is turned on and off.
6. Treatment of Power Supply Pins on Microcontrollers with A/D Converter
Connect to be AVCC = VCC, AVSS = AVR = VSS when the A/D converter is not in use.
Type
Circuit
Remarks
G
N-ch open-drain output
Analog input
H
Hysteresis input
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