參數(shù)資料
型號(hào)： MB89943PF
廠商： FUJITSU LTD
元件分類(lèi)： 微控制器/微處理器
英文描述： Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CDIP -55 to 125
中文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP48
封裝： PLASTIC, QFP-48
文件頁(yè)數(shù)： 13/40頁(yè)
文件大?。?/td> 562K
代理商： MB89943PF
13
MB89940 Series
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- and high-voltage pins or if higher than the voltage which shows on “1. Absolute Maximum
Ratings” in section “
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 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.
The VINT pin of MB89PV940 and MB89P945 is the only exception.
3. Treatment of Power Supply Pins on Microcontrollers with A/D and D/A Converters
Connect to be AV
CC
= DAVC = V
CC
and AV
SS
= AVR = V
SS
even if the A/D and D/A converters are 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.
相關(guān)PDF資料
PDF描述
MB8994x Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CFP -55 to 125
MB89PV940CF 8-bit Proprietary Microcontroller
MB89P945PF 8-bit Proprietary Microcontroller
MB89951 Octal Buffers/Drivers With 3-State Outputs 20-LCCC -55 to 125
MB89951PFM Octal Buffers/Drivers With 3-State Outputs 20-CDIP -55 to 125
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB89945 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontrolle
MB89945PF 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontrolle
MB8994X 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89951 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89951PFM 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
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