參數(shù)資料
型號(hào)： MB89130A
廠(chǎng)商： Fujitsu Limited
元件分類(lèi)： 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(zhuān)有
文件頁(yè)數(shù)： 44/59頁(yè)
文件大小： 738K
代理商： MB89130A
MB89130/130A Series
44
7.
Notes on Using A/D Converter
lnput impedance of the analog input pins
The A/D converter used for the MB89130/130A series contains a sample hold circuit as illustrated below to fetch
analog input voltage into the sample hold capacitor for eight instruction cycles after starting A/D conversion.
For this reason, if the output impedance of the external circuit for the analog input is high, analog input voltage
might not stabilize within the analog input sampling period. Therefore, it is recommended to keep the output
impedance of the external circuit low (below 10 k
) .
Note that if the impedance cannot be kept low, it is recommended to connect an external capacitor of approx.
0.1
μ
F for the analog input pin.
Error
The smaller the | AVR
AV
SS
|, the greater the error would become relatively.
Sample hold circuit
C .
Comparator
Analog input pin
R .
Close for 8 instruction cycles after starting
A/D conversion.
Analog channel selector
If the analog input
impedance is higher
than 10 k
,
it is
recommended to
connect an external
capacitor of approx.
0.1
μ
F.
Analog Input Equivalent Circuit
相關(guān)PDF資料
PDF描述
MB89131 8-bit Proprietary Microcontroller
MB89131PFM 8-bit Proprietary Microcontroller
MB89133 8-bit Proprietary Microcontroller
MB89133A 8-bit Proprietary Microcontroller
MB89133AP 8-bit Proprietary Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB89131 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89131PFM 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89133 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89133A 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89133AP 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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