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參數(shù)資料
| 型號(hào)： | MB89F538-201P |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER, PDIP64 |
| 封裝： | 17 X 58 MM, 5.65 MM HEIGHT, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-64 |
| 文件頁(yè)數(shù)： | 49/72頁(yè) |
| 文件大小： | 2290K |
| 代理商： | MB89F538-201P |
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MB89530A Series
DS07-12547-7E
53
(5) Precautionary Information
Input Impedance of Analog Input Pins
The A/D converter of MB89530A has a sample & hold circuit as shown below, which uses a sample-and-hold
capacitor to obtain the voltage at the analog input pin for 8 instruction cycles following the start of A/D conversion.
For this reason if the external circuits providing the analog input signal have high output impedance, the analog
input voltage may not stabilize within the analog input sampling time. It is therefore recommended that the output
impedance of external circuits be reduced to 10 k
or less.
About error
The smaller the absolute value |AVR - AVss| is, the greater the relative error becomes.
Analog Input Equivalent Circuit
C
R
Comparator
If analog input impedance is
10 k
or more, the use of a
capacitor of approximately
0.1
F is recommended.
Analog input pin
Sample-and-hold circuit
Closes 8 instruction cycles
after the start of A/D conversion
Analog channel selector
MB89535A/537A/537AC/538A/538AC
C := 45 pF
R := 2.2 k
MB89F538
C := 30 pF
R := 3.2 k
MB89F538L
C := 49 pF
R := 7.1 k
MB89P538, MB89P530
C := 64 pF
R := 3.0 k
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB89F538-201PF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Original Microcontroller CMOS, F-2MC-8L MB89530A Series |
| MB89F538-201PFM | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Original Microcontroller CMOS, F-2MC-8L MB89530A Series |
| MB89F538-201P-SH | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Original Microcontroller CMOS, F-2MC-8L MB89530A Series |
| MB89F538-201PV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Original Microcontroller |
| MB89F538L | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Original Microcontroller |
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