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參數(shù)資料
| 型號(hào)： | MB89677AR |
| 廠商： | Fujitsu Limited |
| 英文描述： | Octal Buffers/Drivers With 3-State Outputs 20-CFP -55 to 125 |
| 中文描述： | 8位微控制器專有 |
| 文件頁(yè)數(shù)： | 44/59頁(yè) |
| 文件大?。?/td> | 795K |
| 代理商： | MB89677AR |
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44
MB89670R/670AR Series
5. A/D Converter Electrical Characteristics
(AV
CC
= V
CC
= 3.5 V to 6.0 V, F
C
= 10 MHz, AV
SS
= V
SS
= 0.0 V, T
A
= –40
°
C to +85
°
C)
Rated value
Min.
Typ.
—
—
—
—
6. Notes on Using A/D Converter
The smaller | AVR – AV
SS
|, the greater the error would become relatively.
The output impedance of the external circuit for the analog input must satisfy the following conditions:
Output impedance of the external circuit < Approx. 10 k
If the output impedance of the external circuit is too
high, an analog voltage sampling time might be insufficient (sampling time = 6
μ
s at 10 MHz oscillation).
An analog input equivalent circuit is shown below.
Parameter
Symbol
Pin name
Unit
Remarks
Max.
10
±
2.0
Resolution
Linearity error
Differential linearity
error
Total error
—
—
bit
LSB
AV
CC
=
AVR = V
CC
—
—
±
1.5
LSB
—
—
±
3.0
LSB
Zero transition voltage
V
OT
AN0 to
AN7
AN0 to
AN7
AV
SS
– 1.5 LSB
AV
SS
+ 0.5 LSB
AV
SS
+ 2.5 LSB
mV
Full-scale transition
voltage
Interchannel disparity
A/D mode conversion
time
Sense mode
conversion time
Analog port input
current
V
FST
AVR – 3.5 LSB
AVR – 1.5 LSB
AVR + 0.5 LSB
mV
—
—
—
—
4
LSB
—
—
13.2
μ
s
At 10 MHz
oscillation
At 10 MHz
oscillation
—
—
7.2
μ
s
I
AIN
AN0 to
AN7
AN0 to
AN7
AVR
—
—
10
μ
A
Analog input voltage
—
0
—
AVR
V
Reference voltage
Reference voltage
supply current
0
—
AV
CC
V
I
R
AVR
—
200
μ
A
AVR = 5.0 V
Analog Input Equivalent Circuit
Comparator
C 60 pF
R 3 k
Sample hold circuit
closes for approx. 15 instruction cycles
after starting A/D conversion.
Analog channel selector
R
≤
10 k
is
recommended.
Analog input pin
If R > 10 k
, it is recommended
to connect an external capacitor
of approx. 0.1
μ
F.
Microcontrollers internal circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB89677ARPF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
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| MB89689PF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
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