參數(shù)資料
型號(hào)： MB89165A
廠商： Fujitsu Limited
英文描述： 8-Bit Proprietary Microcontroller(8位專用微控制器)
中文描述： 8位微控制器專利（8位專用微控制器）
文件頁(yè)數(shù)： 42/59頁(yè)
文件大小： 508K
代理商： MB89165A
42
MB89160/160A Series
(2) Precautions
Input impedance of analog input pins
The A/D converter contains a sample hold circuit as illustrated below to fetch analog input voltage into the
sample hold capacitor for eight instruction cycles after activating 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 about
0.1
μ
F for the analog input pin.
Error
The smaller the |AVR – AV
SS
|,
the greater the error would become relatively.
1111
1111
0000
0000
0000
1111
1110
0010
0001
0000
V
OT
Analog input
Linearity error =
Actual conversion value
1 LSB =
256
Digital output
AVR
Theoretical conversion value
(1 LSB
×
N + V
OT
)
V
NT
V
FST
V
(N + 1)T
– 1
1 LSB
V
NT
– (1 LSB
×
N + V
OT
)
Defferential linearity error =
1 LSB
V
(N+1)T
– V
NT
Total error =
1 LSB
V
NT
– (1 LSB
×
N + 1 LSB)
Linearity error
Analog input pin
Sampl..
C = 33 pF
If the analog input
impedance is higher
than 10 k
, it is
recommended to
connect an external
capacitor of approx.
0.1
μ
F.
Comparator
R..
Close for 8 instruction cycles after
activating A/D conversion.
Analog channel selector
Analog Input Equivalent Circuit
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參數(shù)描述
MB89165A-PF 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89165A-PFS 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89165A-PFV 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89165-PF 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89165-PFS 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
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