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參數(shù)資料
| 型號： | MB91263BPFV-G-XXX |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, MROM, 33 MHz, RISC MICROCONTROLLER, PQFP100 |
| 封裝： | PLASTIC, LQFP-100 |
| 文件頁數(shù)： | 48/60頁 |
| 文件大小： | 710K |
| 代理商： | MB91263BPFV-G-XXX |
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MB91260B Series
52
About the external impedance of the analog input and its sampling time
A/D converter with sample and hold circuit. If the external impedance is too high to keep sufficient sampling
time, the analog voltage charged to the internal sampling and hold capacitor is insufficient, adversely affecting
A/D conversion precision. So, to satisfy the A/D conversion precision standard, consider the relationship between
the external impedance and minimum sampling time and either adjust the resistor value and operating frequency
or decrease the external impedance so that the sampling time is longer than the minimum value. Also, if the
sampling time cannot be sufficient, connect a capacitor of about 0.1
μF to the analog input pin.
About errors
As |AVRH
AVSS| becomes smaller, values of relative errors grow larger.
C
R
Analog input circuit model
Comparator
During sampling : ON
Analog input
Note : The values are reference values.
RC
MB91263B
2.0 k
Ω (Max) 14.4 pF (Max)
MB91264B
2.0 k
Ω (Max) 14.4 pF (Max)
MB91F264B
2.0 k
Ω (Max) 16.0 pF (Max)
0
2468
10
20
30
40
50
60
70
80
90
100
MB91F264B
MB91263B
MB91264B
0
123
2
4
6
8
10
12
14
16
18
20
MB91F264B
MB91263B
MB91264B
(External impedance
= 0 kΩ to 100 kΩ)
Minimum sampling time (
μs)
E
x
te
rn
al
im
pe
da
n
c
e
(k
Ω
)
(External impedance
= 0 kΩ to 20 kΩ)
Minimum sampling time (
μs)
E
x
te
rn
al
im
pe
da
n
c
e
(k
Ω
)
The relationship between the external impedance and minimum sampling time
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| MB91264BPFV-G-XXX | 32-BIT, MROM, 33 MHz, RISC MICROCONTROLLER, PQFP100 |
| MB91F264BPFV-GE1 | 32-BIT, FLASH, 33 MHz, RISC MICROCONTROLLER, PQFP100 |
| MB91266PFM-G-XXX-E1 | 32-BIT, MROM, 33 MHz, RISC MICROCONTROLLER, PQFP64 |
| MB91266PFM-G-XXX | 32-BIT, MROM, 33 MHz, RISC MICROCONTROLLER, PQFP64 |
| MB91F267PFM-G | 32-BIT, FLASH, 33 MHz, RISC MICROCONTROLLER, PQFP64 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB91265 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontroller |
| MB91265A | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontrollers |
| MB91266 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontroller |
| MB91266A | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontrollers |
| MB91266APMC-GS-XXX | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Proprietary Microcontrollers |
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