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參數(shù)資料
| 型號： | MB89P647PFM |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Replaced by TPS2061 : 1.1A, 4-5.5V Single Hi-Side MOSFET, Fault Report, Act-Low Enable 8-PDIP |
| 中文描述： | 8-BIT, OTPROM, 10 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | PLASTIC, QFP-80 |
| 文件頁數(shù)： | 44/59頁 |
| 文件大?。?/td> | 774K |
| 代理商： | MB89P647PFM |
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44
MB89640 Series
(1) A/D Glossary
Resolution
Analog changes that are identifiable with the A/D converter.
When the number of bits is 8, analog voltage can be divided into 2
8
= 256.
Linearity error (unit: LSB)
The deviation of the straight line connecting the zero transition point (“0000 0000”
“0000 0001”) with the
full-scale transition point (“1111 1111”
“1111 1110”) from actual conversion characteristics
Differential linearity error (unit: LSB)
The deviation of input voltage needed to change the output code by 1 LSB from the theoretical value
Total error (unit: LSB)
The difference between theoretical and actual conversion values
(2) Precautions
Input impedance of the analog input pins
The A/D converter used for the MB89640 series 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.
V
OT
V
NT
V
(N + 1)T
V
FST
Digital output
(1 LSB
×
N + V
OT
)
0000
0000
0000
0001
1111
1111
1110
1111
1 LSB =
AVRH – AVRL
256
Linearity error =
Differential linearity error =
Analog input
Actual conversion value
Theoretical conversion value
Total error =
V
NT
– (1 LSB
×
N + V
OT
)
1 LSB
V
( N + 1 ) T
– V
NT
1 LSB
V
NT
– (1 LSB
×
N + 1 LSB)
– 1
1 LSB
Linearity error
相關PDF資料 |
PDF描述 |
|---|---|
| MB89643PF | Quadruple 2-Input Positive-AND Gates 20-LCCC -55 to 125 |
| MB89643PFM | Quadruple 2-Input Positive-AND Gates 14-CDIP -55 to 125 |
| MB89645PF | Quadruple 2-Input Positive-AND Gates 14-CFP -55 to 125 |
| MB89645PFM | Quadruple 2-Input Positive-AND Gates 20-LCCC -55 to 125 |
| MB89646PF | Quadruple 2-Input Positive-AND Gates 14-CDIP -55 to 125 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MB89P657A | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89P657APF-101 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89P657APF-102 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89P657APF-103 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89P657APF-104 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
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