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參數(shù)資料
| 型號： | MB90V440G |
| 廠商： | Fujitsu Limited |
| 英文描述： | Photoelectric Sensor; Sensor Input Type:Optical; Sensing Range Max:2m; Sensor Output Type:NPN/PNP DO; Leaded Process Compatible:No; Output Type:DO; Peak Reflow Compatible (260 C):No; Sensor Housing:Rectangular; Supply Voltage:30VDC |
| 中文描述： | 16位微控制器專有 |
| 文件頁數(shù)： | 56/61頁 |
| 文件大小： | 644K |
| 代理商： | MB90V440G |
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MB90440G Series
56
Notes on Using A
/
D Converter
Select the output impedance value for the external circuit of analog input according to the following conditions :
Output impedance values of the external circuit of about 5 k
or lower are recommended.
If external capacitors are used, a capacitance of several thousand times the internal capacitor value is recom-
mended in order to minimize the effect of voltage distribution between the external and internal capacitor.
Note: If the output impedance of the external circuit is too high, the sampling time for analog voltages may not be
sufficient (sampling period
=
2.00
μ
s @ machine clock of 16 MHz) . The output impedance of the external
circuit can be set to approx. 15k
or lower , when the sampling period is set to 4.00
μ
s.
Analog Input Circuit Model
The smaller the absolute value of | AVRH
AVRL | is, the greater the relative error is.
6.
Flash Memory Program/Erase Characteristics
Parameter
Condition
Value
Unit
Remarks
Min
Typ
Max
Sector erase time
T
A
=
+
25
°
C
V
CC
=
5.0 V
1
15
s
Excludes 00H programming prior
erasure
Chip erase time
5
s
Excludes 00H programming prior
erasure
Word (16 bit width)
programming time
16
3,600
μ
s
Excludes system-level overhead
Erase/Program cycle
10,000
cycle
C
Comparator
Analog input
R
MB90F443G, MB90V440GR : 3.2 k
,
C : 30 pF
R : 2.6 k
,
C : 28 pF
MB90443G
(Under development)
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