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參數(shù)資料
| 型號： | MB90F394HPMT |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-bit Proprietary Microcontroller CMOS |
| 中文描述： | 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP120 |
| 封裝： | 16 X 16 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-120 |
| 文件頁數(shù)： | 57/61頁 |
| 文件大?。?/td> | 317K |
| 代理商： | MB90F394HPMT |
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MB90390 Series
57
7.
Notes on A/D Converter Section
Use the device with external circuits of the following output impedance for analog inputs :
Recommended output impedance of external circuits are : Approx. 3.1 k
or lower (4.5 V
≤
AV
CC
≤
5.5 V)
(sampling period
=
1.60
μ
s at 20 MHz machine clock) .
If an external capacitor is used, in consideration of the effect by tap capacitance caused by external capacitors
and on-chip capacitors, capacitance of the external one is recommended to be several thousand times as high
as internal capacitor.
If toutput impedance of an external circuit is too high, a sampling period for an analog voltage may be insufficient.
Analog input circuit model
8.
Flash Memory Program/Erase Characteristics
* : This value comes from the technology qualification (using Arrhenius equation to translate high temperature
measurements into normalized value at
+
85
°
C) .
Parameter
Conditions
Value
Unit
Remarks
MIn
Typ
Max
Sector erase time
T
A
=
+
25
°
C
V
CC
=
5.0 V
1
15
s
Excludes programming
prior to erasure
Chip erase time
9
s
Excludes programming
prior to erasure
Word (16 bit width)
programming time
16
3,600
μ
s
Except for the over head
time of the system
Programs/Erase cycle
10,000
cycle
Flash Data Retention
Time
Average
T
A
=
+
85
°
C
20
Year
*
C
Comparator
Analog input
R
R : 2.35 k
, C : 36.4 pF
Note : Use the values in the figure only as a guideline.
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