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參數(shù)資料
| 型號(hào)： | MB90F346SPF |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | PLASTIC, QFP-100 |
| 文件頁(yè)數(shù)： | 68/76頁(yè) |
| 文件大?。?/td> | 1033K |
| 代理商： | MB90F346SPF |
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MB90340 Series
70
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. 1.5 k
or lower (4.0 V ≤ AVCC ≤ 5.5 V,
sampling period
≤ 0.5 s)
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 output impedance of an external circuit is too high, a sampling period for an analog voltage may be insufficient.
8.
Flash Memory Program/Erase Characteristics
Parameter
Conditions
Value
Unit
Remarks
Min
Typ
Max
Sector erase time
TA
= +25 °C
VCC
= 5.0 V
115
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
s
Except for the over head
time of the system
Programs/Erase cycle
10,000
cycle
C
Comparator
Analog input
R
4.5 V
≤ AVCC ≤ 5.5 V : R := 2.52 k, C := 10.7 pF
4.0 V
≤ AVCC ≤ 4.5 V : R := 13.6 k, C := 10.7 pF
Analog input circuit model
Note : Use the values in the figure only as a guideline.
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