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参数资料
| 型号： | MB90F345CESPF |
| 厂商： | FUJITSU COMPONENT LTD |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件页数： | 69/85页 |
| 文件大小： | 1173K |
| 代理商： | MB90F345CESPF |
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MB90340E Series
71
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 capacitive voltage dividing effect between the external
capacitor and the internal on-chip capacitor, it is recommended that the capacitance of the external capacitor
be several thousand times greater than the capacitance of the internal capacitor.
If the output impedance of the external circuit is too high, a sampling period for an analog voltage may be
insufficient.
8.
Flash Memory Program/Erase Characteristics
* : This value was converted from the results of evaluating the reliability of the technology (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
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
3600
s
Except for the over head
time of the system
Program/Erase cycle
10000
cycle
Flash Data Retention
Time
Average
TA
= +85 °C
20
year
*
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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