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参数资料
| 型号： | MB90F867ESPF |
| 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： | 55/68页 |
| 文件大小： | 1040K |
| 代理商： | MB90F867ESPF |
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MB90860E Series
59
7.
Notes on A/D Converter Unit
Use the device such that the output impedance of the external circuits attached to the analog inputs satisfy the
following conditions.
It is recommended that the 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 division effect between the external
capacitor and the internal on-chip capacitor, it is recommended that the capacitance of the external capacitor
is several thousand times greater than the internal capacitor.
If the output impedance of the external circuit is too high, the sampling period for the analog voltage may be
insufficient.
8.
Flash Memory Program/Erase Characteristics
* : This value is the result 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
Number of program/
erase cycles
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 : The values shown in this figure are reference values.
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