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參數(shù)資料
| 型號(hào)： | MB90F387SPMT |
| 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, 16 MHz, MICROCONTROLLER, PQFP48 |
| 封裝： | 7 X 7 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, QFP-48 |
| 文件頁數(shù)： | 73/82頁 |
| 文件大?。?/td> | 359K |
| 代理商： | MB90F387SPMT |
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MB90385 Series
73
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. 3.9 k
or lower (4.5 V
≤
AVcc
≤
5.5 V)
(sampling period=2.00
μ
s at 16-MHz machine clock), Approx. 11 k
or lower (4.0 V
≤
AVcc < 4.5 V) (sampling
period=8.0
μ
s at 16-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 output impedance of an external circuit is too high, a sampling period for an analog voltage may be insufficient.
About errors
As [AVR-AVss] become smaller, values of relative errors grow larger.
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 eraset time
T
A
=
+
25
°
C
V
CC
=
5.0 V
1
15
s
Excludes 00H programming
prior to erasure
Chip erase time
4
s
Excludes 00H programming
prior to erasure
Word (16 bit width)
programming time
16
3,600
μ
s
Except for the over head
time of the system
Program/Erase cycle
10,000
cycle
Flash Data Retention
Time
Average
T
A
=
+
85
°
C
20
Year
*
C
R
Analog input circuit model
Note : Use the values in the figure only as a guideline.
MB90F387/S, MB90387/S
4.5 V
≤
AV
CC
≤
5.5 V
4.0 V
≤
AV
CC
<
4.5 V
R : 2.35 k
, C : 36.4 pF
R : 16.4 k
, C : 36.4 pF
Comparator
Analog input
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