參數(shù)資料
型號: MB90F474L
廠商: Fujitsu Limited
英文描述: 16-Bit Proprietary Microcontroller
中文描述: 16位微控制器專有
文件頁數(shù): 109/118頁
文件大小: 555K
代理商: MB90F474L
MB90470 Series
109
Notes :
V
CC
=
V
CC
3
=
V
CC
5
The relative error increases as |AVRH
AV
SS
| is reduced.
Observe the following conditions in applying output impedance on the external circuits of the analog
input.
Output impedance on the external circuit is recommended to be 6 k
or less.
If external capacitance is used, it is recommended that this be several thousand times the level of internal
capacitors in view of the effects of voltage division between the external capacitor and the interior of the
chip.
If the output impedance of the external circuits is too high, the analog voltage sampling time may be
insufficient.
(sampling time
=
3.00
μ
s at machine clock frequency 20 MHz) .
< Reference Data >
Analog Input Circuit
A/D Operating Frequency Restrictions
Supply voltage
3.6 V
AV
CC
3.0 V
3.6 V
AV
CC
2.7 V
2.7 V
>
AV
CC
2.6 V
2.6 V
>
AV
CC
2.5 V
2.5 V
>
AV
CC
2.4 V
2.4 V
>
AV
CC
2.3 V
2.3 V
>
AV
CC
2.2 V
2.2 V
>
AV
CC
2.1 V
2.1 V
>
AV
CC
2.0 V
2.0 V
>
AV
CC
1.9 V
1.9 V
>
AV
CC
1.8 V
A/D conversion time [
μ
s]
4.650
Machine clock frequency
20 MHz
5.813
16 MHz
6.643
14 MHz
7.750
12 MHz
8.455
11 MHz
9.300
10 MHz
11.63
8 MHz
15.50
6 MHz
23.25
4 MHz
46.50
2 MHz
93.00
1 MHz
R
ON1
R
ON2
R
ON3
R
ON4
C
0
C
1
Analog input
Comparator
Sample and hold circuit
Note : Values shown here are intended as guidelines.
Model analog input circuit
R
ON1
: approx. 5 k
R
ON2
: approx. 617
R
ON3
: approx. 617
R
ON4
: approx. 473
C
0
: approx. 35 pF
C
1
: approx. 2 pF
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