參數(shù)資料
型號(hào): MB90V580B
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(yè)數(shù): 98/124頁(yè)
文件大?。?/td> 2638K
代理商: MB90V580B
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MB90580B Series
98
7.
Notes on Using A/D Converter
Select the output impedance value for the external circuit of analog input according to the following conditions.
Output impedance values of the external circuit of 7 k
or lower are recommended.
When capacitors are connected to external pins, the capacitance of several thousand times the internal capacitor
value is recommended to minimized the effect of voltage distribution between the external capacitor and internal
capacitor.
When the output impedance of the external circuit is too high, the sampling period for analog voltages may not
be sufficient (sampling period = 4.00
μ
s @machine clock of 16 MHz)
Error
The smaller the | AVRH - AVRL |, the greater the error would become relatively.
8.
D/A Converter Electrical Characteristics
(V
CC
=
AV
CC
=
5.0 V
±
10%, V
SS
=
AV
SS
=
DV
SS
=
0.0 V, T
A
=
40
°
C to
+
85
°
C)
Value
*1 : Load capacitance: 20 pF
*2 : In sleep mode
Parameter
Symbol Pin name
Unit
Remarks
Min.
V
SS
+
3.0
Typ.
Max.
±
0.9
±
1.2
±
1.5
20
Resolution
I
DVR
8
10
120
20
bit
Differential linearity error
LSB
Absolute accuracy
%
Linearity error
LSB
μ
s
V
μ
A
μ
A
k
Conversion time
*1
Analog reference voltage
DVRH
AV
CC
Reference voltage supply
current
DVRH
300
I
DVRS
10
*2
Analog output impedance
Equipment of analog input circuit model
C
0
C
1
Analog input
Comparator
Note: Listed values must be considered as standards.
MB90587, MB90V580B
MB90F583B
MB90583B
R
1.5 k
, C
30 pF
R
3.0 k
, C
65 pF
R
2.2 k
, C
45 pF
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