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參數(shù)資料
| 型號(hào)： | MB90V520A |
| 廠商： | Fujitsu Limited |
| 英文描述： | 16-bit Proprietary Microcontroller |
| 中文描述： | 16位微控制器專(zhuān)有 |
| 文件頁(yè)數(shù)： | 63/99頁(yè) |
| 文件大小： | 978K |
| 代理商： | MB90V520A |
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MB90520A/520B Series
63
14. 8-bit D/A Converter
The 8-bit D/A converter performs R-2R D/A conversion with 8-bit resolution.
Two D/A converter channels with independent analog outputs are provided.
D
/
A converter functions
D
/
A converter theoretical output voltage
D/A Data Register Setting
Note : DV
CC
voltage : D/A converter reference voltage. This must not exceed V
CC
.
Also, always ensure that DV
SS
is equipotential to V
SS
.
Function
D/A conversion time
The settling time is 12.5
μ
s. This is independent of the machine clock.
R-2R conversion
8-bit
Two output pins are provided. Both pins can be used simultaneously.
None
Set the digital value in the D/A data register (DADR) , then enable D/A output in the
D/A control register (DACR) to start analog output from the D/A output pin.
Not supported by the extended intelligent I/O service (EI
2
OS) .
Conversion method
Resolution
Analog output pins
Interrupts
D/A conversion trigger
EI
2
OS support
Theoretical Output Voltage Value
0
/
256
×
DV
CC
voltage (
=
0 V)
1
/
256
×
DV
CC
voltage
254
/
256
×
DV
CC
voltage
255
/
256
×
DV
CC
voltage
00
H
00
H
FE
H
FF
H
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