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參數(shù)資料
| 型號： | MB90F823PFM |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Scan Test Devices With Octal Bus Transceivers 24-CDIP -55 to 125 |
| 中文描述： | 16位微控制器專有 |
| 文件頁數(shù)： | 69/98頁 |
| 文件大?。?/td> | 1415K |
| 代理商： | MB90F823PFM |
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MB90820 Series
69
13. D/A Converter
The D/A converter is used to generate an analog output from an 8-bit digital input. By setting the enable bit in
the D/A control register (DACR) to 1, it will enable the corresponding D/A output channel. Hence, setting this bit
to 0 will disable that channel.
If D/A output is disabled, the analog switch inserted to the output of each D/A converter channel in series is
turned off. In the D/A converter, the bit is cleared to 0 and the direct-current path is shut off. The above is also
true in the stop mode.
The output voltage of the D/A converter ranges from 0 V to 255/256 x AV
CC
. To change the output voltage range,
adjust the AV
CC
voltage externally.
The D/A converter output does not have the internal buffer amplifier. The analog switch (= 100
)
is inserted to
the output in series. To apply load to the output externally, estimate a sufficient stabilization time.
Table below lists the theoretical values of output voltage of the D/A converter.
Value written to DA07 to DA00
and DA17 to DA10
Theoretical value of output voltage
00
H
0/256
×
AV
CC
(= 0 V)
01
H
1/256
×
AV
CC
02
H
2/256
×
AV
CC
:
:
FD
H
253/256
×
AV
CC
FE
H
254/256
×
AV
CC
FF
H
255/256
×
AV
CC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MB90F823PFV | 10-Bit Buffers/Drivers With 3-State Outputs 28-LCCC -55 to 125 |
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| MB90822PFM | 16-bit Proprietary Microcontroller |
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