參數(shù)資料
型號(hào): μPD784217
廠商: NEC Corp.
英文描述: 8 /16 Bit Single Chip Microcontrollers(8/16位單片微控制器)
中文描述: 8 / 16位單片機(jī)微控制器(8 / 16位單片微控制器)
文件頁數(shù): 39/70頁
文件大小: 271K
代理商: ΜPD784217
μ
PD784217,784218
39
8.6 D/A Converter
A D/A converter converts an input digital signal into an analog voltage. This microcontroller is provided with a
voltage output type D/A converter with a resolution of 8 bits and two channels.
The conversion method is of R-2R resistor ladder type.
D/A conversion is started by setting DACE0 of the D/A converter mode register 0 (DAM0) and DACE1 of the D/
A converter mode register 1 (DAM1).
The D/A converter operates in the following two modes:
Normal mode
The converter outputs an analog voltage immediately after it has completed D/A conversion.
Real-time output mode
The converter outputs an analog voltage in synchronization with an output trigger after it has completed D/A
conversion.
Figure 8-8. Block Diagram of D/A Converter
AV
REF1
AV
SS
DACS0
8
2R
2R
R
R
2R
2R
Selector
ANO0
DACS1
8
2R
2R
R
R
2R
2R
Selector
ANO1
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