參數(shù)資料
型號(hào): μPD784038Y
廠商: NEC Corp.
英文描述: 8/16 Bit Single Chip Microcontrollers(8/16 位微控制器)
中文描述: 8 / 16位單片機(jī)微控制器(8 / 16位微控制器)
文件頁(yè)數(shù): 38/70頁(yè)
文件大?。?/td> 464K
代理商: ΜPD784038Y
m
PD784035Y,784036Y,784037Y,784038Y
38
7.7 D/A Converter
Two circuits of digital-to-analog (D/A) converters are provided. These D/A converters are of voltage output type
and have a resolution of 8 bits.
The conversion method is of R-2R resistor ladder type. By writing a value to be output to an 8-bit D/A conversion
value setting register (DACSn: n = 0 or 1), an analog value is output to the ANOn (n = 0 or 1) pin. The output voltage
range is determined by the voltage applied across the AV
REF2
and AV
REF3
pins.
Because the output impedance is high, no current can be extracted from the output. If the impedance of the load
is low, insert a buffer amplifier between the load and output pin.
The ANOn pin goes into a high-impedance state while the RESET signal is low. When the RESET signal is
deasserted, DACSn is cleared to 0.
Figure 7-8. Block Diagram of D/A Converter
Remark
n = 0 or 1
AV
REF2
AV
REF3
ANOn
2R
2R
R
2R
R
R
2R
DACSn
DACEn
Internal bus
Selector
相關(guān)PDF資料
PDF描述
μPD784046(A) 16 Bit Single Chip Microcontrollers(16 位單片微控制器)
μPD784046 16 Bit Single Chip Microcontrollers(16位單片微控制器)
μPD784044 16 Bit Single Chip Microcontrollers(16位單片微控制器)
μPD784054 16 Bit Single Chip Microcontrollers(16位單片微控制器)
μPD789011 8 Bit Single Chip Microcontrollers(8位單片微控制器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PD784054GCA2 制造商:NEC 制造商全稱:NEC 功能描述:16-BIT SINGLE-CHIP MICROCONTROLLER
PD784976A 制造商:NEC 制造商全稱:NEC 功能描述:16-Bit Single-Chip Microcontroller
PD7869 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic
PD78F0134 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD78F0134(A) 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers