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通过SPI连接DAC714和微控制器
消耗积分:10 |
格式:rar |
大小:58 |
2009-06-12
48674
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The DAC714 is a complete, easy-to-use 16-bit digital to
analog converter featuring a voltage output with and a
precision reference together with a serial interface.
The suggested timing as shown in the timing diagrams of the
DAC714 data sheet makes the part difficult to use with an
SPI interface. The part seems to need 16 clock cycles to load
the serial shift register and an additional clock to update the
DAC register. Also, to update the DAC register, A1 has to be
pulled low for this clock cycle. This application note shows
an easy way to use the DAC714 on a SPI interface without
any glue logic.
analog converter featuring a voltage output with and a
precision reference together with a serial interface.
The suggested timing as shown in the timing diagrams of the
DAC714 data sheet makes the part difficult to use with an
SPI interface. The part seems to need 16 clock cycles to load
the serial shift register and an additional clock to update the
DAC register. Also, to update the DAC register, A1 has to be
pulled low for this clock cycle. This application note shows
an easy way to use the DAC714 on a SPI interface without
any glue logic.
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