串行输出ADC的时序控制及与MCS51单片机的接口

串行输入ＡＤＣ体积小、功耗低将成为设计者关注的焦点，它的使用可以提高系统性能、降低成本和功耗。由于串行输出ＡＤＣ着眼于ＤＳＰ应用系统，因而将其用于工业控制及仪表领域，必须解决如何与通用单片机接口。为了提高其转换性能必须对其转换时的时序进行精确控制。本文给出了串行输出ＡＤＣ－ＭＡＸ１２１与８９Ｃ５１接口及如何用８９Ｃ５１对其时序进行控制的实例

Serial ADC(MAX121): Sequential Control and Interface with MCS51

For reducing product size and power dissipation, designers can use serial ADC instead of parallel ADC in the realm of industrial systems and intelligent instruments in order to get high performance and accurate timing from serial ADC, the conversion pulse must be synchronized by the ADC operating clock. After conversion the serial data format of the serial ADC must be transformed into the parallel format that is suitable for CPU without SPI/QSPI serial interface. This paper introduces a circuit that may achieve the above functions.