本文介绍的数据采集系统应用低功耗、14 位逐次逼近以及兼容于I2C 串行接口的模/数转换器MAX1069,可方便的与微控制器及其外围设备进行连接。通过自行设计的数据采集系统,本文主要介绍了MAX1069 芯片的功能、时序,并通过I2C 软件模拟的方法,实现了MAX1069 与MCS-51 系列单片机间的数据采集。关键词:模/数转换器;MAX1069;I2C 总线;单片机;数据采集Abstract:The paper is proposed a system of data acqusition in which, a low-power, 14-bit successive approximation analog-to-digital converter (ADC) of MAX1069 is applyed. And with an I2C-compatible 2-wire serial interface,so MAX1069 is convenient to link with MCU. According to the data acqusiting system designed, the performance and clock cycles of MAX1069 is mainly introduced in this paper. In order to implement data acqusiting between MAX1069 and MCU of MCS-51 family, it is necessary to use software to simulate the operation of I2C.Keywords:ADC;MAX1069;I2C Bus;MCU;Data Acqusition
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