【摘要】 本文在分析三线制串行总线器件MAX531(12位DAC)时序的基础上,给出8031单片机与这类总线器件的接口方法以及模拟这类接口的相应程序框图;作为一个实例,介绍了应用MAX531实现智能熔融金属测温仪模拟量输出(0～10mA或4～20mA)和自校验功能的原理、方法以及原理电路,给出了MAX531输入数字量的计算公式。更多还原

【Abstract】 A method for interfacing single chip computer 8031and 3-line serial bus devices is presented in this paper based on analysis of the timing sequences of a typical device MAX 531 (12-bit DAC). As an example, an intelligent temperature instrument for molten metal measurement composed of MAX 531 is described. The input digital quantity formula is also given.更多还原