摘 要 LVI模块作为HC08单片机的重要组成部分,保障了单片机的可靠运行,在工业应用中发挥着重要作用。本文阐述了HC08型单片机LVI模块组成结构, 作用原理及其基本应用。特别介绍了LVI的常用指令, 寄存器设置。分析了LVI模块的一般测试过程,并专门针对J750测试机分析了它的测试参数。关键词 HC08; LVI; 单片机; 电压抑制; 失效学科分类 TN792HC08 Microcontroller LVI Module Function Description and Its Test ProcedureAbstract: LVI module is an important part of HC08 microcontroller, it guarantees microcontroller’s reliability, and plays an important role in industry field. This article described HC08 microcontroller LVI module’s components, working theory and basic practical use. Especially introduced LVI common instructions, register configuration. Had analyzed LVI module’s general test procedure, and analyzed its test elements according to J750 tester.Keywords: HC08; LVI; Microcontroller; Voltage restrain; Failure1. 引言LVI (Low Voltage Inhibit) 模块,是各种微控制器中必不可少的组成部分,如图1 所示。它使得微控制器在供电电压过低的情况下,产生复位信号,从而确保在电压过低时微控制器不会产生错误信号或指令。LVI模块通过对微控制器的电源电压进行实时监控,同时利用编程设置低电压复位的临界值,从而实现防止微控制器的误操作。总之,LVI模块的应用,大大增加了微控制器在工业应用中的稳定性。摘自无忧无虑论文网