一种适于微功耗智能仪表的A/D接口设计

Design and Implementation of the A/D Converter Interface for Micro Energy Lose Intelligent Instrument

介绍一种基于新一代单片机LPC764内部资源组成的A/D转换接口 ,并给出其实现要点。选择简洁的电路和微功耗器件 ,设置休眠“陷阱”并充分利用MCU的多种中断功能 ,从而使其具有微功耗、低电压。

Introduce a A/D converter based on the inner resource of update MCU LPC764.The key points of Implementation are given in two respects:the selection of a succinct circuit and the elements with micro energy lose in hardware;and the set of sleep trap and the full use of interrupts in software.So the converter features micro energy lose,low voltage,low cost and higher resolution.