TI MSP430F471xx超低功耗三相电表解决方案

TI公司的MSP430F471x3, MSP430F471x6和MSP430F471x7是超低功耗混合信号微控制器,集成了三个,六个或七个16位sigma-delta ADC,两个16位定时器,四个通用串行通信接口(USCI),DMA,68个I/O引脚以及带对比控制的LCD驱动器,每路有差分输入对和可编程输入增益, 工作电压1.8 V 到3.6 V,工作模式在1MHz/2.2V是的功耗为350uA,待机模式为1.1uA,关断模式为0.2uA,主要用于电表和手持测量仪表.本文介绍了MSP430F471xx主要特性,方框图以及三相四线星形连接的电表框图和电路图.

The Texas InstrumentsMSP430 family of ultralow-power microcontrollers consists of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with five low-power modes, is optimized to achieve extended battery life in portable measurement applications. The devices feature a powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency.The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 6us.
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