Maxim 71M6521高精度高集成电表解决方案

Maxim公司的71M6521DE/DH/FE电表系统级芯片(SoC),集成了MPU核,RTC,闪存和LCD .单转换器技术具有22SigMa-Delta ADC,四个模拟输入,数字温度补偿,精密基准电压,电池电压监视器和32位计算引擎(CE).本文介绍了71M6521DE/DH/FE主要特性,方框图,71M6521演示板和调试板方块图,以及71M6521演示板主要指标,D6521T4A7/8/10演示板电路图,材料清单和PCB布局图.

 The Teridian™ 71M6521DE/DH/FE energy meter ICs are highly integrated systems-on-a-chip (SoCs) with an MPU core, RTC, flash, and LCD driver. The Single Converter Technology® with a 22-bit delta-sigma ADC, four analog inputs, digital temperature compensation, precision voltage reference, battery voltage monitor, and 32-bit computation engine (CE) supports a wide range of residential metering applications with very few low-cost external components. A 32kHz crystal time base for the entire system and internal battery-backup support for RAM and RTC further reduce system cost. The ICs support 2-wire, 3-wire, and 4-wire single-phase and dual-phase residential metering along with tamper-detection mechanisms.

Maximum design flexibility is provided by multiple UARTs, I2C, MICROWIRE®, up to 18 DIO pins, and in-system programmable flash memory, which can be updated with data or application code in operation.
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