The 71M6511 and 71M6511H are highly integrated SoCs with an MPU core, RTC, flash, and LCD driver. Our Single Converter Technology® with a 22-bit, delta-sigma ADC; three analog inputs; digital temperature compensation; precision voltage reference; and 32-bit computation engine (CE) supports a wide range of single-phase 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. Maximum design flexibility is supported with multiple UARTs, I²C, a power-fail comparator, a 5V LCD charge pump, up to 12 DIO pins, and an in-system programmable flash. The device is offered in a standard (0.5%) accuracy version for multifunction residential/commercial meter applications requiring multiple voltage/current inputs and complex LCD or DIO configurations. A complete array of ICE and development tools, programming libraries, and reference designs enable rapid development and certification of meters that meet most demanding worldwide electricity metering standards. Applications * Residential Meters, 0.5% Accuracy * Wh Accuracy Over 2000:1 Range * < 0.5% (71M6511) * < 0.1% (71M6511H) * Voltage Reference: * < 50ppm/°C (71M6511) * < 10ppm/°C (71M6511H) * Three Sensor Inputs—VDD Referenced * LCD Driver (≤ 128 Pixels) * Up to 12 General-Purpose I/O Pins * 64KB Flash, 7KB RAM * 64-Pin LQFP