71M6521BE

www.DataSheet4U.com 71M6521BE Energy Meter IC DATA SHEET JANUARY 2008 GENERAL DESCRIPTION The TERIDIAN 71M6521BE is a highly integrated SOC with an MPU core, FLASH and LCD driver. TERIDIAN’s patented Single Converter Technology™ with a 22-bit delta-sigma ADC, four analog inputs, digital temperature compensation, precision voltage reference, battery voltage monitor, and 32bit 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 further reduces system cost. The IC supports 2-wire single-phase residential metering along with tamperdetection mechanisms. Maximum design flexibility is provided by multiple UARTs, I2C, μWire, up to 14 DIO pins and in-system programmable FLASH memory, which can be updated with data or application code in operation. A complete array of ICE and development tools, programming libraries and reference designs enable rapid development and certification of AMR and Prepay meters that comply with worldwide electricity metering standards. A NEUT B LOAD CT/SHUNT LOAD POWER SUPPLY FEATURES < 0.4% Wh accuracy over 2000:1 current range and over temperature Exceeds IEC62053 / ANSI C12.20 standards Voltage reference < 40ppm/°C Four sensor inputs—VDD referenced Low jitter Wh test output (10kHz maximum) Pulse count for Wh pulse output Tamper detection: Neutral current with CT or shunt Line frequency count for time keeping Digita...