71M6511/71M6511H
Single-Phase Energy Meter IC
GENERAL DESCRIPTION
The 71M6511 is a highly integrated SOC with an MPU co...
71M6511/71M6511H
Single-Phase Energy Meter IC
GENERAL DESCRIPTION
The 71M6511 is a highly integrated SOC with an MPU core, RTC, flash, and LCD driver. Our Single Converter Technology® with a 22-bit deltasigma 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 insystem programmable flash. The device is offered in high (0.1%) and standard (0.5%) accuracy versions 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.
CT/SHUNT
LIVE NEUT
LOAD
POWER SUPPLY
V or I
AMR IR
POWER FAULT 32 kHz
CONVERTER IA VA
IB
VOLTAGE REF VREF VBIAS
SERIAL PORTS TX RX
SENSE RX DRIVE TX COMPARATOR V1
OSC/PLL XIN XOUT
V3.3A V3.3D GNDA GNDD
5V BOOST
TERIDIAN
VDRV
71M6511 REGULATOR
VBAT V2.5
TEMP SENSOR
RAM
FLASH
LCD DRIVER DIO, PULSE
VLCD
COM0..3
SEG0..19 SEG 24.....