Maxim Integrated 71M6521FE
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.
| Part No. |
71M6521FE |
| Datasheet |
71M6521FE
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| Manufacturer |
 Maxim Integrated |
| Description |
Energy Meter |
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GENERAL DESCRIPTION
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 singlephase 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. A complete array of ICE and development tools, programming libraries, and reference designs enable rapid development and certification of TOU, AMR, and prepay meters that comply with worldwide electricity metering standards. A NEUT B CT/SHUNT LOAD LOAD POWER SUPPLY AMR RX/DIO1 IR TX/DIO2 POWER FAULT 32 kHz CONVERTER IA VA IB VB VOLTAGE REF VREF VBIAS SERIAL PORTS TX RX SENSE DRIVE/MOD COMPARATOR V1 OSC/PLL XIN XOUT V3.3A V3.3 SYS TERIDIAN 71M6521 GNDA GNDD PWR MODE CONTROL WAKE-UP REGULATOR VBAT V2.5 TEMP SENSOR DIO...
