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71M6541F Datasheet(PDF) 1 Page - Maxim Integrated Products |
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71M6541F Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 166 page  19-5376; Rev 5; 1/15 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. 71M6541D/F/G and 71M6542F/G Energy Meter ICs GENERAL DESCRIPTION The 71M6541D/71M6541F/71M6541G/71M6542F/71M6542G (71M654x) are 4th-generation single-phase metering SoCs with a 5MHz 8051- compatible MPU core, low-power RTC with digital temperature compensation, flash memory, and LCD driver. Our Single Converter Technology® with a 22-bit delta-sigma ADC, three or four analog inputs, digital temperature compensation, precision voltage reference, and a 32-bit computation engine (CE) supports a wide range of metering applications with very few external components. The 71M6541/2 devices support optional interfaces to the 71M6x01 series of isolated sensors, which offer BOM cost reduction, immunity to magnetic tamper, and enhanced reliability. Other features include an SPI interface, advanced power management, ultra-low-power operation in active and battery modes, 3/5KB shared RAM and 32/64/128KB of flash memory that can be programmed in the field with code and/or data during meter operation and the ability to drive up to six LCD segments per SEG driver pin. High processing and sampling rates combined with differential inputs offer a powerful metering platform for residential meters. A complete array of code development tools, demonstration code, and reference designs enable rapid development and certification of meters that meet all ANSI and IEC electricity metering standards worldwide. The 71M654x family operates over the industrial temperature range and comes in 64-pin (71M6541D/F/G) and 100-pin (71M6542F/G) lead(Pb)-free LQFP packages. MPU RTC TIMERS IAP VA IBP XIN XOUT RX TX TX RX COM0...5 V3P3A V3P3SYS VBAT VBAT_RTC SEG GNDA GNDD SEG/DIO DIO ICE LINE NEUTRAL LOAD 8888.8888 PULSES, DIO IR AMR POWER FAULT COMPARATOR MODUL- ATOR SERIAL PORTS OSCILLATOR/ PLL MUX and ADC LCD DRIVER DIO, PULSES COMPUTE ENGINE FLASH MEMORY RAM 32 kHz REGULATOR Shunt POWER SUPPLY 71M6541D/F/G TEMPERATURE SENSOR VREF BATTERY PWR MODE CONTROL WAKE-UP NEUTRAL I 2C or µWire EEPROM IAN IBN RTC BATTERY V3P3D BATTERY MONITOR SPI INTERFACE HOST LCD DISPLAY Pulse Trans- former 71M6xx1 Shunt LINE Note: This system is referenced to LINE 11/5/2010 BENEFITS AND FEATURES • SoC Integration and Unique Isolation Technique Reduces BOM Cost Without Sacrificing Performance • 0.1% Typical Accuracy Over 2000:1 Current Range • Exceeds IEC 62053/ANSI C12.20 Standards • Four-Quadrant Metering • 46-64Hz Line Frequency Range with the Same Calibration • Phase Compensation (±10°) • Independent 32-Bit Compute Engine • 32KB Flash, 3KB RAM (71M6541D) • 64KB Flash, 5KB RAM (71M6541F/42F) • 128KB Flash, 5KB RAM (71M6541G/42G) • Built-In Flash Security • SPI interface for Flash Program Capability • Up to Four Pulse Outputs with Pulse Count • 8-Bit MPU (80515), Up to 5 MIPS • Full-Speed MPU Clock in Brownout Mode • LCD Driver Allows Up to 6 Commons/Up to 56 Pins • 5V LCD Driver with DAC • Up to 51 Multifunction DIO Pins • Hardware Watchdog Timer (WDT) • Two UARTs for IR and AMR • IR LED Driver with Modulation • Innovative Isolation Technology (Requires Companion 71M6xxx Sensor, also from Maxim Integrated) Eliminates Current Transformers • Two Current Sensor Inputs with Selectable Differential Mode • Selectable Gain of 1 or 8 for One Current Input to Support Shunts • High-Speed Wh/VARh Pulse Outputs with Programmable Width • Digital Temperature Compensation Improves System Performance • Metrology Compensation • Accurate RTC for TOU Functions with Automatic Temperature Compensation for Crystal in All Power Modes • Power Management Extends Battery Life During Power Outages • Three Battery-Backup Modes: o Brownout Mode (BRN) o LCD Mode (LCD) o Sleep Mode (SLP) • Wake-Up on Pin Events and Wake-On Timer • 1µA in Sleep Mode Single Converter Technology is a registered trademark of Maxim Integrated Products, Inc. |
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