EVALUATION KIT AVAILABLE 71M6543FT/71M6543HT/ Energy Meter ICs 71M6543GT/71M6543GHT General Description Benefits and Features SoC Integration and Unique Isolation Technique The 71M6543FT/71M6543HT/71M6543GT/71M6543GHT Reduces BOM Cost Without Sacrificing Performance (71M654xT) are 4th-generation three-phase metering 0.1% Typical Accuracy Over 2000:1 Current systems-on-chips (SoCs) with a 5MHz, 8051-compat- Range ible MPU core, low-power RTC with digital temperature Exceeds IEC 62053/ANSI C12.20 Standards compensation, flash memory, and LCD driver. Our Single Four-Quadrant Metering Converter Technology with a 22-bit delta-sigma ADC, 46-64Hz Line Frequency Range with the Same seven analog inputs, digital temperature compensation, Calibration Phase Compensation (10) precision voltage reference, and a 32-bit computation Independent 32-Bit Compute Engine engine (CE) support a wide range of metering applications 64KB Flash, 5KB RAM (71M6543FT/71M6543HT) with very few external components. 128KB Flash, 5KB RAM (71M6543GT/71M6543GHT) The 71M654xT devices support optional interfaces to the Built-In Flash Security SPI Interface with Flash Program Capability Maxim Integrated 71M6x03 series of isolated sensors Up to Four Pulse Outputs with Pulse Count offering BOM cost reduction, immunity to magnetic tam- 8-Bit MPU (80515), Up to 5 MIPS per, and enhanced reliability. Other features include an Full-Speed MPU Clock in Brownout Mode SPI interface, advanced power management, ultra-low- LCD Driver Allows Up to 6 Commons/Up to power operation in active and battery modes, 5KB shared 56 Pins RAM, and 64KB/128KB flash memory that can be pro- Up to 51 Multifunction DIO Pins grammed in the field with code and/or data during meter Hardware Watchdog Timer (WDT) Two UARTs for IR and AMR operation and the ability to drive up to six LCD segments IR LED Driver with Modulation per SEG driver pin. High processing and sampling rates 2 I C/MICROWIRE EEPROM Interface combined with differential inputs offer a powerful platform Innovative Isolation Techno logy (Requires for residential meters. Companion 71M6xxx Sensor, also from Maxim A complete array of code development tools, demonstra- Integrated) Eliminates Current Transformers tion code, and reference designs enable rapid develop- Four Current Sensor Inputs with Selectable Differential Mode ment and certification of meters that meet all ANSI and Selectable Gain of 1 or 8 for One Current Input to IEC electricity metering standards worldwide. Support Neutral Current Shunt The 71M654xT family operates over the industrial tem- High-Speed Wh/VARh Pulse Outputs with perature range and comes in a 100-pin lead(Pb)-free Programmable Width LQFP package. Digital Temperature Compe nsation Improves System Performance Applications Metrology Compensation Accurate RTC for TOU Functions with Automatic Three-Phase Residential, C ommercial, and Industrial Temperature Compensation for Crystal in All Energy Meters Power Modes Ordering Information and Typical Operating Circuit appear Power Management Extends Battery Life During at end of data sheet. Power Outages Three Battery-Backup Modes - Brownout Mode (BRN) - LCD Mode (LCD) - Sleep Mode (SLP) Single Converter Technology is a registered trademark of Wake-Up on Pin Events and Wake-On Timer Maxim Integrated Products, Inc. 1A in Sleep Mode MICROWIRE is a registered trademark of National Semiconductor Corp. 19-6720 Rev 7 12/1571M6543FT/71M6543HT/ Energy Meter ICs 71M6543GT/71M6543GHT TABLE OF CONTENTS General Description ............................................................................ 1 Applications .................................................................................. 1 Benefits and Features .......................................................................... 1 Absolute Maximum Ratings ...................................................................... 7 Electrical Characteristics ........................................................................ 7 Recommended External Components............................................................. 13 Pin Configuration ............................................................................. 14 Pin Descriptions .............................................................................. 15 Block Diagram ............................................................................... 19 Hardware Description.......................................................................... 20 Analog Front-End (AFE) 21 Signal Input Pins . 21 Input Multiplexer 23 Delay Compensation 24 ADC Preamplifier . 25 Analog-to-Digital Converter (ADC) . 25 FIR Filter . 25 Voltage References . 25 Isolated Sensor Interface . 25 Digital Computation Engine (CE) . 26 M ete r Eq u at i o n s 26 Real-Time Monitor 26 Pulse Generators . 26 XPULSE and YPULSE . 27 VPULSE and WPULSE 27 80515 MPU Core 27 Memory Organization and Addressing 27 Program Memory . 27 MPU External Data Memory (XRAM) . 27 MOVX Addressing 27 Dual Data Pointer . 28 Internal Data Memory Map and Access . 28 Special Function Registers . 29 Timers and Counters 29 Interrupts . 31 Interrupt Overview 31 External MPU Interrupts . 31 On-Chip Resources . 31 Maxim Integrated 2 www.maximintegrated.com