71M6513-IGTR/F

Introduction

Key Features

Core & Measurement Engine

• 80515 MPU core: 8-bit microcontroller with single-cycle instruction execution for efficient program handling
• 21-bit delta-sigma ADC: High-resolution analog-to-digital conversion for precise energy measurement
• 32-bit computation engine (CE): Dedicated hardware for real-time energy calculations, reducing MPU load
• Standard accuracy: < 0.5% over 2000:1 current range, exceeding IEC 62053/ANSI C12.20 standards
• Six sensor inputs: Support for 3-phase voltage/current measurement plus neutral current monitoring
• Digital temperature compensation: Maintains accuracy across operating temperature range
• Precision voltage reference: < 50ppm/°C for stable measurement reference

Memory & Peripherals

• 64KB on-chip flash memory: In-system programmable for firmware updates and data storage
• 7KB on-chip RAM: For data processing and temporary storage
• LCD driver: Supports up to 168 pixels with 5V LCD charge pump for enhanced display contrast
• Two UART interfaces: For IR communication, optical port, and AMR (Automatic Meter Reading) applications
• I²C interface: For connecting external EEPROM and other peripherals
• 22 general-purpose I/O pins: Flexible for various meter functions and external device control
• Real-time clock (RTC): With battery backup support for time-of-use (TOU) metering applications
• Hardware watchdog timer: Ensures system reliability and recovery from faults
• Power-fail comparator: Monitors power supply and triggers appropriate system responses

Power & Packaging

• Wide voltage range: 3.0V to 3.6V for flexible power supply design
• Low power consumption: 22mW at 3.3V active mode, 7.2µW backup mode for extended battery life
• Battery backup support: Maintains RAM and RTC operation during power outages
• Multiple power-saving modes: Sleep and power-down modes for optimized energy efficiency
• 100-pin LQFP (14×14mm): Surface-mount package with 0.5mm pitch for compact PCB design
• Industrial temperature range: -40°C to +85°C for reliable operation in harsh environments
• RoHS compliant: Lead-free and halogen-free packaging meeting environmental standards

Additional Features

• Four-quadrant metering: Supports bidirectional energy flow measurement (import/export)
• Phase sequencing detection: Ensures correct phase connection for accurate billing
• Line frequency counting: For mains frequency monitoring and RTC calibration
• Pulse generation/counting: Low-jitter Wh/VARh pulse outputs for external verification
• Program security: Flash memory protection to prevent unauthorized access and modification
• Crystal frequency monitor: Ensures system timing accuracy

Typical Applications

• Residential electricity meters: Multifunction smart meters with TOU billing and remote reading capabilities
• Commercial energy meters: 3-phase power monitoring for offices, shops, and small businesses
• Industrial power meters: 0.5% accuracy measurement for factories, plants, and industrial facilities
• Smart grid endpoints: AMI (Advanced Metering Infrastructure) devices with communication capabilities
• Submetering systems: Energy monitoring for individual apartments, offices, or equipment in buildings
• Renewable energy systems: Net metering applications for solar PV and wind power installations
• Energy management systems: Real-time power monitoring and control for efficient energy usage
• Data center power monitoring: Precise energy measurement for server racks and critical infrastructure
• EV charging stations: Energy measurement and billing for electric vehicle charging applications
• Portable power meters: Battery-powered devices for on-site energy auditing and troubleshooting