The 71M6531D-IM/F is an energy meter IC in 68 pin QFN package. This highly integrated systems-on-chip (SOC) with an MPU core, RTC, FLASH and LCD driver. The patented Single Converter Technology with a 22bit delta-sigma ADC, four analogue inputs, digital temperature compensation, precision voltage reference, battery voltage monitor and 32bit computation engine (CE) supports a wide range of residential 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. The IC supports 2-wire, 3-wire single phase and dual phase residential metering along with tamper detection mechanisms. It offers single ended inputs for two current channels and two single ended voltage inputs.
- Supply voltage range is 3V to 3.6V
- Operating temperature range from -40°C to 85°C
- Wh accuracy < 0.1% over 2000:1 current range, exceeds IEC62053/ANSI C12.20 standards
- Four sensor inputs, four-quadrant metering & energy display during mains power failure
- Low-jitter Wh & VARh plus 2 additional pulse test outputs (4 total, 10KHz maximum) with pulse count
- Line frequency count for RTC, digital temperature compensation & independent 32bit CE
- 46Hz-64Hz line frequency range with same calibration, phase compensation (± 7°)
- BROWNOUT (52μA typ), LCD (21μA typ, DAC active) & SLEEP (0.7μA typ) are 3 battery backup modes
- 8bit MPU (80515), 1 clock cycle per instruction, 10MHz maximum with integrated ICE for debug
- Tamper detection (neutral current with CT, rogowski or shunt, magnetic tamper input)
测试与测量