71M6545-IGT/F

MAXIM INTEGRATED PRODUCTS  71M6545-IGT/F  芯片, 特殊功能

The is a metrology processor in 64 pin LQFP package. Processor is based on 4th-generation metering architecture supporting the 71M6xxx series of isolated current sensing products that offer drastic reduction in component count, immunity to magnetic tampering and unparalleled reliability. It integrates Single Converter Technology with a 22bit delta sigma ADC, a customizable 32bit computation engine CE for core metrology functions as well as a user programmable 8051- compatible application processor MPU core with up to 64KB flash and up to 5KB RAM. An external host processor can access metrology functions directly through SPI interface or alternatively through embedded MPU core in applications requiring metrology data capture, storage and pre-processing within metrology subsystem. It device integrate an RTC, DIO and UART. It is used in energy meters.

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Supply voltage range is 3V to 3.6V

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Operating temperature range from -40°C to 85°C

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0.1% typical accuracy over 2000:1 current range, exceeds IEC 62053/ANSI C12.20 standards

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Up to 4 pulse outputs with pulse count, phase compensation ±7°, flash security

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7 sensor inputs with neutral current measurement, differential mode selectable for current inputs

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Selectable gain of 1 or 8 for one current input to support shunts, flash/RAM size is 32KB/3KB

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High speed Wh/VARh pulse outputs with programmable width, up to 29 DIO pins

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Digital temperature compensation, metrology compensation & in-system program update

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Hardware watchdog timer WDT, I2C/MICROWIRE EEPROM interface and UART

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SPI interface for host, full access to shared memory space, flash program capability