PL8331 Single-Phase, Multifunction Energy Metering IC

The PL8331 series of ultra-low power mixed-signal processors consist of several devices featuring different sets of peripherals targeted for energy meter applications.

PL8331 Datasheet

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This resource is for PL8331 Single-Phase, Multifunction Energy Metering IC. Click download to view the document.

PL8331 Panel Meter Schematic

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This resource is for PL8331 Single-Phase, Multifunction Energy Metering IC. Click download to view the document.

Description

They integrate analog front end and fixed function DSP solutions with an enhanced 8052 MCU core, RTC and LCD driver in a single part. The measurement core includes active, reactive, apparent energy calculations, voltage, current RMS, and frequency measurements. This information can be used as energy billing and any necessary application. Also included are a built-in 16-bit timer, LCD segment drive capability and hardware multiplier.

The PL8331 integrates three PGAs with gain settings from 1x to 32x. Three 24-bit sigma-delta A/D converters guarantee precision in captured data and needed resolution.

The microprocessor functionality includes a single-cycle 8052 core, a real-time clock, UART, and an SPI, I2C and JTAG interface. It reduces the program memory size requirement and makes it easy to integrate complicated designs. The programming is very easy and supports multiple standards (SPI or JTAG). No external voltage is needed for programming.

Features

  • Wide supply voltage range: 2.4V to 3.6V
  • Ultra-low power consumption
    • Normal mode: Total: 2.2mA @ 3V
    • Sleep Mode: 3uA
    • RTC only: 1.1uA
  • Multi mode power saving function
  • Internal switch between regulated and battery inputs
  • Compatible with CTs, resistive shunts and Rogowski Coil sensors
  • Wake-up from standby mode in less than 5us
  • Operation temperature range: -40°C to +80°C
  • 64-LQFP(7×7) package

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