NXP Semiconductors EM783-MC6E

Overview

EM783-MC6E from NXP Semiconductors is a multi-channel energy measurement application processor with ARM Cortex-M0 core (up to 36 MHz), integrated metrology engine delivering 2% accuracy, 6 current-input/1 voltage-input channel configuration, 6.5 kB SRAM, and 24 kB flash memory - deployed in smart plug meters and industrial sub-meters.

For engineers reviewing the EM783-MC6E datasheet, EM783-MC6E pinout, EM783-MC6E application, or EM783-MC6E equivalent, key selection criteria include metrology accuracy (2%), dynamic range (1,000:1), on-chip temperature sensor (±3 °C), EEPROM-based calibration storage, and support for UART/SPI/I²C peripherals in a 33-pin HVQFN package.

Technical Context

The EM783-MC6E implements a dedicated metrology engine that performs real-time calculations of active/reactive/apparent power, power factor, Vrms, Irms, THD, and line frequency - with automatic compensation for temperature drift using its integrated ±3 °C sensor. It supports 45–65 Hz power-line frequency tracking and configurable measurement uptime.

Its ARM Cortex-M0 CPU executes open-source kWh generation firmware via an accessible API, enabling initialization, start/stop control, and data readout. The device uses advanced peripheral bus architecture to coordinate metrology engine outputs with serial interfaces and GPIOs without host intervention.

Key Specifications

Pinout & Package

EM783-MC6E is housed in a 33-pin HVQFN package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per variant-specific pin assignment table in NXP document 9397 750 17322.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar energy measurement applications.

Compared with EM783-MC3 and EM783-TP, the EM783-MC6E uniquely supports six independent current paths with single voltage reference - ideal for distributed load monitoring where phase alignment is not required and channel density is prioritized over per-phase voltage fidelity.

Availability

EM783-MC6E is available at Aetrix Electronics and suitable for smart plug meters, industrial sub-meters, and KNX/DALI metering nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for EM783-MC6E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The EM783 product line delivers integrated energy measurement processors targeting cost-sensitive, high-volume metering applications - combining metrology accuracy, ARM-based programmability, and peripheral flexibility in a single chip.

FAQ

What is the metrology accuracy specification for EM783-MC6E?

The EM783-MC6E delivers 2% metrology accuracy per IEC 62053-21 Class B requirements. This applies across its specified dynamic range of 1,000:1 below maximum current load and within 45–65 Hz power-line frequency. Calibration parameters are stored in on-chip 4 kB EEPROM to maintain this accuracy over time and temperature variation. The EM783-MC6E achieves this without external precision components.

How many current and voltage channels does EM783-MC6E support?

The EM783-MC6E supports six independent current-sense inputs (IA0–IA5) and one shared voltage-sense input (VA0). This configuration enables simultaneous monitoring of up to six discrete loads referenced to a common voltage source - making it suitable for multi-circuit sub-metering. The EM783-MC6E does not support per-phase voltage sensing like the EM783-TP variant.

Does EM783-MC6E include on-chip memory for calibration and logging?

Yes, the EM783-MC6E integrates 4 kB of EEPROM for persistent storage of calibration coefficients and energy consumption logs, 24 kB of flash memory for firmware execution, and 6.5 kB of SRAM for runtime variables and metrology buffers. This memory architecture eliminates the need for external non-volatile storage in most energy meter designs using the EM783-MC6E.

What serial interfaces are available on EM783-MC6E?

The EM783-MC6E provides UART (with RS485/IrDA support), SPI, and I²C interfaces, plus up to 22 GPIOs configurable as timers, counters, or interrupt sources. These interfaces allow direct connection to displays, external sensors, communication modules, or host controllers - all managed through the ARM Cortex-M0 core. The EM783-MC6E's peripheral set is fixed per variant and cannot be reconfigured beyond documented pin mappings.

What is the operating temperature range and thermal sensing capability of EM783-MC6E?

The EM783-MC6E operates from –40 °C to +85 °C and includes an on-die temperature sensor with ±3 °C accuracy. This sensor feeds real-time thermal data to the metrology engine for automatic compensation of gain/offset drift in current and voltage measurements. The EM783-MC6E uses this data internally - no external calibration or software intervention is required to maintain accuracy across its full temperature range.