Microchip Technology PIC32CXMTC-DB User Manual

PIC32CXMTC-DB HW User's Guide

Introduction

The PIC32CXMTC-DB (EV58E84A) is a demonstration board for the PIC32CXMTC Series from Microchip
Technology Inc. This is a system-on-chip solution for residential smart meter applications built around dual 32-bit
® ®
Arm Cortex -M4F processors. The user application runs in Core 0 at a maximum frequency of 200 MHz and the
metrology library runs in Core 1 up to 240 MHz. The dual Arm Cortex-M4F architecture allows the integration of the
application layer, communications layers and metrology functions in a single device. The board includes a Poly-phase
(ATSENSE-301) Energy Metering Analog Front End with three voltage and four current sense channels. Current
channels are designed to interface with current transformers, Rogowski coils and shunt current sensors. It can also
interface with communications devices such as PLC and/or RF modules.
Target demonstrations summary:
• Metrology performance verification
• Dual-Core Cortex-M4F solution for meter firmware integration
• RF or PLC communication through modules plugged on dedicated extension ports
This user's guide introduces the PIC32CXMTC-DB Demonstration Board and how to get started with the board.

Contents

The Demonstration Kit includes the following:
• One PIC32CXMTC-DB board in an enclosure
• One Micro A/B-type USB cable
• One Plug-in adapter for programming/debugging boards with small 10-pin 0.05 inch connector by means of a
20-pin 1 inch connector
• One 12V AC/DC wall mount adapter with interchangeable plugs

Features

The PIC32CXMTC-DB board includes the following features:
• Dual Arm Cortex-M4F core (application and metrology)
• 3-Phase AFE ATSENSE301 (3 voltages and 4 currents) with network divider and filters
• Voltage range measurement is from 90 Vac to 264 Vac. It can be extended to 291 Vac removing the power
supply (U1)
• Current range measurement depends on the current sensor used and the configuration of the internal PGAs.
The current sensor input channels come populated with 3.24Ω burden resistors for a current transformer (CT)
• Compliant with CT, Shunt or Rogowski Coil sensors
• Battery-backed real-time clock and power supply monitor
• 64 Mbit Quad IO SPI Flash memory for meter data storage and firmware update
• User Interfaces:
– Isolated UART interface by USB bridge
– Opto-Port interface compliant with ANSI C12.20 protocol for AMR
– Isolated access to metering pulses (Wh, VARh, A
– Extension connector for External AFE connection such as MCP3910
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2022 Microchip Technology Inc.
and its subsidiaries
2
h) by an Opto-Port and/or an isolated interface
User Guide
EV58E84A
DS50003248C-page 1