1.1.1 Scope

The PIC32CXMTx-DB Demonstration Kits are based on Microchip PIC32CXMTx series SoC, allowing 3000:1 dynamic range and 0.2s accuracy class using standard external components. This is a solution for smart energy applications built around two high performance 32-bit Arm Cortex-M4F processors, including an internal (PIC32CXMTSH-DB) or external (PIC32CXMTC-DB) energy metering analog front end. The processors operate at a maximum speed of 200 MHz (Core 0) and 240 MHz (Core 1). The dual Arm Cortex-M4F architecture allows the integration of application layer, communications layers and security functions in a single device. The boards are designed to interface with Current Transformers, Rogowski Coils and Shunt Resistors current sensors. It can also interface with communications devices, such as PLC and/or RF modules from Microchip.

This section introduces the PIC32CXMTx-DB and describes how to work with the demonstration kits as well as the main functionalities of the demo meter application software running in the boards. Users may choose PIC32CXMTSH-DB for single-phase and dual-phase (2 voltages and 2 currents) meter evaluation or choose PIC32CXMTC-DB for poly-phase meter evaluation.

Warning: The demo meter application software shows how to initialize the Core 1 and the metrology library, and how to interact with the metrology library using the shared memory area and the IPC interrupts. Additionally, it includes several examples of typical features of a metering application (calibration, energy accumulation, storage in non-volatile memory, LCD management, low power modes, and so on). Accordingly, the demo meter software should be considered as an useful tool to evaluate the features of the metrology library and to speed up the development of the meter application. But it is not intended to be a fully featured and complete implementation of a commercial meter. The meter manufacturer is responsible for the final application development, meeting the required standards, regulatory requirements and features desired for the product