SLVUDM2 October   2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Quick Setup – Motor Run Mode
    2. 2.2 Quick Setup – OTP Programming Mode
    3. 2.3 Hardware Overview
      1. 2.3.1 Motor PCB connection to MC121EVM
      2. 2.3.2 External Analog Speed Input
      3. 2.3.3 Onboard 12V Boost Circuit
    4. 2.4 MSP430FR2355 Microcontroller
  8. 3Software
    1. 3.1 EVM Firmware
    2. 3.2 GUI Installation
    3. 3.3 Getting Started With Motorstudio for MC121
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  10. 5Additional Information
    1.     Trademarks

3.1 EVM Firmware

The MC121EVM includes a USB-to-UART interface, using a MSP430FR2355 microcontroller, that serves as a communication bridge between a host PC and the MC121 or MC121-Q1 device for configuring various device settings and reading fault diagnostic information.

The MC121EVM is supported on the MOTORSTUDIO GUI which can be used to configure the MC121 or MC121-Q1 though this communication interface. The MOTORSTUDIO GUI simplifies the tuning process of the MC121 or MC121-Q1 by offering guided tuning instructions, a virtual oscilloscope for real-time variable monitoring, and more.

By default, the onboard MSP430 microcontroller already contains the firmware needed to communicate with the Motor Studio GUI. If there is a firmware update or the GUI does not connect to the EVM, then the user must flash the firmware code into the MSP430FR2355 by following the steps outlined in Section 2.4.

Flashing the firmware code onto the MSP430 requires an integrated development environment (IDE) or UniFlash tool.