SLUUDP1 November   2026 MC111 , MC121 , MC121-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Test Programming Mode Entry and Exit:
  6. 3OTP Programming Mode Entry and Exit
  7. 4How to Determine which OTP Page is Available to Program
  8. 5Summary

Abstract

This document outlines the procedures for utilizing the Test Programming Mode and OTP (One-Time Programmable) Programming Mode through an I2C interface on the MC121-Q1, MC121, and MC111 devices. By leveraging the PWM/DC and FG/RD pins for I2C communication, users can configure device registers to set specific motor performance parameters. These devices features two OTP pages, allowing the configuration to be programmed up to two times. The document provides a logic framework for determining page availability by evaluating status register values. A comprehensive register map is provided, covering CRC validation, page selection, unlocking sequences, and I2C mode status. This guide serves as a technical reference for engineers to facilitate successful device testing, configuration, and permanent programming of motor control parameters.