Manuals+

Flash Operations on MSP432™ MCUs

An Application Report from Texas Instruments

Introduction

This application report details the intricacies of flash memory operations on the powerful and feature-rich MSP432™ MCUs. It guides users through abstracting the complexities of the flash controller's programming model, enabling cleaner application code. The report highlights the benefits of executing DriverLib from ROM, simplifying boundary requirements for flash operations and bank switching.

Discover how to leverage the robust DriverLib APIs for efficient flash management, avoiding the complexities of custom driver development. This document provides practical use cases and examples for fundamental flash operations and advanced techniques.

For project collateral and detailed examples, visit: www.ti.com/lit/zip/SLAA704

Key Features and Techniques

  • Basic Flash Operations: Understand simple erase and program operations, and how DriverLib simplifies complex requirements like multipulse programming and bit masking.
  • TLV Parsing: Learn to retrieve critical flash controller information, such as the maximum number of retries for operations, from the device's TLV structure.
  • Executing DriverLib APIs From ROM: Explore the advantages of using the `MAP_` prefix to execute DriverLib APIs directly from ROM, ensuring reliability and simplifying code.
  • Sector Protection: Configure flash protection settings to allow or disallow flash erases and programs for specific memory banks and sectors.
  • Sector Erase (Blocking): Utilize blocking erase APIs for single sector and mass erase operations, where control is returned only after completion or failure.
  • Programming Flash (Blocking): Implement flash programming using the `FlashCtl_programMemory` API, with guidelines for optimal performance.
  • Interrupts and Blocking APIs: Understand how blocking flash APIs manage interrupts during execution to ensure operation integrity.
  • Performance of DriverLib APIs: Review typical latencies for various flash operations, including program, erase, and mass erase.
  • Dual Bank Erase (Nonblocking): Explore advanced techniques for nonblocking dual bank erase, enabling low-power modes during erase operations.

References

  • MSP432P401R, MSP432P401M Mixed-Signal Microcontrollers
  • MSP432P4xx Family Technical Reference Manual
  • MSP Peripheral Driver Library

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