SLAU664B February   2016  – August 2017

 

  1.   MSP430FR2311 LaunchPad™ Development Kit (MSP‑EXP430FR2311)
    1.     Trademarks
    2. 1 Getting Started
      1. 1.1 Introduction
      2. 1.2 Key Features
      3. 1.3 What's Included
        1. 1.3.1 Kit Contents
        2. 1.3.2 Software Examples
      4. 1.4 First Steps: Out-of-Box Experience
        1. 1.4.1 Connecting to the Computer
        2. 1.4.2 Running the Out-of-Box Demo
      5. 1.5 Next Steps: Looking Into the Provided Code
    3. 2 Hardware
      1. 2.1 Block Diagram
      2. 2.2 Hardware Features
        1. 2.2.1 MSP430FR2311 MCU
        2. 2.2.2 eZ-FET Onboard Emulator With EnergyTrace™ Software
        3. 2.2.3 Emulator Connection: Isolation Jumper Block
        4. 2.2.4 Application (or "Backchannel") UART
        5. 2.2.5 Special Features
          1. 2.2.5.1 Smart Analog Combo (SAC)
      3. 2.3 Power
        1. 2.3.1 eZ-FET USB Power
        2. 2.3.2 BoosterPack Plug-In-Module and External Power Supply
      4. 2.4 Measure MSP430 MCU Current Draw
      5. 2.5 Clocking
      6. 2.6 Using the eZ-FET Emulator With a Different Target
      7. 2.7 BoosterPack Plug-in Module Pinout
      8. 2.8 Design Files
        1. 2.8.1 Hardware
        2. 2.8.2 Software
      9. 2.9 Hardware Change log
    4. 3 Software Examples
      1. 3.1 Out-of-Box Software Example
        1. 3.1.1 Source File Structure
        2. 3.1.2 Power Measurement
      2. 3.2 Blink LED Example
        1. 3.2.1 Source File Structure
      3. 3.3 Software I2C Example
        1. 3.3.1 Source File Structure
    5. 4 Resources
      1. 4.1 Integrated Development Environments
        1. 4.1.1 TI Cloud Development Tools
          1. 4.1.1.1 TI Resource Explorer Cloud
          2. 4.1.1.2 Code Composer Studio Cloud
        2. 4.1.2 Code Composer Studio IDE
        3. 4.1.3 IAR Embedded Workbench for Texas Instruments MSP430
        4. 4.1.4 Energia
      2. 4.2 LaunchPad Websites
      3. 4.3 MSPWare Software and TI Resource Explorer
      4. 4.4 FRAM Utilities
      5. 4.5 MSP430FR2311MCU
        1. 4.5.1 Device Documentation
        2. 4.5.2 MSP430FR2311 MCU Code Examples
        3. 4.5.3 MSP430 MCU Application Notes and TI Designs
      6. 4.6 Community Resources
        1. 4.6.1 TI E2E Online Community
        2. 4.6.2 Community-at-Large
    6. 5 FAQ
    7. 6 Schematics
  2.   Revision History

2.4 Measure MSP430 MCU Current Draw

To measure the current draw of the MSP430FR2311 MCU using a multi-meter, use the 3V3 jumper on the jumper isolation block. The current measured includes the target device and any current drawn through the BoosterPack headers.

To measure ultra-low power, follow these steps:

  1. Remove the 3V3 jumper in the isolation block, and attach an ammeter across this jumper.
  2. Consider the effect that the backchannel UART and any circuitry attached to the MSP430FR2311 MCU may have on current draw. Consider disconnecting these at the isolation jumper block, or at least consider their current sinking and sourcing capability in the final measurement.
  3. Make sure there are no floating inputs/outputs (I/Os). These cause unnecessary extra current draw. Every I/O should either be driven out or, if it is an input, should be pulled or driven to a high or low level.
  4. Begin target execution.
  5. Measure the current. Keep in mind that if the current levels are fluctuating, it may be difficult to get a stable measurement. It is easier to measure quiescent states.

EnergyTrace software allows you to compare various current profiles and better optimize your energy performance!