SLAU953 December   2024

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Hardware Overview
    2. 2.2 Power Requirements
    3. 2.3 XDS110 Debug Probe
    4. 2.4 Measure Current Draw of the MSPM0L1117
    5. 2.5 Clocking
    6. 2.6 BoosterPack Plug-in Module Pinout
  9. 3Software
    1. 3.1 Software Development Options
    2. 3.2 21
    3. 3.3 CCS Cloud
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials (BOM)
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6Related Documentation
    1. 6.1 Supplemental Content

2.4 Measure Current Draw of the MSPM0L1117

To measure the current draw of the MSPM0L1117 MCU using a multimeter, use the 3V3 jumper on the J22 jumper isolation block. The current measured includes the target device, LaunchPad circuits, and any current drawn through the BoosterPack plug-in module headers. To measure ultra-low power, follow these steps:

  • Remove the 3V3 jumper in the J22 isolation block, and attach an ammeter across this jumper.
  • Consider the effect that the backchannel UART and any circuitry attached to the MSPM0L1117 can have on the current draw. Consider disconnecting these at the isolation jumper block, or at least consider the current sinking and sourcing capability in the final measurement.
  • Make sure there are no floating inputs/outputs (I/Os) on the MSPM0L1117. This causes unnecessary extra current draw. Every I/O is either driven or, if the I/O is an input, is pulled or driven to a high or low level.
  • Begin target execution.
  • For the most accurate current measurements, place the device in Free Run mode and disconnect programming signals between the MSPM0L1117 and the debug portion of the board (header J22).
  • Measure the current. Keep in mind that if the current levels are fluctuating, then getting a stable measurement can be difficult. Measuring the quiescent states is easier.