The low power implementation demo is used for power mode switch, wake up time measurement and low power current measurement on the FRDM-MCXA153 board.
- MCUXpresso IDE V11.9.0 or later
- SDK_2.14.0_FRDM-MCXA153
- MCUXpresso for Visual Studio Code: This example supports MCUXpresso for Visual Studio Code, for more information about how to use Visual Studio Code please refer here.
- FRDM-MCXA153 Rev A board:
- One Type-C USB cable.
If you want to measure wake up time, prepare an oscilloscope.
If you want to measure low power current, prepare MCU-Link Pro or Ammeter.
- Use a Type-C USB cable to connect J15 of FRDM-MCXA153 and the USB port of the PC.
- Open MCUXpresso IDE 11.9.0, in the Quick Start Panel, choose Import from Application Code Hub
- Enter the demo name in the search bar.
- Click Copy GitHub link, MCUXpresso IDE will automatically retrieve project attributes, then click Next>.
- Select main branch and then click Next>, select the MCUXpresso project, click Finish button to complete import.
You need to install the SDK_2.14.0_FRDM-MCXA153 on your MCUXpresso IDE.
- Click Build button from the toolbar, then wait for the build to complete.
- Select the GUI Flash Tool from the toolbar to program the executable to the board.
- Open a serial terminal.
- Follow the prompts and enter one from A to E to enter different low power mode.
- Follow the prompts and enter one from 1 to 3 to select the wake up mode.
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Prompts the selected low power mode and wake up mode, the corresponding reference wake up time and low power current, and press SW3 on FRDM-MCXA153 to wake up the MCU.
Please only press the wakeup button when prompt message appears, otherwise it will result in failure to wake up!
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Use MCU-Link Pro and MCUXpresso IDE to measure low power current:
- Connect MCU-Link Pro board to FRDM-MCXA153 board.
MCU-Link Pro FRDM-MCXA153 J9-1 JP2-1 J9-3 JP2-2 J9-2 J3-14 - Follow below steps to measure current with MCUXpresso IDE.
- You can also use an ammeter to measure the current at JP2 of the FRDM-MCXA153 board.
- Get the wake up time by measuring the delay between the falling edges of J1-1 (P1_7) and J4-12 (P3_30) using an oscilloscope.
The following wake up time and low power current are provided as a reference:
P represents production sample, E represents engineering sample.
The typical wake up time correspond to low power wake up time in the datasheet.
Temperature, measuring instrument and wake up source etc. can affect wake up time.
There is no special gate all peripherals clock, and DeepPowerDown mode retained all RAM, so the measured current will be a little different from the data in the datasheet.
| Power mode | Wake up mode | Wake up time(P) | Wake up time(E) | Power consumption(P & E) |
|---|---|---|---|---|
| Sleep | Typical | 0.27us | 0.27us | 1.72mA |
| Sleep | Fast | 0.14us | 0.14us | 3.27mA |
| Sleep | Slow | 1.04us | 1.04us | 0.82mA |
| DeepSleep | Typical | 7.52us | 4.61us | 22.1uA |
| DeepSleep | Fast | 5.90us | 2.65us | 965.2uA |
| DeepSleep | Slow | 14.59us | 11.98us | 22.0uA |
| PowerDown | Typical | 17.26us | 13.99us | 6.2uA |
| PowerDown | Fast | 7.79us | 4.49us | 202.8uA |
| PowerDown | Slow | 39.74us | 36.89us | 6.2uA |
| DeepPowerDown | Typical | 2.35ms | 2.76ms | 1.1uA |
No FAQs have been identified for this project.
Please contact NXP for additional support.
Questions regarding the content/correctness of this example can be entered as Issues within this GitHub repository.
Warning: For more general technical questions regarding NXP Microcontrollers and the difference in expected funcionality, enter your questions on the NXP Community Forum
| Version | Description / Update | Date |
|---|---|---|
| 1.0 | Initial release on Application Code Hub | January 30th 2024 |