Hardware requirements

  • Micro USB cable

  • MIMXRT700-EVK board

  • Personal Computer

Board settings

JP7(2-3) connected for 3.3V supply for VDDIO_2. JP55(1-2) disconnected to ommit the impact of MCU-LINK during DPD and FDPD mode.

The board supports multiple power supply options. The code should be aligned with power supply on the board.

  1. VDDN supplied by internal DCDC, VDD1 and VDD2 by PMC LDOs. Jumper setting - JP1(Open), JP2(1-2), JP3(Open), JP4(1-2) Code setting(power_demo_config.h) - #define DEMO_POWER_SUPPLY_OPTION DEMO_POWER_SUPPLY_PMC

  2. VDDN supplied by PMIC, VDD1 and VDD2 by PMC. Jumper setting - JP1(Open), JP2(2-3), JP3(Open), JP4(1-2) Code setting(power_demo_config.h) - #define DEMO_POWER_SUPPLY_OPTION DEMO_POWER_SUPPLY_MIXED

  3. Default power supply. Use PMIC to supply all. Jumper setting - JP1(1-2), JP2(2-3), JP3(1-2), JP4(1-2) Code setting(power_demo_config.h) - #define DEMO_POWER_SUPPLY_OPTION DEMO_POWER_SUPPLY_PMIC

NOTE: When entering Deep Power Down or Full Deep Power Down modes, both core0 and core1 should request entering the mode.

Prepare the Demo

  1. Connect a micro USB cable between the PC host and the MCU-LINK USB port (J54) on the board.

  2. Open a serial terminal with the following settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  3. Download the core0 program to the target board.

  4. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo

The log below shows the output of the power manager test demo in the terminal window:

Power Manager Test.

Normal Boot.

Please select the desired power mode:
        Press A to enter: Sleep
        Press B to enter: Deep Sleep
        Press C to enter  Deep Sleep Retention
        Press D to enter: Deep Power Down
        Press E to enter: Full Deep Power Down

Waiting for power mode select...

Next Loop

Please select the desired power mode:
        Press A to enter: Sleep
        Press B to enter: Deep Sleep
        Press C to enter  Deep Sleep Retention
        Press D to enter: Deep Power Down
        Press E to enter: Full Deep Power Down

Waiting for power mode select...