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CC2530-ZNP-MINI turn off VDD_EXT

Cristiano Tenuta
Prodigy 40 points

Other Parts Discussed in Thread: MSP430F2274, CC2530

Hi.

I'm developing a wireless sensor prototype based on the CC2530-ZNP-MINI.

I have a doubt about the low power modes and the VDD_EXT. My sensor is powered on by VDD_EXT output on port P2 of the CC2530-ZNP target board.

I wonder if you can disable the power supply to the sensor via software without the need to use other electronic components. If the sensor can not be turned off, the low power mode will not help much.

I appreciate if someone can help me.

Thanks in advance





  • 0
    TI__Genius 10650 points

    Hello Cristiano,

    VDD_EXT is the external power supply pin on the CC2530-ZNP-Mini Board. Since it is not power coming out of MSP430F2274 or CC2530 low power mode or software control is not an option. To use software to control the supply to sensor you would need to check if the current supply from the IO pin is sufficient for your sensor to be driven (check MSP430F2274 datasheet). If yes, you can drive the sensor using IO pin on MSP430F2274 as output then you and can drive the output as low when you dont have to drive the sensor or supply power to it.

    Hope this helps

    Regards,

    Suyash Jain