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MSP430F6733: Device does not wake up after reset

Intellectual 2015 points

Replies: 2

Views: 123

Part Number: MSP430F6733

Hi Team,

1MSP430F6733(80pin) does not wake up after several times of /RST switching.

keeping 3.3V on VDD, if I apply PWM that has 2s offtime and 1s on time on /RST port, after 20s~40s, device does not wake up and can't reset with reset port. MCU is stuck and no response at all.

if I make cut power supply on VDD and re-apply 3.3V on VDD, then it starts running.

what can make this happen?

I loaded TI example code so it's not software problem.

I attached customer's schematic.

FRONT SCH.PDF

Any ideas on this?

Best Regards,

Ted

  • Hello Ted,

    Thanks for posting.

    We will look into this and get back to you.

    Thanks,

    Yiding 

  • Hello Ted,

    Just want to clarify the setup you are using.

    So you have a PWM signal applied on test point R and you are able to reset the device at first but after 20~40s you cannot reset the device anymore right?

    Do you try connect test point R directly to GND and will that reset the device? 

    Thanks,

    Yiding  

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