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CCS/MSP430FR4133: Test pin lead to MCU reset issue in msp430fr4133/msp430fr5969/msp430f5438

Genius 16995 points

Replies: 4

Views: 2133

Part Number: MSP430FR4133

Tool/software: Code Composer Studio

 The issue is that when I make the test pin high or low on and off, the MCU will reset sometimes. The test signal as below:

Questions:      what cause the Rst/NMI reset event ?

  • Hi Gary,

    I will check this issue with team and feedback you.

     Wei,

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  • Hi Gary,

    Would you please check if the DVCC decoupling caps (10uF+0.1uF) are connected and not damaged? Better follow the DS recommendation.
    This kind of issue may happen if the caps are removed.

    Thanks,
    Jovi He
  • In reply to Jovi He:

    Hi Jovi:
    The hardware are LaunchPads and I test the caps are not breakdown.
    Thanks
  • Gary,

    1. Configure the RST/NMI to NMI function if the RST function is not required

    2. In field, if external noise at TEST pin trigger this RST,propose to add external pull-down resistor for improvement. you may refer to the doc http://www.ti.com/lit/ug/slau320z/slau320z.pdf

    Hope it helps.

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