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TMS320F280039: How many time of XRSn?

Shuqing Zhou
Expert 3635 points

Part Number: TMS320F280039

Hi team,

I ask this for my customer.

My customer will pull down the XRSn pin to realize the hardware reset

My customer want to check how the XRSn influence the device's longevity :
1. After how many times XRSn reset, the device will fail?

2. After how many years, the device will fail?

Thansk for your reply

BRs

Shuqing

  • 0
    TI__Expert 7396 points

    Hi Shuqing,

    The thread is assigned to the corresponding expert, please expect a response shortly.

    Thanks,

    Sahana

  • 0
    TI__Mastermind 18856 points

    Hi,

    There is no specified maximum number of times the XRSn (External Reset) pin can be asserted before a microcontroller (MCU) fails. Unlike flash memory, which has a finite number of "write/erase" cycles, a reset pin is a digital input designed for repeated use throughout the device's operational life.

    While the silicon itself doesn't "wear out" from logic transitions, the external components (like a physical reset button or pull-up resistors) may have mechanical or electrical fatigue limits. Also avoiding partial resets and  holding Xrsn down for sufficient time as mentioned in datasheet are some of good practices to follow.

    Thanks