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LP-MSP430FR2476: Reduce the startup time

Bing Wang
Prodigy 10 points
Part Number: LP-MSP430FR2476


Hello,

I have an application that periodically powers on and powers off the MSP430 and the MSP430 needs to read the Pins and do some processing work and read/save values in the FRAM, the power on time is 200µs, which means MSP430 should do all the work within 200µs. I measured the startup time(from power on to first line of code setting a Pin high) on LP-MSP430FR2476, which was above 750µs, my question is , is it at all possible to reduce the startup time to, say 50µs? Or is it possible in other MSP430 types? Thanks.

regards,
Bing

  • 0
    Guru 24765 points

    The device specification for coming out of reset is 1ms (add C startup time to that) and seems to be pretty typical for all MSP430s. For faster startup times you are going to have to use a low power mode instead of cycling power. Wakeup from LPM4, for example, is 10us.

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