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MSP430FR5994: Booting inconsistency, provided Same RC value on RESET line as per datasheet

SARAVANA KUMAR
Prodigy 110 points

Part Number: MSP430FR5994

Hello All,

We are using MSP430FR5994IPNR on our one of the product & observed board Booting inconsistency (two to four times failing out of 10 times boot). where the GPIO didnt behave as expected, but other times its working fine. 

provided Same RC value on RESET line ( 470 uSec Same as Datasheet, minimum 2 uSec ). But as per Launchpad its mentioned as 47uSec. 

I'm hereby enclosing RESET schematic screen shot for ur ref, 

Any of you this community faced issue like this.

  • 0
    TI__Mastermind 49692 points

    Hello,

    I see you're using a pull-up resistor (R48) that's 4.7 kOhms rather than the recommended 47 kOhms. Also, your pull-down capacitor (C63) should be 1 to 2.2 nF rather than 0.1 uF. Changing these components should help resolve the issue. Based on your JTAG interface (SBW or 4-wire), refer to the recommended JTAG circuits found in the MSP430 Hardware Tools User's Guide.

    I would also recommend looking carefully through the MSP430FR5994 datasheet to make sure your unused I/O's are properly terminated and that the capacitances for DVCC, AVCC, VCORE, etc. are all correct in your design.

    Regards,

    James

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