Other Parts Discussed in Thread: MSP-EXP430FR2433
Hi all, I'm trying to reproduce the MSP430FR2433 lockup described by CS13:
The device might enter lockup state if DCO frequency is above 2 MHz and two events happen at the same time:
1) The device transitions from AM to LPM3/4 (e.g. during ISR exits or Status Register modifications)
2) An interrupt is requested (e.g. GPIO interrupt).
but so far I haven't been able to reproduce it. (I'm trying to reproduce it so I can be certain that the workaround works in my final product.)
Are there any tricks to trigger errata CS13? Is there a temperature component involved?
My test case: MSP-EXP430FR2433 board running at 16MHz, with a pin configured as an interrupt. Interrupt pin is wired to a function generator sweeping between 0-1MHz. The interrupt toggles an LED and goes back to LPM3. The LED never stops flashing, and therefore the lockup never occurs.
