This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
A customer is using MSP430F1122 and they are having issue of missing GPIO interrupt at low temperatures (-10 degC). The MSP is powered by 3.6V battery, and they are feeding pulses between 2.8 - 3.2.V with 20us wide, rise/fall time around 2 us.
At normal room temperature, they see that they are getting the correct GPIO interrupts, but they are missing in the low temperatures.
Is this something expected? What would be the approximate threshold in -10 degC for 3.6V supply?
Errata PORT3 mentions that "port interrupts can get lost if they occur during CPU access of the P1IFG and P2IFG registers". Is the customer's code doing this? Perhaps, the cold temperature is affecting the timing of the code execution and causing this scenario to occur.
MSP Customer Applications
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to James Evans:
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.