We use 320VC33 in the temperature range -40 to +70°C in an application. The clock frequency is 30 Mhz.
We have used TMS320VC33PGE-120 in several times when there have been problems with availability.
We have one card that is malfunctioning on the serial port in sub-zero temperatures. Chip Revision is 1.3.
We have noticed that in the cold so shifted data to the serial port one clock cycle. Could be a problem with interrupt handling or any internal false clocking.
Is your assessment that it is random and not related to the components are rated 0 to 90 ° C?
Do you think that there may be problems in the cold with these?
Has there been any chip change in recent years?