Other Parts Discussed in Thread: TMS320F2812
Dear TI Team,
Our UPS products use 2812 as the main control chip. It is found that the IO ports (pins 29 and 20) of the DSP will occasionally send a pulse width of about 400us when the power is turned on, and the probability of occurrence is very low. Check the tms320f2812 manual and find that the IO pin of the DSP may output an uncertain level when VDD(1.9V)=1V and VDDIO(3.3V)=2.5V. How did this level come about? Is the pulse width 400us a fixed value? Is it possible to solve this problem with a filter circuit? Thanks!
