Hi Collegues,
we are using the Infineon C513AO-LN after EoL of C513A. Out of a batch of 100 controllers, 43 pieces do not work when INT0 is on logic Low at the start. All processors work with INT0=high. New features of C513AO compared to C513A are Sleep and watchdog. During malefunction: Oscillator, ALE, PSEN working, Adresses are 0..FF, A8..A15 all time low. Data D0..D7 with partly limited to 2 V. SFR were additionally defined to its reset values. VCC is perfect, MAX700 used to keep processor on Reset for 400ms. Manual reset doesn't help. Can somebody give any hint? Wolfgang