The P89V664 has an abnormal watchdog behaviour: 1) Enable watchdog -> ok 2) Serve the watchdog -> ok 3) Don\'t serve the watchdog: - Reset condition is detected (5us high on RST @18MHz) - Device does NOT continue with RESTART user-program (abnormal behaviour), and does also not continue the program in the main loop (which is expected because the reset condition was given)
Remarks: - User program works properly on P89C664 - Yes, I know the migration-sheet from Kees - ALE has pull-up-resistor (recommend) - VDD is ok - Error can be observe every time and on multiple devices
Any solutions?
Best regards, Claus