Hello,
I use a Infineon C509 controller on a self-developed microcontroller board.
doesn't start. Even resetting the microcontroller doesn't help !!! I have to remove power supply and reconnect it to get the microcontroller running.
Only a few components on the microcontroller board effect the startup process of the board:
- microcontroller C509-LM
- Address Latch (74HC573)
- Flash (AT29C256) (containing the program to run)
- GAL (Atmel 22F22V10) (doing some chipselect signals)
Every component has enough capacitors on the supply pins. When the microcontroller doesn't start, the oscillator works.
What I want to ask you is if you have any experience with the electrical limits of one of these components. Maybe you had some similar problems at power up, too. Right now I have no glue where to start....
BEST REGARDS
Christian