MKE02Z64VLC4 start problem

[mariano268]

I´m using FRDM-KE02Z to program and debug an external board with a MKE02Z64VLC4. During de debugging in Codewarrior 10.6, always works fine. But when i try to power on the external board alone (without the debugger connected), nothing happen, the microcontroller does not start. I tried to connet the RESET pin to Vdd, GND, with capacitor and nothing. I don´t know what else to try. Something wrong with the internal oscilator? but it start correctly when the debugger is conected. I need your Help please. Thanks!

[mariano268]

Thank you very much for the replies. He had already solved the issue exactly as David says. The problem was that the project as a "debugger". Must be as UART or NONE to boot without the debugger.

[davidsherman · Accepted solution]

I had a similar problem under Codewarrior, the problem I had was in the project settings I had I/O support set for "debugger console" in the project options.  It would not work unless the debugger was connected.  Try making a new project with I/O support set for UART or none.  Reset is active low, so it should be pulled high.

[Paul_Tian]

Hi, Marco

Please check if you download code into flash of KE02. If you debug chip in RAM, MCU will not run after you remove debug tools. Thanks.

Best Regards

Paul