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DEBUG problem ( CY7C68013A )

Hi all,
I have a problem with KEIL Debugger, with the following steps I can't use the KEIL DEBUGGER:

- I plug my board with CY7C68013A chip
- I open CyConsole EZ-USB software
- I select mon-int-sio1 monitor in C:\Cypress\USB\Target\Monitor directory and I download this monitor in my CY7C68013A chip
- I open my simple project with KEIL software and I rebuild all target files with success
- I run Start/Stop Debug Session but my firmware is downloaded partially, only 35%

With oscilloscope I have verified data flow from PC to CY7C68013A and dataflow from CY7C68013A to PC, when the written one appears "CONNECTION TO TARGET SYSTEM LOST!" the CY7C68013A chip it stop to send data.
If I download my simple firmware with CyConsole EZ-USB software ( without KEIL debugger ), it works.

Help me please.
Thank You

Paolo

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