In SX Microcontrollers, SX/B Compiler and SX-Key Tool, jmokie wrote:

Hi, new to this forum and to this micro.  Have replicated the power & SX-key ckt from SX Tech board on a board for my robot.  When trying to download program for the first time, I get a "communication connection failed" error, but it shows that the program was downloaded.  Same chip installed in the SX Tech board downloads without problem.
 

Any idea?

Jerry

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