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C166: JTAG OCDS Debugger Support

Information in this article applies to:

  • C166 Version 4.26 and later


Does Keil Software offer a JTAG debugger for the C161U, C165H, C165UTAH, and XC16x devices?


Yes, OCDS (On-Chip Debugging System) support is built-in to the µVision debugger. This interface is also part of the free evaluation software.

The physical OCDS interface is documented in the help file ..\C166\HLP\OCDS.CHM that comes with the software. You may connect the debugger with Keil ULINK2 or a wiggler interface that is available in the starter kits and connects to a PC parallel port.


  • Refer to Infineon in the ULINK2 User's Guide.

Last Reviewed: Thursday, February 25, 2021

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