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Editorial Team
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Asked: 2026-05-12T16:56:56+00:00

I understand this is a specific question, but I haven’t been able to find

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I understand this is a specific question, but I haven’t been able to find any clue even to the answer anywhere.

I have a Renesas SH7211 microcontroller on a board, and I’d like to program its User Boot MAT.
I’m using the HEW that Renesas provides, and E10A debugger(Also have FDT installed)
I have the buttons to boot it up from that MAT, but I can’t find anywhere how to configure HEW so that it compiles a project for the User Boot Mode, and also can’t find how to write it into the correct space. Their support suggests using the FDT, but it doesn’t accept E10A as a writing tool.

Any suggestions will be really helpful.

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  1. Editorial Team

    After some digging, and several answers from Renesas support my conclusions are the following on the subject:

    There is no way to write to the User Boot MAT using the debuggers, also there is no way to debug a program running in the User Boot MAT. Appearantly it’s true for all the series of these processors, but don’t catch me on this.

    To write to the User Boot, you have to connect to the Processor in Boot Mode using RS-232 (SCIF1 Port) with the FDT (Generic Device Settings), and specify in the options of the FDT to load it to the User Boot Section.

    What the support suggest regarding debug is to load the program into the regular MAT, and debug it there. This makes it quite hard to debug the Flash Writing procedures, which the User Boot MAT is for, but there’s no other way currently to do it.

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