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The internalrc applet forces the selection of the internal 12MHz RC, instead of any external crystal oscillator, as the source the MAIN clock (MAINCK).
This is a work-around that must be called once for all after each reset before programming any fuse word in the Secure Fuse Controller (SFC) on board designs using an external crystal oscillator with a frequency different from 12MHz. Indeed, internal timings of the SFC for programming fuse words are only valid for MAINCK running at 12MHz.
The internalrc applet doesn't accept any parameter to be initialized.
The internalrc applet doesn't support any command.
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