Hello Franz,

This Hitachi H8 family, the 3217 series (3202, 3212, 3214, 3216...), has a built-in clock pulse generator (CPG), and the internal clock signal is configurable by software. See attached diagram.

There is a Turbo Advanced Trainer with 20 MHz XTAL and another one with 10 MHz XTAL, getting the same internal clock signal.

But hap will give you a better explanation at emulation level.

Best,
Berger

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