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As the headline states.

It seems to be hard to get! The uC is in a Siemens Landsi & Gyr Dialog. Power measurment equipment 3-phase ZMD120AMer53

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    \$\begingroup\$ What do you need it for? A microcontroller's datasheet doesn't tell you anything about the program it runs, for instance, so the datasheet won't make you any wiser about the operation of the meter. \$\endgroup\$ – stevenvh Sep 24 '12 at 12:43
  • \$\begingroup\$ :) No but a datasheet can tell me how it is connected to "the outside world". The datasheet will make me wiser, because if I understand the electric connections and the other circuits I understand their functions. In the terms of programming, I more or less already understands it. \$\endgroup\$ – Christian Sep 24 '12 at 14:30
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Here are a direct link to the microcontroller: http://documentation.renesas.com/doc/DocumentServer/U11377EJ3V0UD00.pdf

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