• With our regular twisted thought for extending capability of what is already out there. We had added a small 1220 battery socket and header pin as means to keep internal clock and partial memory running when the CPU is powered off. Diode steering provides power to the pin in case when battery is not utilized and thus properly powering the controller.
  Pin outs of the module are naturally different then the original layout so that will need to be kept in mind when replacing it or wiring things up.
  When populating the board family of St32F4xx processors can be utilised in in QFN packaging format.
  
  
  Features

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  Documents

     Schematic
     PCB laybout on EasyEDA
     Sample code