Sulfated bis-cyclic compounds that are potent anticoagulants and methods for their manufacture are provided. By adding a small amount of the element such as Co, Ni, Mn or Zn to the ferrite already having the hexagonal M-type magnetoplumbite structure during the fine pulverization process thereof, the magnetic properties can be improved. In one embodiment of the present invention, the controller is adapted to write initial-configuration data to at least one POL regulator via the serial bus.