Brushless dc motor and manufacturing method thereof

A brushless DC motor comprising:

• a rotor portion rotatable about a center axis and including a magnet;
• a stationary portion including an armature facing the magnet, the armature including a wire wound around a stator core;
• a bearing rotatably supporting the rotor portion relative to the stationary portion;
• a base portion;
• a circuit board connected to and facing the armature;
• a rotation control portion provided on the circuit board and including a non-volatile rewritable memory arranged to control rotation of the rotor portion based on data stored in the non-volatile rewritable memory;
• a driving circuit provided on the circuit board and arranged to provide driving current controlled by the rotation control portion;
• and
• a writing terminal port provided on the circuit board and arranged to be detachably connected to an external memory writer;
• wherein
• the circuit board is axially arranged between the armature and the base portion;
• and
• the writing terminal port is arranged on a side of the circuit board facing the armature, and the writing terminal port is arranged radially outward relative to an outer side of the armature.