The development of an application software for the new BIM M13x is supported by a modern development environment. The evaluation board (EVB) comprises the circuitry of the BIM M3x series containing a special debug type of the microcontroller, which provides the memory of the largest family member. This enables the developer to write the code for the desired application with the memory restrictions of the largest family member only. After coding has been completed, depending on the real memory requirement the developer decides for the BIM M13x family member.