The Design Of The Development Board On Freescale MC9S12 MCU

Freescale MC9S12DJ64 MCU is chosen as the object of study in this paper. Freescale MC9S12 series of 16-bit MCU is widely applied because of its quick speed,complete function,low price and power waste,etc.First, the function of Freescale MC9S12DJ64 MCU is introduced in detail and the minimum system is built.And then PWM data capture and display, A/D conversion,AN module and so on are realized in the peripheral circuit module.The software functions deal with C language to write the corresponding control program and use an integrated developing software platform-Code Warrior to compile and debug.In the end, the whole system is discussed and summarized and the direction of the further perfection is put forward.