Apparatus for transferring data from a memory unit to a digitally switched potentiometer using a microcontroller

摘要

A microcontroller comprises a central processing unit with an execution unit for executing instructions. A memory unit is coupled with the central processing unit through a bus. A digitally switched potentiometer is provided and a data transfer unit is coupled with the memory unit and the digitally switched potentiometer, wherein the data transfer unit transfers data between the memory unit and the potentiometer sub-circuit upon execution of a predefined instruction. The data transfer circuit may include a counter receiving a clock signal from a programmable divider. The data transfer circuit may also include a loop register and an incrementer. The memory unit may comprise an electrically erasable programmable read only memory (EEPROM) including flash EEPROM.