PROGRAMMABLE NOISE FILTERING DEVICE

摘要

PURPOSE: A programmable noise filtering devide is provided to remove the noise by filtering an input signal having a desired time width only after exterior user delay the input signal by the desired time although the programmable noise filtering devide have been designed. CONSTITUTION: The device has a programmable delay device(10) and a filter(20) and removes the noise of an input signal. The programmable delay device(10) delays an input signal inputted through an input terminal IN by a predetermined time determined in response to a Y bit of selection signal(S) that may be variated by a user and output the delayed result(D) to the filter(20). The selection signal(S) is already stored in a register. The filter(20) filters only the result signal delayed by the programmable delay device(10) and outputs the filtered signal. The result has a pulse width of the predetermined time.