MULTI-PORT INTERFACING DEVICE USING ONE ADC AND MULTI-FUNCTION INTERFACING METHOD FOR SEMICONDUCTOR IC

摘要

PURPOSE: A multi-port interfacing device using one ADC(Analog Digital Converter) and a multi-function interfacing method on a semiconductor IC are provided to solve a problem to install the ADC to each port by making one ADC selectively convert analog input signals received from the ports into a digital output signal and outputting/storing it to a corresponding register. CONSTITUTION: The ports(111-114) receive the analog input signals. Multiplexers(121-124) are respectively connected to the ports and are respectively enabled by the first to 'n'th selection signals. One ADC(130) is connected to the multiplexers and converts the analog input signal into the digital out signal.