DATA PROCESSOR AND ITS OPERATION CONTROLLING METHOD

摘要

PROBLEM TO BE SOLVED: To accurately and also clearly switch and set a terminal mode in which only the wired input of the connection terminal of a data processor is effective and an RF mode in which only the radio input of a radio antenna is effective. SOLUTION: Even though this data processor sets an RF mode to default in accordance with the input start of driving power, the data processor switches and sets a terminal mode when both a clock signal and a reset signal are inputted to prescribed connection terminals 101 and 102 by cable. Because an analog circuit such as a comparator is not needed to detect the clock and reset signals that are subjected to wired input to the terminals 101 and 102, the switching control of an operation mode is realized only by a digital circuit.