PRECHARGER DEVICE FOR DYNAMIC BUS AND ITS PRECHARGING METHOD

PROBLEM TO BE SOLVED: To make it possible to automatically precharge a bus in a succeeding clock phase at the time of detecting a discharge event on the bus by setting up the succeeding phase of a clock signal to the other phase of the 1st or 2nd phase of the clock signal in the case of precharging the bus in the succeeding phase of the clock signal. SOLUTION: The precharger device 10 is provided with a discharge event capture circuit 80 connected so as to monitor a dynamic bus 20 and capable of detecting a discharge event on the bus 20 during the current phase of a clock signal CK, where the current phase of the clock signal CK is the 1st phase CK1 or the 2nd phase CK2 of the clock signal CK and a precharge circuit 90 for precharging the bus 20 in the succeeding phase of the clock signal CK in response to the detection of the discharge event at the time of detecting the discharge event, where the succeeding phase is the other phase of the 1st phase CK1 or the 2nd phase CK2 of the clock signal CK.