| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a micro computer which can execute a retry request operation even if an asynchronous peripheral unit is connected to a synchronous circuit. SOLUTION: A micro computer 1 provided with a peripheral unit 4 outputting the retry request signal that re-requests the transmission of data is provided with a strobe signal generation circuit generating a strobe signal with the transmission of data, a flip flop outputting a strobe request signal when the retry request signal is latched at the timing of the strobe signal, and a bus control circuit 31 controlling a bus and transmitting data to the peripheral unit 4 when the strobe request signal is received from the flip flop. The strobe signal generation circuit 32 transmits the strobe signal to the peripheral unit 4 when the strobe request signal is received from the flip flop, resets the flip flop and outputs a reset signal.</p> |
