| 摘要 |
<p>PURPOSE:To eliminate the phase difference between synchronizing signals of semiconductor devices by providing an external output means of the synchronizing signal, a reinput means of the output of this output means, and a control circuit and obtaining a control signal by the reinputted synchronizing signal. CONSTITUTION:A semiconductor synchronous controller 1 consists of a synchronizing signal generating circuit 2, a control circuit 3m output terminals 4 and 6, and a buffer 5, and a semiconductor device 7 consists of input terminals 8 and 11, a buffer 9, and a control circuit 10. the synchronous controller 1 is provided with an input terminal 12 as the input means for reinput of the synchronizing signal and a buffer 13 having the same phase difference as the buffer 9. A synchronizing signal T1 from the synchronizing signal generating circuit 2 of the synchronous controller 1 is outputted from the output terminal 4 and is inputted to the semiconductor device 7 to become a synchronizing signal T2, and the signal T1 is inputted again to the synchronous controller 1 from the input terminal 12 also to become a synchronizing signal T3 of the control 1 circuit 3. Thus, synchronizing signals T2 and T3 are equal in phase, and both signals are equal in holding time (h).</p> |
