| 摘要 |
<p>PURPOSE:To smoothly stop an internal clock and the operation of an internal circuit at arbitrary timing even in the case of an external clock or the internally generated clock without newly providing any external terminal. CONSTITUTION:A stop signal generating circuit 1 is provided to generate a stop signal STOP for turning the levels of signals to an active level when the signals of first and second terminals TX1 and TX2 for oscillator are turned to a low level. The stop signal STOP is supplied to the internal circuit and corresponding to the active level of this stop signal STOP, an oscillation circuit 2 is turned to an inactive state.</p> |
