| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the occurrence of a leakage current and, at the same time, to accurately output the state of a fuse by canceling the connection between an output node and a second power source at arbitrary timing when it is detected that the power supply voltage of an external power source is stabilized. SOLUTION: When the lower level of an output OUT2 is inputted to the gate of a PMOS transistor MP2, supplied power Vcc is connected to a node N6 and the potential at the node N6 is maintained at a high level. When a fuse FUSE2 is opened, on the other hand, a node N2 is set to the low level of grounding power Vss and the output OUT2 becomes a high level. Since the high-level output OUT2 is inputted to the gate of an NMOS transistor MN2 in a latch section and turns on the transistor MN2, the node N2 is connected to the grounding power Vss and the input of an inversion element INV2 is maintained at a low level.</p> |
