| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain the power-on reset circuit which can surely generate a reset pulse, even for both cases where a source potential Vdd rises quickly or slowly. SOLUTION: This circuit is provided with a power supply line 10, which is supplied with a 1st source potential Vdd, a 1st node N3, a resistive element 13 which is connected between the 1st node N3 and power supply line 10, and 2nd node N4, a reference node which is supplied with a 2nd source potential, a 1st transistor 11 which has its gate connected to the power supply line 10, its drain connected to the 2nd node N4, and its source connected to the reference node, a 2nd transistor 12 which has its gate connected to the power supply line 10, its drain connected to the 1st node N3, and its source connected to the 2nd node N4, a capacitor 16 which has one of the terminals connected to the 2nd node N4, and a 1st inverter 14 which has its input connected to the 1st node N3.</p> |
