| 摘要 |
PURPOSE:To prevent unstable operation of memory, by grounding the memory input terminal, when the power supply of memory drive gate IC is off. CONSTITUTION:When the power supply for an MOS type memory IC drive gate IC4 is off, a junction type FET5 is on, the input terminal 1 of the memory IC is grounded, an input stage MOS type transistor 3 is off. Further, if the power supply of the gate IC4 is on, an FET5 is off for normal operation. |
