| 摘要 |
PURPOSE:To check and confirm easily the stability of operation of a semiconductor memory by separating a power supplying pad for a current source driving circuit for recorded information storage from a power supplying pad for other circuits to change a reference potential and an internal power source potential without any constant relation. CONSTITUTION:The pad for the current source driving circuit for recording information storage comprising transistors 10, 10' and resistors 11, 11' and the like and the pad for the internal power source driving circuit 12 are separated each other, and terminals 14, 15 are provided respectively to the pads separately. Thus, in applying a different power supply voltage respectively to the terminals 15, 14, the reference potential and the internal power source potential are changed as desired without a prescribed relation and the operating stability of the semiconductor memory is checked and confirmed easily. |
