| 摘要 |
PURPOSE: A circuit for trimming voltage of a semiconductor memory apparatus and a method are provided to reduce the number of a switch and resistor and trim a voltage level as many as the switch and the resistor. CONSTITUTION: In a circuit for trimming voltage of a semiconductor memory apparatus and a method, a voltage range selection unit(100) comprises a first resistor and a second resistor The first and second resistors are connected between a voltage supply node and GND. Voltage range selection units(110,120) selectively output the voltage in both ends of the first or the second resistor. A voltage level selection unit outputs the voltage between both ends of the resistor as a trimming voltage. |
