Semiconductor device generating internal voltage

A semiconductor device comprising:

• an internal voltage generating circuit having an output node, the internal voltage generating circuit supplying an internal power supply voltage to the output node in response to a first signal, wherein the internal voltage generating circuit comprises a differential amplifier and a current supply connected to a common source of the differential amplifier, and wherein the current supply and the differential amplifier each receive the first signal and are configured to be activated in response to the first signal so that the internal power generating circuit generates the internal power supply voltage when the current supply and the differential amplifier are activated;
• and
• a first circuit supplying a first voltage being lower than the internal power supply voltage to the output node of the internal voltage generating circuit in response to the first signal during a first period of time,
• wherein the first circuit includes:
• a first node to which the first voltage is supplied;
• and
• a transistor connected between the output node of the internal voltage generating circuit and the first node, and
• wherein the first circuit further includes a control signal generating circuit generating a control signal which transits from an inactive level to an active level in response to the first signal, holds the active level during the first period of time from a supply of the first signal, and transits from the active level to the inactive level when the first period of time passes from the supply of the first signal, the control signal generating circuit supplying the control signal to a control terminal of the transistor.

A device comprising:

• a first power supply line;
• an internal voltage generating circuit activated in response to a first signal, the internal voltage generating circuit, when activated, supplying an internal power supply voltage to the first power supply line;
• a first circuit supplying a first voltage in response to the first signal during a first period of time, the first voltage being lower than the internal power supply voltage to the first power supply line;
• a first switch connected between the first power supply line and a second power supply line;
• a control circuit controlling the first switch in response to the first signal, the control circuit bringing the first switch into a conductive state when the internal voltage generating circuit starts generating the internal power supply voltage, and keeping the first switch in the conductive state during a first period of time;
• a clock generating circuit operating on the internal power supply voltage to generate a first clock signal;
• a memory cell array;
• and
• an output circuit outputting data that is supplied from the memory cell array in response to the first clock signal,
• wherein the internal voltage generating circuit comprises a differential amplifier that receives the first signal and includes a current mirror, and a second switch connected between a common source of the differential amplifier and the second power supply line that also receives the first signal, and
• wherein the current mirror and the second switch are activated in response to the first signal so that the internal voltage generates the internal power supply voltage.