摘要:
In a potential interconnection layer, when viewed from a plane, a plurality of power supply potential regions and ground potential regions are alternately provided, with an interlayer insulation layer lying therebetween. A contact plug penetrating a second insulation layer is provided to electrically connect a source/drain (S/D) region on one side of a selected field effect transistor with a selected power supply potential region. Similarly, a contact plug penetrating the second insulation layer is provided to electrically connect a source/drain (S/D) region on the other side of another selected field effect transistor with a selected ground potential region. By employing this structure, a semiconductor device having a plurality of semiconductor circuits in which a power supply potential and a ground potential can be stabilized regardless of the cross-sectional structure of the semiconductor device is provided.
摘要:
The clock-generating circuit for generating a clock signal, includes a ring oscillator having an odd number of inverters connected in a ring configuration. The ring oscillator is activated to generate a clock signal when an activating signal is at a first level and is de-activated to cease generation of the clock signal when the activating signal is at a second level. A latch circuit is connected to an output node of the ring oscillator, and holds a level of the output node of the ring oscillator in response to transition of the activating signal from the first level to the second level. When the activating signal is lowered from the H level to the L level, the level of the clock signal is latched such that generation of a glitch in the clock signal will be prevented from occurring.
摘要:
A capacitor (C12) is connected between a node (L) in a double boost part and the ground, and the amplitude of a repetitive pulse from the node (L) is made less than twice that of the power-supply voltage through utilization of charge and discharge of the capacitor (C12).
摘要:
A sense signal IVOFF is generated by a power supply level sense circuit with an external power supply potential Ext.Vcc1 as the operating power supply potential to sense the level of an external power supply potential Ext.Vcc2. By suppressing generation of an internal power supply potential or fixing the internal node by the sense signal IVOFF, the through current at the time of power on can be reduced.
摘要:
A voltage generating circuit of the present invention includes a charge pump regulator and a voltage converting circuit. Charge pump regulator receives Ext.Vcc and a ground voltage as inputs and outputs a negative voltage Vbb1. Charge pump regulator receives Int.Vcc and negative voltage Vbb1 as inputs and outputs negative voltage Vbb2(
摘要:
A boosting circuit is provided with a voltage detection circuit, first through fourth oscillators, and first through fourth charge pump circuits. The voltage detection circuit compares each of the first through fourth voltages obtained by dividing a boosted voltage with a reference voltage, and generates first through fourth activation signals. The first through fourth oscillators output pulse signals at first through fourth frequencies, respectively, as first through fourth drive signals. The first through fourth charge pump circuits operate in response to the first through fourth drive signals, respectively, and boost the boosted voltage. Accordingly, it is possible to provide a stable boosted voltage, with suppressing over shoot and under shoot with respect to the boosted voltage as a target.
摘要:
A conductor line is placed at a layer overlying an input protection circuit electrically coupled to a pad such that the conductor line covers at least a part of the input protection circuit. The conductor line having a sufficiently large width disperses and absorbs the heat generated from the input protection circuit. Since the input protection circuit and the conductor line have a region overlapping with each other in the layout of plan view, an area for layout of the input protection circuit on a chip can be reduced effectively, and prevention of a destruction of the protection circuit due to the heat as well as an improvement of a resistance to the surge can be obtained.
摘要:
Disclosed is a semiconductor device having an output driver and a driver replica. The output driver is based on a scalable low-voltage signaling technology and capable of operating on low power and making automatic adjustments of output characteristics in accordance with the magnitude of a reference current. The driver replica, which is a duplicate of the output driver, adjusts the magnitude of the reference current in accordance with the difference between its own output and a reference voltage and outputs the adjusted current to the output driver.
摘要:
A semiconductor integrated circuit device has a negative voltage generation circuit provided at each power supply circuit unit for six memory macros. Therefore, the response with respect to variation in a negative voltage is increased. In a standby mode, a negative voltage supply line for the six memory macros is connected by a switch circuit, and only a negative voltage generation circuit of one power supply circuit unit among six negative voltage generation circuits of the six power supply circuit units is rendered active. Thus, increase in standby current can be prevented.
摘要:
The present invention aims at providing a semiconductor memory device that can be manufactured by a MOS process and can realize a stable operation. A storage transistor has impurity diffusion regions, a channel formation region, a charge accumulation node, a gate oxide film, and a gate electrode. The gate electrode is connected to a gate line and the impurity diffusion region is connected to a source line. The storage transistor creates a state where holes are accumulated in the charge accumulation node and a state where the holes are not accumulated in the charge accumulation node to thereby store data “1” and data “0”, respectively. An access transistor has impurity diffusion regions, a channel formation region, a gate oxide film, and a gate electrode. The impurity diffusion region is connected to a bit line.