摘要:
An output buffer circuit in accordance with an embodiment comprises a plurality of buffer circuits, each of the buffer circuits including a transistor operative to change an output signal of an output terminal in response to a change in an input signal, the output buffer circuit being configured to enable the plurality of buffer circuits to be driven selectively. Each of the plurality of buffer circuits includes a plurality of output transistors having respective current paths formed in parallel to one another between a fixed voltage terminal supplying a certain fixed voltage and an output terminal, and being selectively rendered in an operable state in accordance with a control signal provided from external. The plurality of output transistors included in each of the plurality of buffer circuits are formed having a certain size ratio.
摘要:
According to one embodiment, a semiconductor integrated circuit includes first and second level shift circuits. The first level shifter includes a plurality of transistors and is connected to a power source voltage supply node of a first power source system and to which a first signal of a second power source system and a level inversion signal of the first signal are input. The second level shifter includes a plurality of transistors and is connected to the power source voltage supply node of the first power source system and to which the level inversion signal of the first signal of the second power source system and an output signal of the first level shifter are input. The first and second level shifters have substantially the same circuit configuration and driving abilities of corresponding ones of the transistors in the first and second level shifters are substantially set equal.
摘要:
According to one embodiment, a semiconductor integrated circuit includes first to six transistors and a constant current source circuit. The first and second transistors form a current mirror circuit connected to a first power source node. The third and fourth transistors form a differential pair circuit. The third and fourth transistors receive first and second external signals at their gates, respectively. The constant current source circuit has one end connected to source terminals of the third and fourth transistors, and the other end connected to a second power source node. The fifth and sixth transistors form a current pathway between a common gate node of the first and second transistors and the constant current source circuit. The gate of fifth transistor is connected to a signal output node. The gate of sixth transistor receives a signal of logic opposite to a signal to be obtained at the signal output node.
摘要:
An output buffer circuit in accordance with an embodiment comprises a plurality of buffer circuits, each of the buffer circuits including a transistor operative to change an output signal of an output terminal in response to a change in an input signal, the output buffer circuit being configured to enable the plurality of buffer circuits to be driven selectively. Each of the plurality of buffer circuits includes a plurality of output transistors having respective current paths formed in parallel to one another between a fixed voltage terminal supplying a certain fixed voltage and an output terminal, and being selectively rendered in an operable state in accordance with a control signal provided from external. The plurality of output transistors included in each of the plurality of buffer circuits are formed having a certain size ratio.
摘要:
According to one embodiment, a semiconductor integrated circuit includes first and second level shift circuits. The first level shifter includes a plurality of transistors and is connected to a power source voltage supply node of a first power source system and to which a first signal of a second power source system and a level inversion signal of the first signal are input. The second level shifter includes a plurality of transistors and is connected to the power source voltage supply node of the first power source system and to which the level inversion signal of the first signal of the second power source system and an output signal of the first level shifter are input. The first and second level shifters have substantially the same circuit configuration and driving abilities of corresponding ones of the transistors in the first and second level shifters are substantially set equal.
摘要:
A constant current source circuit includes one end connected to a second node as sources of third and fourth transistors, and the other end connected to a second power supply node that supplies a second voltage different from a first voltage. The clamp circuit is configured to form a current path between the second node and the second power supply node. It adjusts the potential of the second node to a certain potential when a first external input signal is switched from a first state to a second state.
摘要:
An dielectric film is formed above the semiconductor substrate. A first conductive layer is formed in the dielectric film and extending in a first direction. The first conductive layer is connected to a first select transistor. A second conductive layer formed in the dielectric film and extending in the first direction. The second conductive layer is connected to a second select transistor. A semiconductor layer is connected to both the first and second conductive layers and functioning as a channel layer of a memory transistor. A gate-insulating film is formed on the semiconductor layer. The gate-insulating film includes a charge accumulation film as a portion thereof. A third conductive layer is surrounded by the gate-insulating film.
摘要:
A semiconductor integrated circuit apparatus, comprising a data transmitter circuit, and a plurality of data receiver circuits each having a data converter circuit which restores each of bits of identification number data and transfer data from a shift register of the data transmitter circuit to 2-bit complementary data transmitted via first and second transmission lines, a reception control circuit which, when a transfer completion signal has been received via a third transmission line, compares an allocated identification number with the restored identification number data, and a shift register provided in association with the reception control circuit, wherein each reception control circuit feeds transfer data transmitted from the data transmitter circuit corresponding to the identification number data to the associated shift register in accordance with a result of comparison between the identification number data and the allocated identification number.
摘要:
This disclosure concerns a memory comprising a charge trapping film; a gate insulating film; a back gate on the charge trapping film; a front gate on the gate insulating film; and a body region provided between a drain and a source, wherein the memory includes a first storage state for storing data depending on the number of majority carriers in the body region and a second storage state for storing data depending on the amount of charges in the charge trapping film, and the memory is shifted from the first storage state to the second storage state by converting the number of majority carriers in the body region into the amount of charges in the charge trapping film or from the second storage state to the first storage state by converting the amount of charges in the charge trapping film into the number of majority carriers in the body region.
摘要:
A semiconductor memory device includes a sense amplifier for the FBC, a first node and a second node can be disconnected from each other by a first isolation transistor. A third node and a fourth node can be disconnected from each other by a second isolation transistor. The first node is connected to the first memory cell. The third node is connected to the second memory cell. A first amplification transistor and a second amplification transistor are connected between the first node and the third node. A third amplification transistor and a fourth amplification transistor are connected between the second node and the fourth node. This enables to parallelly execute read data transfer to the data lines and precharge to prepare for the next read operation.