摘要:
An organic light emitting diode display, including pixel circuits coupled to respective data lines and scan lines, a data driver configured to supply data signals to the data lines, and a scan driver configured to provide scan signals to the scan lines, wherein the scan driver includes at least one decoder including a plurality of NOR gates, the decoder configured to provide a first plurality of signals, and a plurality of NAND gates coupled to respective scan lines, the NAND gates being configured to perform a NAND operation on the first plurality of signals and to provide scan signals to the scan lines, wherein all transistors in each of the NOR gates and each of the NAND gates are a same type of MOS transistor.
摘要:
A logic basic cell, a logic basic cell arrangement, and a logic device. A logic basic cell is provided for forming a logic combination of two data signals in accordance with a logic function that can be selected by means of a plurality of logic selection elements, having four data signal inputs, to which two data signals and the logically complementary data signals thereof can be applied, and having six logic selection elements between the data signal inputs. At a data signal output, the logic combination of the two data signals in accordance with the logic function selected by means of the logic selection elements can be provided as output signal.
摘要:
A family of logic circuits, called gated diode logic circuits, is disclosed wherein small amplitude signals, typically a fraction of the supply voltage, can be sensed and amplified by applying a small amplitude signal to a gate of a gated diode in a sampling mode and changing a voltage of a source of the gated diode in an evaluation mode. One or more isolation devices may be connected between each small amplitude signal and a gate of the gated diode, wherein the isolation device passes the small amplitude signal to the gate of the gated diode in the sampling mode, and isolates the small amplitude signal from the gate in the evaluation mode for amplification and performing fast logic operations (logic functions). The disclosed gated diode logic circuits overcome the Vt variation problem in FETs by detecting and amplifying the small logic signals utilizing gated diodes that have relatively low Vt variation. The amplified signals may then be processed by conventional logic circuits to perform certain logic functions in a gated diode logic circuit. The Vt variation of the gated diode is relatively small compared to the small logic signal amplitude and can be controlled relatively precisely. Typically, Vt of the gated diode can be set to a fraction of the small logic signal amplitude. Thus, in a gated diode logic circuit, the gated diode circuit can sense and amplify the small logic signals sufficiently to perform the various logic operations in conjunction with conventional logic circuits. The output(s) of the gated diode logic circuit can be of a standard full CMOS voltage swing, or can be scaled down in amplitude and further processed by other gated diode logic circuits.
摘要:
A self-clocked apparatus for eliminating race condition in high speed decoders is provided. In multi-stage decoders, a first stage is generally composed of predecoder blocks while a second stage is generally composed of decoder/driver blocks. Each predecoder block receives several address bits and outputs a high or low level signal depending on the address bit's state. Each decoder/driver block receives the output signal of the corresponding predecoder block, and outputs a signal selecting or not selecting a connected line. The self-clocked apparatus of the invention is cross-connected between adjacent predecoder blocks such that the ith decoder/driver block is controlled by the i+1th predecoder block, and conversely. No external clock signal is used, and no time margins are required. Furthermore, the invention provides a robust electrical design.
摘要:
A low capacitance bus driver circuit includes, in this example, P-channel and N-channel output transistors with input gates connected by means of CMOS pass gates to a common input terminal and having respective P-channel and N-channel transistors connected to the input gates of the output transistors so as to place them in a high impedance state when the CMOS pass gates are disabled. Input capacitance of the bus driver circuit is greatly reduced by elimination of CMOS gate capacitance when the bus driver is enabled. When the bus driver is not enabled, it provides optimal performance of a single gate delay from input to output without the need for series connected output devices or correspondingly higher input capacitance.
摘要:
An input buffer which provides compensation for the RC time delay introduced by a switch matrix of a high density programmable logic device (PLD). The input buffer includes circuitry to provide an input threshold which varies to compensate for the RC delay of the switch matrix to produce an output which transitions when a signal input to the switch matrix transitions through a predetermined value.
摘要:
A microprocessor on-board RAM provides both the usual random access by addressing and a subset of memory cells with their contents continually available on a secondary bus paralleling the data bus. This secondary bus may be used for register indirect addressing without a separate register read when the RAM subset includes the registers for register indirect addressing. The processor also has a two stage output driver for limiting maximum output current and feedback-controlled clock period partitioning.
摘要:
A high speed and low power consumption semiconductor integrated circuit device has a plurality of internal circuits each including circuit elements for performing a desired circuit operation, a plurality of input circuits for receiving external input signals and supplying the signals to the internal circuits and a plurality of output circuits for receiving the output signals from the internal circuits and supplying signals to an external circuit. Each of the internal circuits is primarily constructed by bipolar transistors and MOS transistors, and at least one of each of the input circuits and each of the output circuits is primarily constructed by bipolar transistors.
摘要:
A three state gate having an output capable of assuming an active high, an active low, or a high impedance state is disclosed that eliminates a glitch in the output during the transition from the high impedance state to an active high. An output means includes a first transistor for supplying current to the output and a second transistor for draining current from the output. A phase splitting means determines the conductivity of the first and second transistors. A logic means is responsive to both an input signal and an output enable signal and is coupled to the phase splitting means. The logic means includes a level setting means that insures that the second transistor is not conductive during the transition of the output from the active high to the high impedance state.
摘要:
A transistor circuit includes an input terminal, an output terminal, a first transistor having a collector connected to the output terminal, a second transistor having a collector-emitter passage connected between the collector of the first transistor and the input terminal, a PN junction element such as a diode or a base-emitter junction of another transistor, which is connected between the input terminal and the base of the first transistor, a first resistor connected between the emitter and base of the second transistor, and a second resistor connected between the base and collector of the second transistor.