摘要:
Semiconductor devices, a system including said semiconductor devices and methods thereof are provided. An example semiconductor device may receive data scheduled for transmission, scramble an order of bits within the received data, the scrambled order arranged in accordance with a given pseudo-random sequence. The received data may be balanced such that a difference between a first number of the bits within the received data equal to a first logic level and a second number of bits within the received data equal to a second logic level is below a threshold. The balanced and scrambled received data may then be transmitted. The example semiconductor device may perform the scrambling and balancing operations in any order. Likewise, on a receiving end, another semiconductor device may decode the original data by unscrambling and unbalancing the transmitted data. The unscrambling and unbalancing operations may be performed in an order based upon the order in which the transmitted data is scrambled and balanced.
摘要:
A method of forming a conformal dielectric film having Si—N bonds on a semiconductor substrate by plasma enhanced chemical vapor deposition (PECVD) includes: introducing a nitrogen- and hydrogen-containing reactive gas and an additive gas into a reaction space inside which a semiconductor substrate is placed; applying RF power to the reaction space; and introducing a hydrogen-containing silicon precursor in pulses into the reaction space wherein a plasma is excited, thereby forming a conformal dielectric film having Si—N bonds on the substrate.
摘要:
A method of forming an insulation film by alternating multiple times, respectively, a process of adsorbing a precursor onto a substrate and a process of treating the adsorbed surface using reactant gas and a plasma, wherein a plasma is applied in the process of supplying the precursor.
摘要:
Provided are a two-dimensional planar photonic crystal superprism device and a method of manufacturing the same, in which a manufacturing process is simplified using a nanoimprint lithography technique, and thus price-reduction and mass production are facilitated. The two-dimensional planar photonic crystal superprism device includes: a single-mode input waveguide comprising a straight waveguide having a taper structure and a bending waveguide; a superprism formed on an output end side of the single-mode input waveguide and comprising a slab and a photonic crystal superprism; and a single-mode output waveguide comprising a straight waveguide having a taper structure and a bending waveguide, and formed adjacent to the photonic crystal superprism. Using the two-dimensional planar photonic crystal superprism device, it is possible to facilitate manufacturing of nano-photonic integrated circuits, photonic crystal integrated circuits and nano-photonic systems. In addition, a wavelength-selectable photonic crystal superprism device using high dispersion of photonic crystal, which is several hundred times the dispersion of conventional glass prism, can be manufactured using thermal/hot and ultraviolet nanoimprint lithography techniques corresponding to nano-manufacturing technology.
摘要:
A semiconductor memory device and a method of expanding a valid output data window are described. The semiconductor memory device includes a memory cell array and an output circuit. The memory cell array generates read data having a plurality of bits. The output circuit outputs the read data sequentially in response to a clock signal in a normal mode. On the other hand, the output circuit selectively outputs the bits of the read data by latching bits to be tested among bits of the read data, and by electrically disconnecting bits not to be tested among bits of the read data in response to a plurality of switch control signals in a test mode. Therefore a valid data window of an output data may be expanded.
摘要:
Provided is a semiconductor device capable of controlling an on-die-termination (ODT) circuit and an off-chip-driver (OCD) circuit and a control method used by the semiconductor device. The semiconductor device includes a control code generation unit generating a control code in response to a control signal, an addition unit adding an adjustment code to the control code to produce an adjusted control code, and an ODT circuit, wherein an impedance of the ODT circuit is adjusted in response to the adjusted control code. The semiconductor device can adjust the control code more precisely by adding or subtracting the adjustment code to or from the control code. Accordingly, the impedance of an OCD circuit or ODT circuit can be adjusted more precisely.
摘要:
Provided are a circuit and method for sampling a valid command using a valid address window extended for a high-speed operation in a double pumped address scheme memory device. A method for extending the valid address window includes: inputting a valid command signal and a first address signal at the first cycle of a clock signal; inputting a second address signal at the second cycle of the clock signal; generating a decoded command signal and extended first and second internal address signals respectively in response to the command signal and the address signals; and latching and decoding the extended first and second internal address signals in response to the decoded command signal.
摘要:
A semiconductor memory device includes a primary output driver which outputs a data signal through an output terminal; a secondary output driver which is connected to the output terminal and performs a pre-emphasis operation; and a pre-emphasis signal generator which outputs a pre-emphasis signal to enable the secondary output driver The pre-emphasis signal generator includes a auto pulse generator which generates an auto pulse in response to a transition of a control signal; a delay circuit which receives the auto pulse output from the auto pulse generator, delays the auto pulse by a predetermined period, and outputs a pre-emphasis signal; and a delay control unit which applies a delay control signal to the delay circuit and controls a delay amount of the delay circuit.
摘要:
Example embodiments relate to a memory test system having a semiconductor memory device, a coupling circuit and a tester. The semiconductor memory device may include a plurality of first output nodes and a plurality of second output nodes. The first output nodes may be connected to respective first on-die termination circuits that may not be tested, and the second output nodes may be connected to second on-die termination circuits that may be tested. The semiconductor memory device may be configured to generate test signals of the second on-die termination circuits and to provide the test signals to the second output nodes. The coupling circuit may be configured to connect the first output nodes and the second output nodes to communication channels, respectively. The tester may be configured to test a logic state of the test signals of the communication channels.
摘要:
We describe an input buffer having a stabilized operating point and an associated method. An input buffer may include a first differential amplifying unit to generate a first output signal having a first operating point and a second differential amplifying unit to generate a second output signal having a second operating point. An output control circuit varies respective weights of the first and second output signals responsive to an output control signal. The first differential amplifying unit may operate responsive to a reference voltage and an input voltage signal. The second differential amplifying unit may operate responsive to the reference voltage and the input voltage signal. The first operating point may be relatively higher than the second operating point.