摘要:
Digital duty cycle correction circuits are provided including a duty cycle detector circuit configured to generate first and second control values associated with a first internal clock signal and a second internal clock signal, respectively. A comparator circuit is also provided and is configured to compare the first control value to the second control value and provide a comparison result. A counter circuit is configured to perform an addition and/or a subtraction operation responsive to the comparison result to provide a digital code. A digital to analog converter is configured to generate third and fourth control values responsive to the digital code. Finally, a duty cycle corrector circuit is configured to receive first and second external clock signals and the first through fourth control values and generate the first and second internal clock signals having a corrected duty cycle. The first and second control values are received over a first path and the third and fourth control values are received over a second path, different from the first path. Related methods of operating duty cycle correction circuits are also provided.
摘要:
A semiconductor memory device having a duty cycle correction circuit and an interpolating circuit interpolating a clock signal in the semiconductor memory device are disclosed. The semiconductor memory device comprises a duty cycle correction circuit, which receives an external clock, corrects the duty cycle of the external clock, and outputs the corrected duty cycle. The duty cycle correction circuit comprises a first delay locked loop that receives the external clock, inverts the external clock, synchronizes the external clock with the inverted external clock, and outputs the synchronized clock; a second delay locked loop that receives the inverted external clock, synchronizes the inverted external clock with the external clock and outputs the synchronized clock; an inverting circuit that inverts the output signal of the first delay locked loop; an interpolation circuit that interpolates the output signal of the inverting circuit with the output signal of the second delay locked loop, and outputs the interpolated signal; and a control circuit that controls the interpolation circuit in response to the clock frequency information of the external clock.
摘要:
Integrated circuit die stacks having a first die mounted upon a substrate, the first die manufactured to be initially identical to a second die with a plurality of through silicon vias (‘TSVs’), the first die personalized by opening switches on the first die, converting the TSVs previously connected through the open switches into pass-through vias (‘PTVs’), each PTV implementing a conductive pathway through the first die with no connection to any circuitry on the first die; and the second die, manufactured to be initially identical to the first die and later personalized by opening switches on the second die, the second die mounted upon the first die so that the PTVs in the first die connect signal lines from the substrate through the first die to TSVs in the second die.
摘要:
A memory system with delay locked loop (DLL) bypass control including a method for accessing memory that includes receiving a memory read command at a memory device. The memory device is configured to operate in a DLL off-mode to bypass a DLL clock as input to generating a read clock. A DLL power-on command is received at the memory device and in response to receiving the DLL power-on command a DLL initialization process is performed at the memory device. The memory read command is serviced at the memory device operating in the DLL off-mode, the servicing overlapping in time with performing the DLL initialization process. The memory device is configured to operate in a DLL on-mode to utilize the DLL clock as input to generating the read clock in response to a specified period of time elapsing. The specified period of time is relative to receiving the DLL power-on command.
摘要:
An advanced memory having improved performance, reduced power and increased reliability. A memory device includes a memory array, a receiver for receiving a command and associated data, error control coding circuitry for performing error control checking on the received command, and data masking circuitry for preventing the associated data from being written to the memory array in response to the error control coding circuitry detecting an error in the received command. Another memory device includes a programmable preamble. Another memory device includes a fast exit self-refresh mode. Another memory device includes auto refresh function that is controlled by the characteristic device. Another memory device includes an auto refresh function that is controlled by a characteristic of the memory device.
摘要:
A memory chip comprises an internal voltage regulator that is selectively enabled/disabled to regulate an external voltage used by the memory chip subunit.
摘要:
A method and circuit for implementing die stacking to distribute a logical function over multiple dies, die identification and sparing in through-silicon-via stacked semiconductor devices, and a design structure on which the subject circuit resides are provided. Each die in the die stack includes predefined functional logic for implementing a respective predefined function. The respective predefined function is executed in each respective die and a respective functional result is provided to an adjacent die in the die stack. Each die in the die stack includes logic for providing die identification. An operational die signature is formed by combining a plurality of selected signals on each die. A die signature is coupled to a next level adjacent die using TSV interconnections where it is combined with that die signature.
摘要:
Provided are a semiconductor integrated circuit including a power supply, a semiconductor system including the semiconductor integrated circuit, and a method of forming the semiconductor integrated circuit. The semiconductor integrated circuit includes: a semiconductor substrate on a surface of which a plurality of electrical circuits and a plurality of power pads are mounted; an insulation layer stacked on the semiconductor substrate; a first conductive layer connected to a first power pad by a first via and stacked on the insulation layer; a second conductive layer connected to a second power pad by a second via, stacked on the insulation layer, and separated from the first insulation layer; and a power generation layer stacked on the first conductive layer and the second conductive layer and that generates voltage.
摘要:
An integrated circuit die stack including a first integrated circuit die mounted upon a substrate, the first die including pass-through vias (‘PTVs’) composed of conductive pathways through the first die with no connection to any circuitry on the first die; and a second integrated circuit die, identical to the first die, rotated with respect to the first die and mounted upon the first die, with the PTVs in the first die connecting signal lines from the substrate through the first die to through silicon vias (TSVs') in the second die composed of conductive pathways through the second die connected to electronic circuitry on the second die; with the TSVs and PTVs disposed upon each identical die so that the positions of the TSVs and PTVs on each identical die are rotationally symmetrical with respect to the TSVs and PTVs on the other identical die.
摘要:
A semiconductor memory device and a memory system including the same are provided. The semiconductor memory device may include a first memory cell array block generating first data, a second memory cell array block generating second data, and first and second error detection code generators. The first error detection code generator may generate a first error detection code and may combine a portion of bits of the first error detection code with a portion of bits of a second error detection code to generate a first final error detection signal. The second error detection code generator may generate the second error detection code and may combine the remaining bits other than the portion of bits of the second error detection code with the remaining bits other than the portion of bits of the first error detection code to generate a second final error detection signal.