摘要:
Provided are a temperature sensor using a ring oscillator and temperature detection method using the same. One embodiment of the temperature sensor includes a first pulse generator, a second pulse generator, and a counter. The first pulse generator includes a first ring oscillator and generates a first clock signal having a variable period according to a change in temperature. The second pulse generator includes a second ring oscillator and generates a second clock signal having a fixed period. The counter counts a pulse width of the first clock signal as a function of a pulse width of the second clock signal and generates a temperature code.
摘要:
The present invention comprises a memory device for compensating for a clock skew that generates a centering error, and a method of compensating for the clock skew. To compensate for a clock skew that causes a centering error between an external clock signal and an output data signal, the memory device includes a phase detector (PD) and an up-down counter. The PD detects a phase difference between the output data signal and the external clock signal and generates an up signal or a down signal depending on the detected phase difference. The up-down counter is enabled by a calibration signal that directs a compensation of the skew and generates an offset code in response to the up signal or the down signal. The offset code is fed back to a delay locked loop (DLL) circuit and aligns the middle points of the output data signal with the edges of the external clock signal.
摘要:
A temperature sensing circuit and method are provided. An example temperature sensing circuit includes a temperature sensing unit that outputs a temperature signal indicating whether the temperature in the semiconductor device is higher or lower than a reference temperature in response to a first current control signal or a second current control signal by using a first current level that is increased when the temperature rises and a second current level that is reduced when the temperature rises. The temperature sensing unit also includes a storage unit that stores and outputs the temperature signal, and a controller that changes the first current level or the second current level in response to the temperature signal output from the storage unit and generates the first current control signal or the second current control signal used to control the reference temperature.
摘要:
In an output driver circuit and method, a control circuit generates a control signal in response to a current internal data signal. An output driver generates an output data signal in response to the control signal. A pre-emphasis circuit adjusts a current flowing through a node having the control signal generated thereon in response to a previous internal data signal. The pre-emphasis circuit may also adjust the output signal in response to the previous internal data signal.
摘要:
The output signal from an output driver is compared with first and second reference voltages. A first comparison output signal is generated which exhibits a voltage transition when the output signal reaches the first reference voltage, and a second comparison output signal is generated which exhibits a voltage transition when the output signal reaches the second reference voltage. First and second pulse widths values are then compared. The first pulse width value corresponds to a time delay difference between the voltage transition of the first comparison output signal and the voltage transition of the second comparison output signal, and the second pulse width value corresponds to a target slew rate of the output signal from the output driver. The slew rate of the output signal is decrease when the first pulse width value is smaller than the second pulse width value, and the slew rate of the output signal is increased when the first pulse width value is larger than the second pulse width value.
摘要:
A method and a memory device therefor for reconfiguring a DQ pad organization of the memory device on-the-fly. A DQ organization reconfiguration control unit generates a control signal for reconfiguring the DQ pad organization into a desired mode based on a user command. A DQ organization reconfiguration unit is provided between P DQ pads and memory cell arrays and reconfigures organization P DQ pads on-the-fly in any one among Xi DQ pad modes, where i=1, 2, 4, 8, 16, 32, 64, and 128, based on the control signal. For the reconfiguration of the organization of the DQ pads, a plurality of bus lines for data transfer, being switchable by a control signal, are provided. The bus lines are implemented utilizing at least one of the M3 and M4 metal layers of the memory device.
摘要:
A memory module includes a memory device, a command/address buffering device, and a processing data buffer. The memory device includes a memory cell array, a first set of input/output terminals, each terminal configured to receive first command/address bits, and a second set of input/output terminals, each terminal configured to receive both data bits and second command/address bits. The command/address buffering device is configured to output the first command/address bits to the first set of input/output terminals. The processing data buffer is configured to output the data bits and second command/address bits to the second set of input/output terminals. The memory device is configured such that the first command/address bits, second command/address bits, and data bits are all used to access the memory cell array.
摘要:
A magneto-resistive random access memory (MRAM) including an MRAM cell array having an MRAM cell, and a control and voltage generation unit configured to generate a back bias voltage for the MRAM cell. The control and voltage generation unit including a command decoder configured to generate a decoding signal in response to a command output from a memory controller, and a voltage controller and generator configured to generate the back bias voltage with a magnitude based on the decoding signal and a reset signal output from the memory controller.
摘要:
A non-volatile memory device including a cell array, which includes a plurality of memory cells, and a sense amplification circuit. The sense amplification circuit is configured to receive a data voltage of a memory cell, a first reference voltage and a second reference voltage during a data read operation of the memory cell, generate differential output signals based on a voltage level difference between the data voltage and the first and second reference voltages, and output the differential output signals as data read from the memory cell.
摘要:
A duty cycle correction circuit and a delay locked loop (DLL) including the duty cycle correction circuit, are capable of controlling their operation in order to correctly analyze the cause of generation of a duty cycle error when the duty cycle error is generated in the DLL. The duty cycle correction circuit selectively outputs to a DLL core duty cycle offset information for controlling a duty cycle of an internal clock signal synchronized to an external clock signal under the control of a switching control signal. The DLL corrects the duty cycle of a reference clock signal according to the duty cycle offset information, thereby outputting a reference clock signal having a 50% duty cycle.