摘要:
A semiconductor memory device and a self-refresh method of the semiconductor memory device. The semiconductor memory device includes: a memory cell array including one or more memory cells; a sense amplifier connected to a sensing line and a complementary sensing line and sensing/amplifying data stored in the one or more memory cells; and a sense amplifier control circuit sequentially supplying a first voltage and a second voltage having different levels to the sense amplifier through the sensing line during a refresh operation.
摘要:
Semiconductor memory devices having hierarchical word line structures are provided in which sub-word line driver circuitry is designed with layout patterns that enable increased integration density and high performance operation.
摘要:
Semiconductor memory devices having hierarchical word line structures are provided. A block of sub-word line driver circuits (SWDB) are disposed between a first block of memory and a second block of memory. A SWDB includes a plurality of sub-wordline driver (SWD) circuits arranged in a plurality of SWD columns each having four SWD circuits extending in a first direction between the first and second blocks of memory. Two adjacent SWD columns include a SWD group for driving a plurality of sub-word lines extending from the SWD group along the first direction into the first and second blocks of memory.
摘要:
A semiconductor memory device includes a fuse box including a plurality of address antifuse circuits, each address antifuse circuit outputting an address fuse signal according to a program state of an antifuse included in the corresponding address antifuse circuit, an address comparator including a plurality of address comparison signal generators, each address comparison signal generator combining a first test signal for determining an initial defect of the antifuse and a corresponding bit of an externally applied address signal to generate a test address, and comparing the test address with the address fuse signal to generate an address comparison signal, and a redundant enable signal generator for enabling a redundancy enable signal in response to a plurality of address comparison signals.
摘要:
A semiconductor memory device having internal circuits responsive to temperature data, in order to compensate an output characteristic change of the internal circuits and reduce power consumption depending on temperature change, and method thereof are disclosed. The semiconductor memory device may include a temperature sensing circuit and an internal circuit. The temperature sensing circuit may generate and output temperature data in response to ambient temperature of the semiconductor memory device. The internal circuit may adjust an output level of an output signal in response to the temperature data from the temperature sensing circuit.
摘要:
In this circuit, an external voltage source is supplied or down converted in response to a normal operating mode to provide the internal voltage source of a first level to the internal circuit. The external voltage source is converted to a voltage of a second level, lower than the first level, in response to a low consumption power mode having a complementary relation with the normal mode.
摘要:
A semiconductor memory device having internal circuits responsive to temperature data, in order to compensate an output characteristic change of the internal circuits and reduce power consumption depending on temperature change, and method thereof are disclosed. The semiconductor memory device may include a temperature sensing circuit and an internal circuit. The temperature sensing circuit may generate and output temperature data in response to ambient temperature of the semiconductor memory device. The internal circuit may adjust an output level of an output signal in response to the temperature data from the temperature sensing circuit.
摘要:
An external high/low voltage compatible semiconductor memory device includes an internal voltage pad, an internal voltage generation circuit, and an internal voltage control signal generation circuit. The internal voltage pad connects a low external voltage with an internal voltage, and the internal voltage generation circuit generates an internal voltage in response to an internal voltage control signal and a high external voltage. The internal voltage control signal generation circuit generates an internal voltage control signal according to an high or low external voltage. Thus, a database of the semiconductor memory device can be managed without classifying the database into databases for the high voltage and databases for the low voltage because of the internal voltage control signal. In addition, the internal voltage level is stable because charges provided to the internal voltage are regulated according to a voltage level of the external voltage.
摘要:
Semiconductor devices and methods of sampling data therefrom are provided in which data is sampled from a memory cell array based on a relative position of a memory cell array section that contains the data. A sense amplifier generates an output signal in response to an address of one or more cells in a memory cell array. A control circuit generates a sample control signal in response to at least a portion of the address (e.g., one or more high order bits of the address) of the one or more cells in the memory cell array. A data sampling circuit then samples the output signal of the sense amplifier in response to the sample control signal. The portion of the memory cell array address used to drive the control circuit may logically divide the memory cell array into two or more sections. The control circuit may adjust the timing of the sample control signal in accordance with the proximity of a memory cell array section to the sense amplifier.
摘要:
A circuit for generating an internal source voltage signal responsive to an external source voltage signal in a semiconductor memory device prevents malfunction and extends the lifetime of the device by clamping the internal source signal if the device is in a normal operating mode when the external source signal is in a stress operating range. When the device is placed in a test mode, the circuit allows the internal source signal to increase in proportion to the level of the external source signal when the external source signal is in a stress operating range. The circuit includes in internal source voltage generator, which always clamps the internal source signal when the external source signal is in a normal operating range, and a pull-up unit which is activated in response to a control signal. The control signal is enabled when the device is placed in a test mode by combining external timing signals.