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:
A temperature sensor instruction signal generator, which may drive a temperature sensor, and a semiconductor memory device including the same. The temperature sensor instruction signal generator may generate an instruction signal that instruct the operation of the temperature sensor using at least one of a master clock (CLK) signal, a clock enable (CKE) signal, a row address selection (RAS) signal, a column address selection (CAS) signal, a write enable (WE) signal, and a chip selection (CS) signal, wherein the instruction signal may be enabled corresponding to at least one of a self refresh mode, an auto refresh mode, and a long tRAS mode. The semiconductor memory device may include a temperature sensor and the temperature sensor instruction signal generator.
摘要:
A temperature sensor instruction signal generator, which may drive a temperature sensor, and a semiconductor memory device including the same. The temperature sensor instruction signal generator may generate an instruction signal that instruct the operation of the temperature sensor using at least one of a master clock (CLK) signal, a clock enable (CKE) signal, a row address selection (RAS) signal, a column address selection (CAS) signal, a write enable (WE) signal, and a chip selection (CS) signal, wherein the instruction signal may be enabled corresponding to at least one of a self refresh mode, an auto refresh mode, and a long tRAS mode. The semiconductor memory device may include a temperature sensor and the temperature sensor instruction signal generator.
摘要:
A semiconductor memory device includes a mode register, an additional function executer, and an additional function controller. The mode register activates an additional function control signal when a mode register set code indicates that an additional function is to be executed concurrently with a refresh operation. The additional function controller controls the additional function executer to carry out the additional function concurrently with the refresh operation when the additional function control signal is activated.
摘要:
A memory device includes a temperature sensor configured to generate a temperature detection signal responsive to a temperature of the memory device and a self-refresh control circuit configured to control a refresh of the memory device responsive to the temperature detection signal. The device further includes a temperature-detection-error sensing circuit configured to assert a temperature-detection-error signal responsive to an error in the temperature detection signal. The temperature-detection-error sensing circuit may be configured to provide the asserted temperature-detection-error signal at a temperature-detection-error sensing pad configured to be coupled to an external device and/or the device may further include a temperature sensor control circuit configured to control the temperature detection signal responsive to the temperature-detection-error signal. Related operating and testing methods may be provided.
摘要:
A semiconductor memory device includes a mode register, an additional function executer, and an additional function controller. The mode register activates an additional function control signal when a mode register set code indicates that an additional function is to be executed concurrently with a refresh operation. The additional function controller controls the additional function executer to carry out the additional function concurrently with the refresh operation when the additional function control signal is activated.
摘要:
A semiconductor memory device supporting a self refresh operation is disclosed and comprises an address buffer unit and an operation control unit. The address buffer unit may be enabled during the self refresh operation by a first external control signal to generate an internal address signal. The operation control unit controls the start of the self refresh operation in response to the internal address signal.
摘要:
A method may be provided to communicate a plurality of groups of output data bits representing a respective plurality of groups of input data bits over a data bus with each group of output data bits and each group of input data bits have an equal data width. Each of the plurality of groups of input data bits at may be received at a data register. For each group of input data bits received at the data register, if a number of data bits of the group of input data bits having a first logic level is greater than half of the data width, the group of input data bits are inverted, the inverted group of input data bits are transmitted as a respective group of output data bits in parallel over the data bus, and an inversion flag associated with the respective group of output data bits is transmitted. For each group of input data bits received at the data register, if a number of data bits of the group of input data bits having a second logic level different than the first logic level is greater than half of the data width, the group of input data bits is transmitted without inversion as a respective group of output data bits in parallel over the data bus, and a non-inversion flag associated with the respective group of output data bits is transmitted. Related systems are also discussed.
摘要:
A memory device includes a temperature sensor configured to generate a temperature detection signal responsive to a temperature of the memory device and a self-refresh control circuit configured to control a refresh of the memory device responsive to the temperature detection signal. The device further includes a temperature-detection-error sensing circuit configured to assert a temperature-detection-error signal responsive to an error in the temperature detection signal. The temperature-detection-error sensing circuit may be configured to provide the asserted temperature-detection-error signal at a temperature-detection-error sensing pad configured to be coupled to an external device and/or the device may further include a temperature sensor control circuit configured to control the temperature detection signal responsive to the temperature-detection-error signal. Related operating and testing methods may be provided.
摘要:
A semiconductor memory device supporting a self refresh operation is disclosed and comprises an address buffer unit and an operation control unit. The address buffer unit may be enabled during the self refresh operation by a first external control signal to generate an internal address signal. The operation control unit controls the start of the self refresh operation in response to the internal address signal.