Abstract: A temperature sensor circuit comprises a first reference voltage generator configured to generate a first signal that linearly varies with temperature and a first reference voltage signal that maintains a certain level irrespective of temperature, a second reference voltage generator configured to generate a second reference voltage signal by using the first reference voltage signal, and a controller configured to compare the first signal with the second reference voltage signal and control a voltage level of the first signal according to a comparison result.

Abstract: A counter control signal generator comprises a first pulse signal generator configured to generate a first pulse signal including a pulse generated when a self-refresh period is terminated, a second pulse signal generator configured to generate a second pulse signal including a pulse generated in sync with a cyclic signal generated during a refresh period, and a signal generator configured to generate a counter control signal counting an address of a memory cell, corresponding to a memory cell on which a refresh operation is conducted, in response to the first and second pulse signals.

Abstract: A clock control circuit comprises a control signal generating unit configured to generate a control signal disabled in a predetermined state while in an active mode, and a clock transferring unit configured to transfer an external clock in response to the control signal.

Abstract: An input circuit comprises a buffer enable signal generating circuit for generating a buffer enable signal having an predetermined enable period in response to an external command, and a buffer circuit for buffering and outputting the external command and an external address signal in response to the buffer enable signal.

Abstract: A periodic signal generating circuit which is dependent upon temperature for establishing a temperature independent refresh frequency is presented The periodic signal generating circuit includes a reference voltage generating unit and a periodic signal generating unit. The reference voltage generating unit produces a reference voltage which exhibits a variable voltage level in response to temperature. The periodic signal generating unit produces a periodic signal in response to a set voltage to determine the reference voltage and an oscillation period, wherein a transition timing of the set voltage is controlled by the reference voltage. As a result the periodic signal has a relatively constant period which can be produced regardless of the temperature variation.

Abstract: A gel-type bird aversion composition consists of, on the basis of weight, 30 to 90% of a thickening agent, 0.01 to 4% of an ultraviolet ray absorbent, 0.1 to 20% of methyl anthranilate, 0.1 to 10% of cinnamon essential oil, 0.1 to 20% of mint essential oil; 5 to 40% by weight of mineral oil or grease; and 1 to 10% by weight of emulsifier.

Abstract: A temperature sensor circuit comprises a first reference voltage generator configured to generate a first signal that linearly varies with temperature and a first reference voltage signal that maintains a certain level irrespective of temperature, a second reference voltage generator configured to generate a second reference voltage signal by using the first reference voltage signal, and a controller configured to compare the first signal with the second reference voltage signal and control a voltage level of the first signal according to a comparison result.

Abstract: A clock control circuit comprises a control signal generating unit configured to generate a control signal disabled in a predetermined state while in an active mode, and a clock transferring unit configured to transfer an external clock in response to the control signal.

Abstract: A precharge voltage supply circuit and a semiconductor memory device using the same are described. The precharge voltage supply circuit includes a first voltage supplier configured to reduce a precharge voltage and supply the reduced precharge voltage in response to a power down mode signal that is activated in a power down mode, a second voltage supplier configured to supply a power voltage in a predetermined section from a point of time when exiting the power down mode, and a third voltage supplier configured to supply the precharge voltage after a lapse of the predetermined section.

Abstract: A precharge voltage supply circuit and a semiconductor memory device using the same are described. The precharge voltage supply circuit includes a first voltage supplier configured to reduce a precharge voltage and supply the reduced precharge voltage in response to a power down mode signal that is activated in a power down mode, a second voltage supplier configured to supply a power voltage in a predetermined section from a point of time when exiting the power down mode, and a third voltage supplier configured to supply the precharge voltage after a lapse of the predetermined section.

Abstract: A semiconductor memory device includes a temperature sensor. The temperature sensor includes a temperature data signal generator and a temperature signal extractor. The temperature data signal generator generates temperature data signals for respective temperate ranges of internal temperature. The temperature signal extractor receives the temperature data signals and a pulse signal with a predetermined cycle, extracts the temperature data signal that is activated for at least two cycles of the pulse signal, and generates a temperature signal corresponding to the extracted temperature data signal.

Abstract: A temperature sensor circuit includes a first reference voltage generator configured to generate a first reference voltage signal by using a first signal linearly varying with temperature, a second reference voltage generator configured to generate a second reference voltage signal with a predetermined logic level by using the first reference voltage signal, and a controller configured to compare the first signal with the second reference voltage signal and control a voltage level of the first signal according to the comparison result.

Abstract: A tRAS adjusting circuit extends an active operation in a self-refresh operation. The tRAS adjusting circuit includes: a self-refresh sensing unit for receiving a self-refresh signal and a refresh signal and generating a sensing signal; a first extension unit for extending an enable interval of an active operation pulse; a second extension unit for extending an enable interval of an output signal of the first extension unit; a transfer unit for transferring either the output signal of the first extension unit or an output signal of the second extension unit as a tRAS signal according to an enable state of the sensing signal; and an active signal output unit for receiving the active operation pulse and tRAS signal and outputting an enable state of the active operation pulse as an active signal until the tRAS signal is disabled.

Abstract: A tRAS adjusting circuit extends an active operation in a self-refresh operation. The tRAS adjusting circuit includes: a self-refresh sensing unit for receiving a self-refresh signal and a refresh signal and generating a sensing signal; a first extension unit for extending an enable interval of an active operation pulse; a second extension unit for extending an enable interval of an output signal of the first extension unit; a transfer unit for transferring either the output signal of the first extension unit or an output signal of the second extension unit as a tRAS signal according to an enable state of the sensing signal; and an active signal output unit for receiving the active operation pulse and tRAS signal and outputting an enable state of the active operation pulse as an active signal until the tRAS signal is disabled.