摘要:
A power-up signal generator uses a deep power down power-up signal, which should be in a standby state in a deep power down entry, for an initialization of other semiconductor elements in a DRAM device that operates after an internal power supply voltage is generated. The generator also uses the power-up signal, which is disabled in the deep power down entry and enabled in a deep power down exit by the internal power supply voltage. The generator may include a power-up detector for generating a power-up detection signal, a deep power down power-up signal generator for generating a deep power down power-up signal, a power-up signal generator for generating a power-up signal and a power-up controller for determining whether or not to enable the power-up signal in the deep power down entry.
摘要:
A internal voltage generator in a semiconductor memory device has a first and second internal voltage generators. The first internal voltage generator outputs a first signal having a first voltage level to internal circuits of the memory device during an active mode of the memory device operation. The second internal voltage generator outputs a second signal having a second voltage level to the internal circuits of the memory device; however, the second signal is interrupted in absence of a predetermined level of a power control signal during the active mode of the memory device operation. The internal voltage control unit monitors the operational signals generated by the memory device and outputs the predetermined level of the power control signal during a plurality of active sections of the active mode of the memory device operation requiring power.
摘要:
Provided is concerned with a voltage regulation circuit and method of regulating the voltage, including a reference voltage generator for generating a reference voltage by dividing a core voltage of a semiconductor memory device, a controller for controlling the reference voltage generator to adjust the reference voltage without handling the core voltage in response to a test signal of a test mode, and a voltage generator for generating a bit-line precharging voltage and/or a cell plate voltage in accordance with the reference voltage.
摘要:
A semiconductor memory test device is capable of reducing the test time and increasing test reliability by applying an effective stress in a burn-in level or a wafer level. The semiconductor memory test device controls a sense amplifier using an additional sense amplifier driving signal when a 2rb pattern stress is applied. Therefore, the semiconductor memory test device applies a uniform stress by applying the constant supply voltage to a cell corresponding to the entire wordlines.
摘要:
An internal power voltage generator for achieving stable operation of a semiconductor device by selectively connecting an external power voltage terminal to a supply line of an internal power voltage in an operation power potential range of the semiconductor device, and generating a predetermined reference voltage in a reference voltage generator in accordance with the internal power voltage after a predetermined potential.
摘要:
The present invention discloses a circuit for detecting a negative word line voltage including a detecting unit for detecting a negative word line voltage in a detection node by using a plurality of loads coupled in series between a power supply terminal and a negative word line voltage terminal, a test signal generating unit for generating a plurality of test signals for detecting variations of the negative word line voltage, and a control unit driven according to the test signals, for controlling a potential of the detection node by adjusting a number of the loads of the detecting unit. The circuit for detecting the negative word line voltage can detect a wanted level of negative word line voltage by using the plurality of test signals without modifying the circuit, to reduce a development period of DRAM semiconductor products.
摘要:
A deep power down control circuit includes a deep power down switch unit to separate an external power voltage line from a selected one of a plurality of internal power voltage lines according to a deep power down signal, a deep power down discharge unit for connecting the plurality of internal power voltage lines to a ground voltage line and to discharge them to a ground voltage level according to the deep power down signal. The deep power down control circuit also includes a deep power down signal generating unit control according to a bank active detect signal and a burst end command, to output the deep power down signal by using a clock enable signal. The deep power down control circuit connects the plurality of internal power voltage lines to the ground voltage line, and thus prevents floating to remove the possibility of inversion of the power voltage or generation of the latch-up. Moreover, the deep power down control circuit prevents leakage current by a micro bridge among the plurality of internal power voltage lines.
摘要:
A semiconductor apparatus with an open bit line structure includes a memory bank including a plurality of memory cell blocks and dummy mats, in which a plurality of bit lines are formed, a bit line sense amplifier configured to be arranged between the plurality of memory cell blocks and the dummy mats, compare a voltage difference between a bit line and a complementary bit line, and amplify the difference, and a dummy word line driving unit configured to selectively activate a dummy word line of the dummy mat in response to a test mode.
摘要:
A semiconductor memory device generates a control signal for regulating a potential of an internal power voltage when an extended mode register is set to adjust an operating speed and a tWR (time to write recovery) of a chip. The semiconductor memory device comprises an extended mode register setting unit and an internal power voltage generating unit. When an internal circuit enters into a specific mode for high-speed operation, the extended mode register setting unit outputs a plurality of internal power control signals to regulate a potential of an internal power voltage of the internal circuit. The internal power voltage generating unit generates an internal power voltage by regulating the potential of the internal power voltage in response to the plurality of internal power control signals.
摘要:
A voltage generator is disclosed which has a charge pump unit including a pump transistor for performing a charge pumping operation by a pump control signal from a ring oscillator and a precharge transistor for performing a charge precharge operation by a precharge control signal from the ring oscillator. The voltage generator additionally has a controller which provides a new back-bias control signal by combining the pump control signal from the ring oscillator with the precharge control signal from the ring oscillator and controls a threshold voltage of the precharge transistor with the back-bias control signal.