Standby Power Patents (Class 365/229)
  • Patent number: 8077500
    Abstract: Memory elements are provided that exhibit immunity to soft error upset events when subjected to high-energy atomic particle strikes. The memory elements may each have ten transistors. To overcome difficulties in writing data into the memory elements, signal strengths for one or more of the signals provided to the array may be adjusted. There may be two positive power supply voltages that are used in powering each memory element. One of the power supply voltages may be temporarily lowered relative to the other power supply voltage to enhance write margin during data loading operations. Other signal strengths that may be adjusted in this way include other power supply signals, data signal levels, address and clear signal magnitudes, and ground signal strengths. Adjustable power supply circuitry and data read-write control circuitry may be used in making these signal strength adjustments.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: December 13, 2011
    Assignee: Altera Corporation
    Inventors: Yanzhong Xu, Jeffrey T. Watt
  • Patent number: 8072834
    Abstract: A line driver circuit can include an integrated circuit substrate of a first conductivity type having at least a first and a second well of a second conductivity type formed therein. The second well can be coupled to a first power supply node. A first transistor can be formed in the first well having a source coupled to a first input signal node, a drain coupled to a conductive line, and a gate coupled to a second input signal node. A second transistor can have a source coupled to a second power supply node, a drain coupled to the conductive line, and a gate coupled to the second input signal node. A third transistor can be formed in the second well and have a source coupled to the first power supply node, a drain coupled to the first well, and a gate coupled to receive a mode signal.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: December 6, 2011
    Inventors: Arun Khamesra, Badrinarayanan Kothandaraman
  • Patent number: 8068376
    Abstract: Systems design and methods are provided for maintaining the memory array stability while reducing power consumption in the form of leakage current in a memory array. One embodiment discloses a memory array system, which comprises a plurality of memory cells, a monitor cell array, a controller, and voltage regulator circuits. The controller receives information from the monitor cell array, determines the state of stability, and adjusts the voltage regulators accordingly to ensure the memory array stability and minimizes leakage.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: November 29, 2011
    Inventor: Hiep Van Tran
  • Patent number: 8068378
    Abstract: A system, method and apparatus for clock and power fault detection for a memory module is provided. In one embodiment, a system is provided. The system includes a voltage detection circuit and a clock detection circuit. The system further includes a controller coupled to the voltage detection circuit and the clock detection circuit. The system also includes a memory control state machine coupled to the controller. The system includes volatile memory coupled to the memory control state machine. The system further includes a battery and battery regulation circuitry coupled to the controller and the memory control state machine. The battery, battery regulation circuitry, volatile memory, memory control state machine, controller, clock detection circuit and voltage detection circuit are all collectively included in a unitary memory module.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: November 29, 2011
    Assignee: Smart Modular Technologies, Inc.
    Inventors: Mike H. Amidi, Satyadev Kolli
  • Patent number: 8068377
    Abstract: A semiconductor memory device capable of reducing off-current in a standby mode is provided. The semiconductor memory device includes an enable signal generating unit configured to receive a plurality of address decoding signals and generate a first enable signal to select a first cell block and a second enable signal to select a second cell block, and an internal voltage generating unit for generating an internal voltage by controlling a supply of a first voltage in accordance with the first or second enable signals.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: November 29, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Sang Il Park
  • Patent number: 8054120
    Abstract: An integrated circuit, comprises a wakeup terminal; a supply voltage terminal configured to receive a supply voltage; and a power control circuit. The power control circuit comprises an enable circuit coupled to the wakeup terminal and configured to generate a voltage monitoring enable signal as a response to a wakeup signal received at the wakeup terminal, and a voltage monitoring circuit for generating a supply voltage level indication signal. The voltage monitoring circuit is coupled to the supply voltage terminal and comprises an operation switch controlled by the voltage monitoring enable signal. The voltage monitoring circuit is configured to determine if the supply voltage is above a threshold voltage and set the supply voltage level indication signal accordingly. The integrated circuit further comprises processing circuitry, with the supply voltage level indication signal controlling the switching between a normal operation state and a standby state of the processing circuitry.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: November 8, 2011
    Assignee: STMicroelectronics Design & Application GmbH
    Inventors: Manfred Huber, Peter Heinrich
  • Patent number: 8049556
    Abstract: A mobile telephone is provided that includes a plurality of circuit blocks and adapted to cut off the supply of power source voltage to any one of the circuit blocks. The mobile telephone also includes an interblock interface circuit provided on a signal path between an elected circuit block and a branch point at which the signal path branches into different branch paths so as to connect to other circuit blocks. The interblock interface circuit includes a signal gate for preventing signal transmission from the elected circuit block to the other circuit blocks, and includes a storage unit for storing a signal right before the power cut-off.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: November 1, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Tadashi Hoshi, Kenji Hirose, Hideaki Abe, Junichi Nishimoto, Midori Nagayama
  • Patent number: 8040721
    Abstract: The present invention provides methods and apparatus for adjusting voltages of bit and word lines to create short programming pulses to program a memory cell. The invention may include setting a first line connected to a memory cell to a first voltage from a first line standby voltage, charging a second line connected to the memory cell to a predetermined voltage from a second line standby voltage, switching the first line from the first voltage to a second voltage, and switching the first line from the second voltage to the first voltage. The voltage difference between the first voltage and the predetermined voltage is such that a safe voltage results that does not program the memory cell. A voltage difference between the second voltage and the predetermined voltage is such that a programming voltage operative to program the memory cell results. The switching operations together may create a first pulse.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: October 18, 2011
    Assignee: SanDisk 3D LLC
    Inventors: Tyler Thorp, Roy E. Scheuerlein
  • Patent number: 8031548
    Abstract: A voltage stabilization circuit includes a control signal generating unit to generate a control signal that is enabled when a supply voltage is unstable and a voltage level maintaining unit for selectively controlling total capacitance of a plurality of capacitors to stabilize the supply voltage in response to the control signal.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: October 4, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Byung Deuk Jeon
  • Patent number: 8027217
    Abstract: A supply voltage distribution system for distributing a supply voltage through a semiconductor device, the supply voltage distribution system comprising: a first supply voltage distribution line arrangement and a second supply voltage distribution line arrangement, said first supply voltage distribution line arrangement and said second supply voltage distribution line arrangement being adapted to receive from outside the semiconductor device a semiconductor device supply voltage and to distribute a supply voltage to respective first and second portions of the semiconductor device; a voltage-to-voltage conversion circuit connected to the first supply voltage distribution line arrangement, wherein the voltage-to-voltage conversion circuit is adapted to either transfer onto the first supply voltage distribution line arrangement the semiconductor device supply voltage received from outside the semiconductor device, or to put on the first supply voltage distribution line a converted supply voltage having a value d
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: September 27, 2011
    Inventors: Donghyun Seo, Jaeyong Cha
  • Patent number: 8026757
    Abstract: A current mirror circuit is provided with a first current mirror including first and second mirror transistors sharing a common control terminal; the first mirror transistor has a conduction terminal for receiving, during a first operating condition, a first reference current, and the second mirror transistor has a respective conduction terminal for providing, during the first operating condition, a mirrored current based on the first reference current. The current mirror circuit is provided with a switching stage operable to connect the control terminal to the conduction terminal of the first mirror transistor during the first operating condition, and to disconnect the control terminal from the same conduction terminal of the first mirror transistor, and either letting it substantially float or connecting it to a reference voltage, during a second operating condition, in particular a condition of stand-by.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: September 27, 2011
    Assignee: STMicroelectronics S.r.l.
    Inventors: Ferdinando Bedeschi, Claudio Resta
  • Patent number: 8018788
    Abstract: A static memory device includes a bit cell connected to an internal voltage line, and a power supply control circuit connected between the internal voltage line and a power supply voltage, wherein the power supply control circuit is configured to supply the power supply voltage level to the internal voltage line, and the power supply control circuit is configured to perform a write assist function that includes floating the internal voltage line during a write operation on the bit cell, the internal voltage line being floated in response to a signal of a mode control signal group.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: September 13, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Hoon Jung, Soung-Hoon Sim, Jung-Min Choi
  • Patent number: 8015426
    Abstract: A system and method for providing voltage power gating. The system includes a device for providing voltage power gating. The device includes logic circuitry, a mechanism for receiving a control signal associated with the logic circuitry and a selector. The control signal indicates an active state or an idle state of the logic circuitry. The selector enables a power source to the logic circuitry in response to the control signal indicating the active state. The selector also disables the power source to the logic circuitry in response to the control signal indicating the idle state. Thus, the power source is dynamically eliminated from the logic circuitry on the device when it is in the idle state.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: September 6, 2011
    Assignee: International Business Machines Corporation
    Inventors: Dustin J. VanStee, Thomas J. Griffin, Leonard M. Greenberg
  • Patent number: 8014224
    Abstract: There is provided a semiconductor device supplied with internal power generated by an internal power generation circuit to perform a stable operation and, also, suppress power consumption. A control circuit, a row/column decoder and a sense amplifier are driven by an internal buck voltage. On the other hand, a data path with high power consumption is driven by an external power supply voltage. A level conversion circuit receives an address signal or a command signal having a voltage level of the external power supply voltage, converts the voltage level to the internal buck voltage, and outputs a resultant signal to the control circuit. A level conversion circuit receives a control signal having a voltage level of the internal buck voltage from the control circuit, converts the voltage level to the external power supply voltage, and outputs a resultant signal to the data path.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: September 6, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Kenji Yoshinaga, Fukashi Morishita
  • Patent number: 8014223
    Abstract: A semiconductor device including a plurality of semiconductor elements, a substrate on which the plurality of semiconductor elements are mounted, the substrate also having a plurality of terminals for connecting to external equipment, a fuse mounted on the outside of a mounting area of the plurality of semiconductor elements and mounted on a surface of the substrate near a power supply terminal among the plurality of terminals, and the power supply terminal and the plurality of semiconductor elements are connected via the fuse.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: September 6, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Atsushi Kaneko, Yasuo Okada
  • Patent number: 8009502
    Abstract: Power-backup capabilities are provided by implementing a variety of different methods, systems and devices. According to one such implementation, an energy storage circuit is powered using a variable voltage controlled to limit the current draw from a power supply, to charge the energy storage circuit for providing backup power to a solid state drive (SSD) type of data storage arrangement. Certain applications involve controlling the power draw from the power supply, in response to feedback and/or power drawn from other circuits, as may be applicable to an initial startup of the energy storage circuit and/or the initial startup of a larger system in which the energy storage circuit is employed.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: August 30, 2011
    Assignee: Seagate Technology LLC
    Inventors: Darren Edward Johnston, Dean Clark Wilson
  • Patent number: 8004920
    Abstract: Some embodiments include a voltage generator to generate a voltage to apply to a line used to access a memory cell of a memory device in which the voltage is applied to the line when the memory cell is not being accessed, and a power controller to cause the voltage to change during a time interval after a refresh operation of the memory device. Other embodiments including additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: August 23, 2011
    Assignee: Micron Technology, Inc.
    Inventors: Yutaka Ito, Masayoshi Nomura, Keiichiro Abe
  • Patent number: 8004924
    Abstract: A circuit includes a first negative feed back loop coupled to a virtual Vvdd power rail and a true Vdd power rail. A second negative feed back loop is coupled to the virtual Vvss power rail and a true Vss power rail. The virtual rail to virtual rail voltage difference is regulated at the highest threshold voltage between pull-up and pull-down transistors of a memory cell.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: August 23, 2011
    Assignee: Atmel Corporation
    Inventors: Sylvain Leomant, Jimmy Fort, Arnaud Turier, Laurent Vachez, Lotfi B. Ammar
  • Patent number: 8004922
    Abstract: A power island for a system-on-a-chip (SoC) includes a first segment, a second segment, and a supply line. The first segment includes a hardware device and operates the hardware device at first power characteristics indicative of at least a first voltage. The second segment includes scalable logic and operates the scalable logic at second power characteristics indicative of at least a second voltage. The second power characteristics of the scalable logic are different from the first power characteristics of the hardware device. The supply line receives an external supply signal (VDD) and directs the external supply signal to both the first segment and the second segment. The second segment changes at least one power characteristic of the external supply signal to operate the scalable logic according to the second power characteristics.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: August 23, 2011
    Assignee: NXP B.V.
    Inventors: David R. Evoy, Peter Klapporth, Jose J. Pineda De Gyvez
  • Patent number: 8001408
    Abstract: A dual voltage switching circuit includes a first resistor and two transistors. Each transistor has a first terminal, a second terminal, and a third terminal. The first terminals are connected to a control terminal of a computer. The second terminals are connected to a standby power supply of the computer. The third terminals are connected to a power-on terminal of the computer via the first resistor. When the first terminals receive a low level signal from the control terminal, the first and second transistors are on, and the power-on terminal receives a voltage form the standby power supply via the first resistor.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: August 16, 2011
    Assignees: Hong Fu Jin Precision (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Ke-You Hu
  • Patent number: 7995398
    Abstract: Non-differential sense amplifier circuitry for reading out Non-Volatile Memories (NVMs) and its operating methods are disclosed. Such non-differential amplifier circuitry requires exceptionally low power and achieves moderate sensing speed, as compared to a conventional sensing scheme.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: August 9, 2011
    Assignee: FlashSilicon, Inc.
    Inventor: Lee Wang
  • Patent number: 7996695
    Abstract: A circuit for reducing sleep state current leakage is described. The circuit includes a hardware unit selected from at least one of a latch, a flip-flop, a comparator, a multiplexer, or an adder. The hardware unit includes a first node. The hardware unit further includes a sleep enabled combinational logic coupled to the first node, wherein a value of the first node is preserved during a sleep state.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: August 9, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Martin Saint-Laurent, Jentsung Lin
  • Patent number: 7995417
    Abstract: The present invention provides a semiconductor memory circuit capable of reducing current consumption at non-operation in a system equipped with a plurality of chips that share the use of a power supply, address signals and a data bus. The semiconductor memory circuit has an internal circuit which is capable of selectively performing the supply and stop of an operating voltage via switch means and includes a memory array. An input circuit, which receives a predetermined control signal therein, controls the supply and stop of the operating voltage by the switch means to reduce a DC current and a leak current when no memory operation is done, whereby low power consumption can be realized.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: August 9, 2011
    Assignees: Renesas Electronics Corporation, Hitachi Device Engineering Co., Ltd.
    Inventors: Takesada Akiba, Shigeld Ueda, Toshikazu Tachibana, Masashi Horiguchi
  • Patent number: 7990797
    Abstract: A device includes: non-volatile memory; a controller in communication with the non-volatile memory, wherein the controller is programmed to move data from a volatile memory to the non-volatile memory upon a loss of power of a primary power source of the volatile memory; and a backup power supply providing temporary power to the controller and the volatile memory upon the loss of power of the primary power source, including: a capacitor bank with an output terminal; a connection to a voltage source that charges the capacitor bank to a normal operating voltage; and a state-of-health monitor that is programmed to generate a failure signal based on a voltage at the output terminal of the capacitor bank.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: August 2, 2011
    Assignee: STEC, Inc.
    Inventors: Mark Moshayedi, Douglas Finke
  • Patent number: 7986568
    Abstract: Systems and methods, including computer software for performing operations enable interleaving of charging operations in a charging pump. A first charge pump is charged to a predetermined level, and a first operation is performed using a charge stored in the first charge pump after it reaches the predetermined level. A second charge pump is charged during a time that overlaps with performing the first operation. A second operation is performed using a charge stored in the second charge pump as a result of charging the second charge pump.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: July 26, 2011
    Assignee: Apple Inc.
    Inventor: Michael J. Cornwell
  • Patent number: 7983098
    Abstract: An apparatus and method for improving the performance of an electronic device is disclosed. An idle voltage state is introduced by an adaptive voltage generator when providing or removing a high voltage signal from a line or a node in a circuit. The idle state reduces the undesirable effects of switching disturbances caused by sudden voltage changes in a line or node.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: July 19, 2011
    Assignee: Atmel Corporation
    Inventors: Marco Passerini, Stefano Sivero, Andrea Sacco, Monica Marziani
  • Patent number: 7983107
    Abstract: A memory device for use with a primary power source and a backup power source, includes: volatile memory; an interface for connecting to a backup power source; a plurality of ports, each of which is for receiving a different corresponding non-volatile memory chip; a plurality of interfaces, each of which is for communicating through a different corresponding one of the plurality of ports with any non-volatile memory connected to that port; a controller that is programmed to activate a selectable set of the plurality of interfaces depending on which ports are to receive non-volatile memory chips, wherein said controller is also programmed to react to a loss of power from the primary power source by moving data from the volatile memory through the selected interfaces to whatever non-volatile memory is connected to the selectable set of interfaces.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: July 19, 2011
    Assignee: STEC, Inc.
    Inventors: Mark Moshayedi, Douglas Finke
  • Patent number: 7978560
    Abstract: A static memory cell, composed of cross-coupled MOS transistors having a relatively high threshold voltage, is equipped with MOS transistors for controlling the power supply line voltage of the memory cell. To permit the voltage difference between two data storage nodes in the inactivated memory cell to exceed the voltage difference between the two nodes when write data is applied from a data line pair DL and /DL to the two nodes in the activated memory cell, the power supply line voltage control transistors are turned on to apply a high voltage VCH to the power supply lines after the word line voltage is turned off. The data holding voltage in the memory cell can be activated to a high voltage independent of the data line voltage, and the data holding voltage can be dynamically set so that read and write operations can be performed at high speed with low power consumption.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: July 12, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Kiyoo Itoh, Koichiro Ishibashi
  • Patent number: 7974144
    Abstract: A system and are described as to adjusting voltages in a memory device, while the device is in sleep mode, to prevent or minimize voltage or current leakage of the device.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: July 5, 2011
    Assignee: Texas Instruments Incorporated
    Inventor: Michael Patrick Clinton
  • Patent number: 7973556
    Abstract: A method of operating an integrated circuit having a circuit block configurable by a configuration memory is disclosed. The method includes determining whether to operate the circuit block in a normal operation mode or a low power mode. The configuration memory is loaded with normal operation mode configuration data for the circuit block if the normal operation mode is determined. If the low power mode is determined, the configuration memory is loaded with low power mode configuration data for the circuit block.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: July 5, 2011
    Assignee: Xilinx, Inc.
    Inventors: Juan J. Noguera Serra, Tim Tuan
  • Patent number: 7969777
    Abstract: A new memory cell can contain only a single thyristor. There is no need to include an access transistor in the cell. In one embodiment, the thyristor is a thin capacitively coupled thyristor. The new memory cell can be connected to word, bit, and control lines in several ways to form different memory arrays. Timing and voltage levels of word, bit and control lines are disclosed.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: June 28, 2011
    Assignee: T-RAM Semiconductor, Inc.
    Inventors: Hyun-Jin Cho, Farid Nemati
  • Patent number: 7961548
    Abstract: A semiconductor memory device includes a cell matrix having a number of cells, a multiplicity of column decoders for selectively activating the cells in response to code signals containing column address information for the cells, wherein each column decoder contains a pre-driving unit for providing a state output signal transiting between a power supply voltage and a source voltage in response to the code signals and a driving unit for outputting a column selection signal to activate a corresponding cell in response to the state output signal, wherein the pre-driving unit and the driving unit include at least one PMOS transistor and at least one NMOS transistor receiving a pumping voltage and a back-bias voltage, respectively, through their bulk, the pumping voltage having a voltage level higher than that of the power supply voltage and the back-bias voltage having a voltage level lower than that of a ground voltage.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: June 14, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Ihl-Ho Lee
  • Patent number: 7961542
    Abstract: Embodiments for selecting regions of memory are described. For example, in one embodiment a memory device having an array of memory cells includes an array selection block. The array selection block receives an input signal indicative of a region in the array of memory cells. The array selection block generates a selection signal to map the region to at least one physical location in the array of memory cells, based on the detection of the number of defects in that location.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: June 14, 2011
    Inventor: Scott Smith
  • Patent number: 7961546
    Abstract: Memory power management systems and methods are provided. One embodiment of the present invention includes a memory power management system. The system comprises a first low dropout (LDO) regulator that provides an active operating voltage that is derived from a first supply voltage to power a memory array during an active mode. The system further comprises a second LDO regulator that provides a minimum memory retention voltage that is derived from a second supply voltage to power the memory array in a standby mode, wherein the second supply voltage also powers at least one peripheral circuit for reading from and/or writing to the memory array.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: June 14, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Hugh T. Mair, Robert L. Pitts, Alice Wang, Sumanth K. Gururjarao, Ramaprasath Vilangudipitchai, Gordon Gammie, Uming Ko
  • Patent number: 7957176
    Abstract: A semiconductor memory device includes a first inverter ad a second inverter, a first power supply control circuit, and a second power supply control circuit. The first and second inverters constitute a memory cell and each have an input terminal and an output terminal connected crosswise to an output terminal and an input terminal, respectively, of the other. The first power supply control circuit supplies a first voltage to the first inverter. The second power supply control circuit supplies a second voltage to the second inverter. The first and second power supply control circuits control the first and second voltages, respectively, supplied to the first and second inverters in a selected memory cell for a writing operation in accordance with write data.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: June 7, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Nobuaki Otsuka
  • Publication number: 20110116321
    Abstract: When an operational mode is shifted to a standby mode, a first transistor is brought into a conduction state by a control signal, and a word line is thereby clamped to a ground voltage. Further, a second transistor is brought into a non-conduction state, and supply of an internal power supply voltage to a word line driver is shut off. Subsequently, the supply of the internal power supply voltage is halted for saving electrical power. When the operational mode returns to a normal mode, the supply of the internal power supply voltage is started, and subsequently, the first transistor is brought into the non-conduction state by the control signal, and the second transistor is thereby brought into the conduction state.
    Type: Application
    Filed: January 18, 2011
    Publication date: May 19, 2011
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventors: Takeshi AGARI, Hirotoshi Sato, Kiyoyasu Akai, Minoru Senda, Hiroaki Nakai
  • Patent number: 7933161
    Abstract: A memory capable of preventing a memory cell from disappearance of data resulting from accumulated disturbances is obtained. This memory comprises a nonvolatile memory cell and a refresh portion for rewriting data in the memory cell. The refresh portion reads data from and rewrites data in the memory cell in a power-down state.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: April 26, 2011
    Assignee: Patrenella Capital Ltd., LLC
    Inventors: Hideaki Miyamoto, Shigeharu Matsushita
  • Patent number: 7933155
    Abstract: A memory device comprises a memory array, at least one buffer coupled to the memory array, and test circuitry coupled to the buffer. The buffer comprises switching circuitry configured to multiplex first and second inputs of the buffer to a given output of the buffer based at least in part on a control signal generated by the test circuitry. The control signal is generated as a function of both a test signal indicative of a test mode of operation of the memory device and a power-down signal indicative of a power-down mode of operation of the memory device. The buffer further comprises current reduction circuitry responsive to the control signal for reducing an amount of current consumed by the buffer in the power-down mode of operation. The buffer may comprise an input data buffer or an address buffer of the memory device.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: April 26, 2011
    Assignee: Agere Systems Inc.
    Inventors: Dennis E. Dudeck, Donald Albert Evans, Hai Quang Pham, Wayne E. Werner, Ronald James Wozniak
  • Patent number: 7924650
    Abstract: A memory device that includes multiple blocks of static random access memory (SRAM), which each have a standby mode and an active operating mode, is described. During the active operating mode, a selection circuit couples a higher voltage from a first power-signal line and a power-supply circuit to a given block of SRAM, and during the standby mode the selection circuit couples a lower voltage from a second power-signal line to the given block of SRAM. Note that a regulator circuit regulates the lower voltage on the second power-signal line by selectively opening or closing a first switch between the first power-signal line and the second power-signal line. Furthermore, a recycling circuit selectively opens a second switch between the first switch and the first power-signal line when the block of SRAM transitions from the active operating mode to the standby mode, thereby transferring charge from the block of SRAM to other blocks of SRAM.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: April 12, 2011
    Assignee: Oracle America, Inc.
    Inventors: Hoyeol Cho, Heechoul Park, Jungyong Lee
  • Patent number: 7924645
    Abstract: A refreshing method suitable for a memory device is provided which includes the following steps. A sleep mode is set and the memory device cannot be read and programmed in the sleep mode. A first and a second memory cell arrays are sequentially auto-refreshed, and the steps for auto-refreshing each of the first and the second memory cell arrays individually include: during an equalization period, switching the potential of a sense line pair, a first bit line pair and a second bit line pair to a reference voltage wherein the sense line pair is not coupled to the second bit line pair, and during a refreshing period, adjusting the potential of the first and the second bit line pairs according to a refresh sequence of the first and the second memory cell arrays, thereby coupling the sense line pair to one of the first and the second bit line pairs.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: April 12, 2011
    Assignee: Winbond Electronics Corp.
    Inventors: Cheng-Sheng Lee, Cheng-Fung Wu
  • Publication number: 20110069575
    Abstract: An electronic device includes a memory storage device, a storing unit, and a voltage increasing unit. The storing unit is used for receiving the supply voltage to store energy and releasing energy to generate an standby voltage when the power supply stops providing the supply voltage. The voltage increasing unit is used for receiving the standby voltage, increasing the standby voltage, and providing the increased standby voltage to the memory storage device for preventing data loss in the memory storage device. A related method for preventing data loss in a memory storage device and an electronic device assembly are also provided.
    Type: Application
    Filed: June 22, 2010
    Publication date: March 24, 2011
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: TE-HUA LEE, CHE CHEN
  • Patent number: 7913193
    Abstract: An integrated circuit and a design structure are disclosed. An integrated circuit may comprise: a data retaining device; a charge storing device coupled to the data retaining device such that a use of the data retaining device triggers a charging of the charge storing device by a charge source; and means for measuring a potential of the charge storing device, the measuring means being communicatively coupled to a calculating mean which determines a relative amount of usage of the data retaining device based on the measured potential.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: March 22, 2011
    Assignee: International Business Machines Corporation
    Inventors: Kerry Bernstein, Kenneth J. Goodnow, Clarence R. Ogilvie, Sebastian T. Ventrone, Keith R. Williams
  • Publication number: 20110058440
    Abstract: An apparatus, system, and method are disclosed for power loss management in a nonvolatile data storage device. A monitor module initiates a power loss mode in the nonvolatile data storage device in response to a primary power source failing to supply electric power above a predefined threshold to the nonvolatile data storage device. A secondary power source supplies electric power to the nonvolatile data storage device for at least a power hold-up time during the power loss mode. A power loss module adjusts execution of in-process operations on the nonvolatile data storage device during the power loss mode so that essential in-process operations execute within the power hold-up time.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 10, 2011
    Applicant: FUSION-IO, INC.
    Inventors: Lance L. Smith, Jeremy Fillingim, David Flynn, Bill Inskeep, John Strasser, Jonathan Thatcher
  • Patent number: 7903496
    Abstract: A semiconductor device reduces unnecessary operating current while an internal row/column address is generated. The semiconductor memory device includes an address input unit for transferring an address signal input from an external device; an internal column address generating unit for receiving the transferred address signal to generate an internal column address; an internal row address generating unit for receiving the transferred address signal to generate an internal row address; and an internal address control unit for controlling the internal row address generating unit in response to an activated states of banks in the semiconductor memory device.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: March 8, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Sang-Hee Lee
  • Patent number: 7903487
    Abstract: An internal voltage generator when activated, generates an internal voltage to be supplied to an internal circuit. Operating the internal voltage generator consumes a predetermined amount of the power. In response to a control signal from the exterior, an entry circuit inactivates the internal voltage generator. When the internal voltage generator is inactivated, the internal voltage is not generated, thereby reducing the power consumption. By the control signal from the exterior, therefore, a chip can easily enter a low power consumption mode. The internal voltage generator is exemplified by a booster for generating the boost voltage of a word line connected with memory cells, a substrate voltage generator for generating a substrate voltage, or a precharging voltage generator for generating the precharging voltage of bit lines to be connected with the memory cells.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: March 8, 2011
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Shinya Fujioka, Tomohiro Kawakubo, Koichi Nishimura, Kotoku Sato
  • Patent number: 7903495
    Abstract: Embodiments of methods, apparatuses, and systems that enable power conservation in data buffering components are disclosed. Other embodiments may also be disclosed.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: March 8, 2011
    Assignee: Intel Corporation
    Inventor: Nikos Kaburlasos
  • Patent number: 7903494
    Abstract: A system and method for implementing a low-power local-area wireless network for use with a mobile terminal satellite modem. This low-power local-area wireless network enables sensors on an asset to wirelessly transmit sensor data to a mobile terminal affixed on the asset. The mobile terminal reports the sensor data along with asset position information to a centralized facility via a communications satellite.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: March 8, 2011
    Assignee: SkyBitz, Inc.
    Inventor: Rich Battista
  • Patent number: 7899434
    Abstract: A communication device includes a voice data and RF integrated circuit (IC) that includes a memory module that stores a least one application as a plurality of operational instructions, the at least one application having a plurality of power modes that each correspond to one of a plurality of use characteristics. A processing module executes the plurality of operational instructions and determines a selected one of the plurality of power modes based on current use characteristics of the at least one application, and the generates a power mode signal based on the selected one of the plurality of power modes. An off-chip power management circuit receives the power mode signal and that generates a plurality of power supply signals to the voice data and RF IC based on the power mode signal.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: March 1, 2011
    Assignee: Broadcom Corporation
    Inventors: Yossi Cohen, Nelson R. Sollenberger, Vafa James Rakshani, Ahmadreza (Reza) Rofougaran, Maryam Rofougaran, Claude G. Hayek, Frederic Christian Marc Hayem
  • Publication number: 20110044118
    Abstract: A semiconductor device that may include temperature sensing circuits is disclosed. The temperature sensing circuits may be used to control various parameters, such as internal regulated supply voltages, internal refresh frequency, or a word line low voltage. In this way, operating specifications of a semiconductor device at worst case temperatures may be met without compromising performance at normal operating temperatures. Each temperature sensing circuit may include a selectable temperature threshold value as well as a selectable temperature hysteresis value. In this way, temperature performance characteristics may be finely tuned. Furthermore, a method of testing the temperature sensing circuits is disclosed in which a current value may be monitored and temperature threshold values and temperature hysteresis values may be thereby determined.
    Type: Application
    Filed: December 10, 2009
    Publication date: February 24, 2011
    Inventor: Darryl G. Walker
  • Patent number: 7894285
    Abstract: Memory devices and methods are provided for reducing simultaneous switching output noise and power supply noise during burst data write and refresh operations. An embodiment of a memory device according to the present invention includes a first power domain coupled to some of the components of the memory device and a second power domain coupled to different components of the memory device. One or more distributed power domain coupling circuits may be coupled to the first and second power domains. The power domain coupling circuit includes a controller configured to generate an enable signal responsive to control signals, data signals, or any combination thereof. The power domain coupling circuit also includes coupling circuitry coupled to the first and second power domains and coupled to the controller. The coupling circuitry is configured to couple the first and second power domains together responsive to the enable signal.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: February 22, 2011
    Assignee: Micron Technology, Inc.
    Inventors: Yantao Ma, Todd Merritt