Patents Assigned to Hitachi ULSI
  • Patent number: 7685455
    Abstract: A semiconductor integrated circuit is provided in which the timing margin for fetching data is prevented from being reduced even in the case where the duty ratio of a clock signal is different from 50%. The semiconductor integrated circuit includes: a clock input terminal for receiving a clock signal; a data input terminal for receiving a data signal; internal clock generating circuits for generating an internal clock signal which is switched at an intermediate timing between the i-th (i: an integer of 1 or larger) switch timing and the (i+1)th switch timing of the clock signal; and a latch circuit for latching the data signal synchronously with the internal clock signal. An internal clock signal which is switched at an intermediate timing between the i-th switch timing and the (i+1)th switch timing of the clock signal is generated, and the data signal is fetched synchronously with the internal clock signal.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: March 23, 2010
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Hiroaki Nambu, Masao Shinozaki, Kazuo Kanetani, Hideto Kazama
  • Patent number: 7678706
    Abstract: The occurrence of a package crack in the back vicinity of a die pad is restrained by making the outward appearance of the die pad of a lead frame smaller than that of a semiconductor chip which is mounted on it, and also the occurrence of a package crack in the main surface vicinity of the semiconductor chip is restrained by forming a layer of organic material with good adhesion property with the resin that constitutes the package body on the final passivation film (final passivation film) that covers the top layer of conductive wirings of the semiconductor chip.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: March 16, 2010
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Yoshinori Miyaki, Hiromichi Suzuki, Kazunari Suzuki, Takafumi Nishita, Fujio Ito, Kunihiro Tsubosaki, Akihiko Kameoka, Kunihiko Nishi
  • Patent number: 7672173
    Abstract: For each memory block, a predecoder for predecoding an applied address signal, an address latch circuit for latching the output signal of the predecoder, and a decode circuit for decoding an output signal of the address latch circuit and performing a memory cell selecting operation in a corresponding memory block are provided. Propagation delay of latch predecode signals can be made smaller and the margin for the internal read timing can be enlarged. In addition, the internal state of the decoder and memory cell selection circuitry are reset to an initial state when a memory cell is selected and the internal data output circuitry is reset to an initial state in accordance with a state of internal data reading. Thus, a non-volatile semiconductor memory device that can decrease address skew and realize an operation with sufficient margin is provided.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: March 2, 2010
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Tsukasa Ooishi, Tomohiro Uchiyama, Shinya Miyazaki
  • Patent number: 7665049
    Abstract: In the manufacturing process of a semiconductor integrated circuit device, a plurality of identification elements having the same arrangement are formed and the relation of magnitude in a physical amount corresponding to variations in the process of the plurality of identification elements is employed as identification information unique to the semiconductor integrated circuit device.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: February 16, 2010
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventor: Masaya Muranaka
  • Patent number: 7643089
    Abstract: A decoder apparatus which includes a de-multiplexer, which is configured to divide motion picture data from a transport stream, a video decoder, which is configured to decode the divided motion picture data, and a first re-formatter on-screen unit, which is configured to display motion picture data and at least one of first and second graphic data on a screen. The first re-formatter on-screen unit converts motion picture data of a first aspect ratio, which is decoded by the video decoder, and first graphics data, which is produced by applying information relating to a caption corresponding to the motion picture data, into a second aspect ratio, when outputting the motion picture data of the first aspect ratio after conversion into the second aspect ratio, without converting the aspect ratio of second graphic data, which is produced by applying information relating to a program guide.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: January 5, 2010
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Masuo Oku, Hironori Komi, Keisuke Inata, Ryosuke Toya, Kenji Katsumata, Shigeru Komatsu, Shinobu Torikoshi, Takaaki Matono, Fumihito Tanaka, Masaaki Hisanaga
  • Patent number: 7620838
    Abstract: A circuit system is provided capable of improving the throughput thereof by eliminating the operational constraint that if the operating frequency of a content addressable memory is lower than the operating frequency of a system LSI, two system clocks should be provided, or the higher frequency should be synchronized with the slower system clock. A clock control circuit (103) for down-converting an internal clock (?1) of a LSI (101) is provided, and a control signal whose frequency is made lower is used to operate a content addressable memory circuit (102).
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: November 17, 2009
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Takashi Koba, Naoyuki Anan, Mikiko Sakai, Seryung Park, Keiichi Higeta
  • Patent number: 7615848
    Abstract: A semiconductor IC device which includes a circuit region and a peripheral region on a main surface of a semiconductor substrate, a first insulating film formed over the main surface, external terminals arranged in the peripheral region and formed over the first insulating film, a conductive guard ring formed over the first insulating film and provided around the external terminals, and second insulating films formed in the internal region and the peripheral region, the second insulating film in the peripheral region is formed over the first insulating film and over the guard ring and is contacting the external terminals, the second insulating films of the circuit region and that of the peripheral region are separately formed and are isolated from each other. Separate second insulating film may be formed over the wirings of one or more of existing wiring levels of the semiconductor device.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: November 10, 2009
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Ken Uchikoshi, Naokatsu Suwanai, Atsushi Tachigami, Katsuhiko Hotta, Masashi Sahara, Kazuhiko Sato
  • Patent number: 7616516
    Abstract: A semiconductor device of the present invention has a memory cell array having plural CMOS static memory cells provided at intersecting portions of plural word lines and plural complementary bit lines. In the memory cell array, a switch MOSFET which is in an OFF state in a first operation mode and in an ON state in a second operation mode different from the first operation mode and first-conductivity-type and second-conductivity-type MOSFETs having a diode configuration are provided in parallel between a first source line to which sources of first-conductivity-type MOSFETs constituting first and second CMOS inverter circuits constituting the plural static memory cells are connected and a first power supply line corresponding to the first source line. A second source line to which sources of the second conductivity-type MOSFETs constituting the first and second CMOS inverter circuits are connected is connected to the second power supply line corresponding thereto.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: November 10, 2009
    Assignee: Hitachi ULSI Systems Co., Ltd
    Inventors: Masayuki Hirayama, Masami Hasegawa, Michitaro Kanamitsu, Yayoi Hayashi, Naoyuki Anan
  • Patent number: 7612604
    Abstract: A body bias control system allows for independent design of a functional module, thereby reducing the burden of designing the module. The body bias control system provides a switch circuit having an area in which the body bias is controlled independently of its outside portion, for controlling the supply of body bias in the vicinity of the area. Preferably three types of switches are provided for switching the body bias to suitable levels for a standby mode, a mode of normal operation and a mode of high-speed operation.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: November 3, 2009
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Masayuki Miyazaki, Yusuke Kanno, Goichi Ono, Toshinobu Shinbo, Yoshihiko Yasu, Kazumasa Yanagisawa, Takashi Kuraishi
  • Publication number: 20090250680
    Abstract: With a high-speed nonvolatile phase change memory, reliability in respect of the number of refresh times is enhanced. In a memory cell forming area of a phase change memory using a MISFET as a transistor for selection of memory cells, a phase change material layer of a memory cell comprising a resistor element, using a phase change material, is formed for common use. As a result, variation in shape and a change in composition of the phase change material, caused by isolation of memory cell elements by etching, are reduced, thereby enhancing reliability of memory cells, in respect of the number of refresh times.
    Type: Application
    Filed: June 18, 2009
    Publication date: October 8, 2009
    Applicants: HITACHI, LTD., HITACHI ULSI SYSTEMS CO., LTD.
    Inventors: Norikatsu Takaura, Hideyuki Matsuoka, Motoyasu Terao, Kenzo Kurotsuchi, Tsuyoshi Yamauchi
  • Patent number: 7596010
    Abstract: There is provided a control circuit (409) for fetching a result of a comparison of a part of bits of entry data with a corresponding bit of comparison data and prohibiting a comparison of residual bits in the entry data with the corresponding bit of the comparison data when the result of the comparison is mismatched, and the comparison of the residual bits in the entry data with the corresponding bit of the comparison data is prohibited. Consequently, the number of signal lines to be activated in one cycle of a comparing operation is decreased. Thus, a reduction in a consumed power can be achieved.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: September 29, 2009
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Masahiko Nishiyama, Keiichi Higeta, Takashi Koba
  • Patent number: 7589423
    Abstract: There is provided a technique for improving the flatness at the surface of members embedded in a plurality of recesses without resulting in an increase in the time required for the manufacturing processes. According to this technique, the dummy patterns can be placed up to the area near the boundary BL between the element forming region DA and dummy region FA by placing the first dummy pattern DP1 of relatively wider area and the second dummy pattern DP2 of relatively small area in the dummy region FA. Thereby, the flatness of the surface of the silicon oxide film embedded within the isolation groove can be improved over the entire part of the dummy region FA. Moreover, an increase of the mask data can be controlled when the first dummy patterns DP1 occupy a relatively wide region among the dummy region FA.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: September 15, 2009
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Kenichi Kuroda, Kozo Watanabe, Hirohiko Yamamoto
  • Patent number: 7581058
    Abstract: A non-volatile storage device (1) has non-volatile memory units (FARY0 to FARY3), buffer units (BMRY0 to BMRY3) and a control unit (CNT), and the control unit can control a first access processing between an outside and the buffer unit and a second access processing between the non-volatile memory unit and the buffer unit upon receipt of directives from the outside separately from each other. The control unit can independently carry out an access control over the non-volatile memory unit and the buffer unit in accordance with the directives sent from the outside, respectively. Therefore, it is possible to set up next write data to the buffer unit simultaneously with the erase operation of the non-volatile memory unit or to output once read storage information to the buffer unit at a high speed as in a cache memory operation in accordance with the directive sent from the outside.
    Type: Grant
    Filed: December 24, 2007
    Date of Patent: August 25, 2009
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Yoshinori Takase, Keiichi Yoshida, Takashi Horii, Atsushi Nozoe, Takayuki Tamura, Tomoyuki Fujisawa, Ken Matsubara
  • Patent number: 7569895
    Abstract: A semiconductor device having a bipolar transistor improved with heat dissipation. A semiconductor device having bipolar transistors formed in a plurality of device forming regions electrically isolated from each other by device isolation trenches traversing the semiconductor layer, in which a device isolation trench for each of unit bipolar transistors connected in parallel is removed and the plurality of unit bipolar transistors connected in series are entirely surrounded with one device isolation trench.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: August 4, 2009
    Assignees: Hitachi ULSI Systems Co., Ltd., Hitachi, Ltd.
    Inventors: Mitsuri Arai, Shinichiro Wada, Hideaki Nonami
  • Patent number: 7569881
    Abstract: The gate tunnel leakage current is increased in the up-to-date process, so that it is necessary to reduce the gate tunnel leakage current in the LSI which is driven by a battery for use in a cellular phone and which needs to be in a standby mode at a low leakage current. In a semiconductor integrated circuit device, the ground source electrode lines of logic and memory circuits are kept at a ground potential in an active mode, and are kept at a voltage higher than the ground potential in an unselected standby mode. The gate tunnel leakage current can be reduced without destroying data.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: August 4, 2009
    Assignees: Renesas Technology Corporation, Hitachi ULSI Systems Co., Ltd.
    Inventors: Kenichi Osada, Koichiro Ishibashi, Yoshikazu Saitoh, Akio Nishida, Masaru Nakamichi, Naoki Kitai
  • Patent number: 7557436
    Abstract: Wiring lines for the supply of a voltage to feed a drive voltage to an integrated circuit formed in a semiconductor chip are disposed so as to cover a main surface of the semiconductor chip, so that, if the wiring lines are removed for the purpose of analyzing information stored in the semiconductor chip, the integrated circuit does not operates and it is impossible to analyze the information. Further, there is provided a processing detector circuit for detecting that the wiring lines have been tampered with. When the processing detector circuit detects a change in the sate of the wiring lines, the integrated circuit is reset. Thus, it is possible to improve the security of information stored on the card.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: July 7, 2009
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Hirotaka Mizuno, Yoshio Masumura, Takeo Kon, Yukio Kawashima
  • Patent number: 7549086
    Abstract: In the initial setting of a memory card 1, the flash check data FD stored in a flash memory 2 is read out, this data FD is compared with the operation check data FD11 stored previously in the ROM, the write check data FD12 stored in the ROM 4a is written, if a fault is not detected, to the flash memory 2, and this data is read again and is compared with the write check data. FD12 of the ROM 4a. When any fault is not detected in comparison of these data, the CPU determines that the flash memory 2 is normal. Moreover, if a fault is detected in the comparison of data, the CPU sets the reset process fault data to a register 5a to set a controller 3 to the sleep mode. When the command CMD is received during this period, data comparison is executed again.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: June 16, 2009
    Assignees: Renesas Technology Corp., Hitachi ULSI Sytems Co., Ltd.
    Inventors: Hidefumi Oodate, Atsushi Shiraishi, Shigeo Kurakata, Kunihiro Katayama, Motoki Kanamori
  • Patent number: 7547971
    Abstract: Circuit elements and wirings constituting a circuit, and first electrodes electrically connected to such a circuit are provided on one main surface of a semiconductor substrate. An organic insulating film is formed on the circuit except for openings on the surfaces of the first electrodes. First and second external connecting electrodes are provided on the organic insulating film. At least one conductive layer for electrically connecting the first and second external connecting electrodes and the first electrodes is placed on the organic insulating film.
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: June 16, 2009
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Masao Shinozaki, Kenji Nishimoto, Takashi Akioka, Yutaka Kohara, Sanae Asari, Shusaku Miyata, Shinji Nakazato
  • Patent number: 7541667
    Abstract: A manufacturing method of a semiconductor device including preparing a lead frame having a die pad, leads arranged around the die pad and a silver plating layer formed over a first portion of each of the leads, mounting a semiconductor chip over a main surface of the die pad with a rear surface of the chip fixed to the main surface of the die pad, electrically connecting electrodes of the chip with the leads through wires, forming a molding resin sealing the die pad, the first portion, the semiconductor chip, and the wires, and forming a lead-free solder plating layer over a second portion of each of the leads exposed from the molding resin. An area of the die pad is smaller than an area of the chip, and a part of the molding resin contacts with the rear surface of the chip exposed from the die pad.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: June 2, 2009
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Yoshinori Miyaki, Hiromichi Suzuki, Kazunari Suzuki, Kunihiko Nishi
  • Patent number: 7516903
    Abstract: A multifunction IC card (MFC) has compatibility with a multimedia card, an SD card, etc. in that connector terminals (#1 through #13) are disposed on a card substrate (1) in two rows in a zigzag fashion, and realizes multifunction facilities in that a memory card unit (3) and an SIM (Subscriber Identity Module) card unit (4) are respectively connected and mounted to predetermined terminals of the connector terminals (#1 through #13). The memory card unit (3) and the SIM card unit (4) are respectively separately provided with areas for storing secret codes for security. Thus, one IC card is capable of implementing multifunction facilities different in security level. Owing to the adoption of a plural-column layout corresponding to a form typified by the zigzag fashion in an array of the connector terminals, a relatively simple structure can be adopted in a card slot.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: April 14, 2009
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Hirotaka Nishizawa, Haruji Ishihara, Atsushi Shiraishi, Yosuke Yukawa