Patents by Inventor Shigezumi Matsui
Shigezumi Matsui has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10726878Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.Type: GrantFiled: June 18, 2018Date of Patent: July 28, 2020Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Takafumi Betsui, Naoto Taoka, Motoo Suwa, Shigezumi Matsui, Norihiko Sugita, Yoshiharu Fukushima
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Patent number: 10573376Abstract: A logic circuit in a system LSI (Large Scale Integrated Circuit) is provided with a power switch so as to cut off the switch at the time of standby, reducing leakage current. At the same time, an SRAM (Static Random Access Memory) circuit of the system LSI controls a substrate bias to reduce leakage current.Type: GrantFiled: February 11, 2019Date of Patent: February 25, 2020Assignee: Renesas Electronics CorporationInventors: Masanao Yamaoka, Koichiro Ishibashi, Shigezumi Matsui, Kenichi Osada
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Publication number: 20190172528Abstract: A logic circuit in a system LSI is provided with a power switch so as to cut off the switch at the time of standby, reducing leakage current. At the same time, an SRAM circuit of the system LSI controls a substrate bias to reduce leakage current.Type: ApplicationFiled: February 11, 2019Publication date: June 6, 2019Inventors: Masanao Yamaoka, Koichiro Ishibashi, Shigezumi Matsui, Kenichi Osada
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Patent number: 10229732Abstract: A logic circuit in a system LSI is provided with a power switch so as to cut off the switch at the time of standby, reducing leakage current. At the same time, an SRAM circuit of the system LSI controls a substrate bias to reduce leakage current.Type: GrantFiled: January 20, 2018Date of Patent: March 12, 2019Assignee: Renesas Electronics CorporationInventors: Masanao Yamaoka, Koichiro Ishibashi, Shigezumi Matsui, Kenichi Osada
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Publication number: 20180301172Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.Type: ApplicationFiled: June 18, 2018Publication date: October 18, 2018Inventors: Takafumi BETSUI, Naoto TAOKA, Motoo SUWA, Shigezumi MATSUI, Norihiko SUGITA, Yoshiharu FUKUSHIMA
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Patent number: 10020028Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.Type: GrantFiled: November 15, 2016Date of Patent: July 10, 2018Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Takafumi Betsui, Naoto Taoka, Motoo Suwa, Shigezumi Matsui, Norihiko Sugita, Yoshiharu Fukushima
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Publication number: 20180144790Abstract: A logic circuit in a system LSI is provided with a power switch so as to cut off the switch at the time of standby, reducing leakage current. At the same time, an SRAM circuit of the system LSI controls a substrate bias to reduce leakage current.Type: ApplicationFiled: January 20, 2018Publication date: May 24, 2018Inventors: Masanao Yamaoka, Koichiro Ishibashi, Shigezumi Matsui, Kenichi Osada
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Patent number: 9928900Abstract: A semiconductor device having static memory cells is designed to reduce leakage current and power consumption. The static memory cells are coupled to word lines and bit lines, and the word lines are coupled to word drivers. A first P channel MOS transistor (MOS power switch) has a gate coupled to receive a first control signal, and a second P channel MOS transistor (MOS power switch) has a gate coupled to receive a second control signal different from the first control signal. Source-drain paths of the first and second P channel MOS transistors (MOS power switches) are coupled to respective voltage supply points for different parts of the semiconductor device, such as voltage supply points for the memory cells and the word drivers, or voltage supply points for a logic circuit and the word drivers.Type: GrantFiled: April 3, 2017Date of Patent: March 27, 2018Assignee: Renesas Electronics CorporationInventors: Masanao Yamaoka, Koichiro Ishibashi, Shigezumi Matsui, Kenichi Osada
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Patent number: 9792959Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.Type: GrantFiled: November 15, 2016Date of Patent: October 17, 2017Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Takafumi Betsui, Naoto Taoka, Motoo Suwa, Shigezumi Matsui, Norihiko Sugita, Yoshiharu Fukushima
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Patent number: 9754659Abstract: A logic circuit in a system LSI is provided with a power switch so as to cut off the switch at the time of standby, reducing leakage current. At the same time, an SRAM circuit of the system LSI controls a substrate bias to reduce leakage current.Type: GrantFiled: November 13, 2015Date of Patent: September 5, 2017Assignee: Renesas Electronics CorporationInventors: Masanao Yamaoka, Koichiro Ishibashi, Shigezumi Matsui, Kenichi Osada
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Publication number: 20170206951Abstract: A logic circuit in a system LSI is provided with a power switch so as to cut off the switch at the time of standby, reducing leakage current. At the same time, an SRAM circuit of the system LSI controls a substrate bias to reduce leakage current.Type: ApplicationFiled: April 3, 2017Publication date: July 20, 2017Inventors: Masanao Yamaoka, Koichiro Ishibashi, Shigezumi Matsui, Kenichi Osada
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Publication number: 20170062020Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.Type: ApplicationFiled: November 15, 2016Publication date: March 2, 2017Inventors: Takafumi BETSUI, Naoto TAOKA, Motoo SUWA, Shigezumi MATSUI, Norihiko SUGITA, Yoshiharu FUKUSHIMA
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Publication number: 20170062021Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.Type: ApplicationFiled: November 15, 2016Publication date: March 2, 2017Inventors: Takafumi BETSUI, Naoto TAOKA, Motoo SUWA, Shigezumi MATSUI, Norihiko SUGITA, Yoshiharu FUKUSHIMA
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Patent number: 9530457Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.Type: GrantFiled: October 21, 2014Date of Patent: December 27, 2016Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Takafumi Betsui, Naoto Taoka, Motoo Suwa, Shigezumi Matsui, Norihiko Sugita, Yoshiharu Fukushima
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Publication number: 20160071573Abstract: A logic circuit in a system LSI is provided with a power switch so as to cut off the switch at the time of standby, reducing leakage current. At the same time, an SRAM circuit of the system LSI controls a substrate bias to reduce leakage current.Type: ApplicationFiled: November 13, 2015Publication date: March 10, 2016Inventors: Masanao Yamaoka, Koichiro Ishibashi, Shigezumi Matsui, Kenichi Osada
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Patent number: 9214221Abstract: A semiconductor device is provided. The semiconductor device includes a logic circuit, an SRAM circuit coupled to a power line, and a switch coupled between the logic circuit and the power line. Before the switch is changed to an off position, a part of information held in the logic circuit is transferred to the SRAM circuit.Type: GrantFiled: April 4, 2014Date of Patent: December 15, 2015Assignee: Renesas Electronics CorporationInventors: Masanao Yamaoka, Koichiro Ishibashi, Shigezumi Matsui, Kenichi Osada
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Publication number: 20150036406Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.Type: ApplicationFiled: October 21, 2014Publication date: February 5, 2015Inventors: Takafumi BETSUI, Naoto TAOKA, Motoo SUWA, Shigezumi MATSUI, Norihiko SUGITA, Yoshiharu FUKUSHIMA
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Patent number: 8898613Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.Type: GrantFiled: February 18, 2014Date of Patent: November 25, 2014Assignee: Renesas Electronics CorporationInventors: Takafumi Betsui, Naoto Taoka, Motoo Suwa, Shigezumi Matsui, Norihiko Sugita, Yoshiharu Fukushima
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Publication number: 20140219010Abstract: A logic circuit in a system LSI is provided with a power switch so as to cut off the switch at the time of standby, reducing leakage current. At the same time, an SRAM circuit of the system LSI controls a substrate bias to reduce leakage current.Type: ApplicationFiled: April 4, 2014Publication date: August 7, 2014Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Masanao Yamaoka, Koichiro Ishibashi, Shigezumi Matsui, Kenichi Osada
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Publication number: 20140160826Abstract: A microcomputer provided on a rectangular semiconductor board has memory interface circuits. The memory interface circuits are separately disposed in such positions as to extend along the peripheries of the semiconductor board on both sides from one corner as a reference position. In this case, limitations to size reduction imposed on the semiconductor board can be reduced compared with a semiconductor board having memory interface circuits only on one side. Respective partial circuits on each of the separated memory interface circuits have equal data units associated with data and data strobe signals. Thus, the microcomputer has simplified line design on a mother board and on a module board.Type: ApplicationFiled: February 18, 2014Publication date: June 12, 2014Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Takafumi BETSUI, Naoto TAOKA, Motoo SUWA, Shigezumi MATSUI, Norihiko SUGITA, Yoshiharu FUKUSHIMA