Patents Assigned to RENESAS
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Patent number: 10338924Abstract: An apparatus and method for dynamically controlling functional aspects of an MCU. In one embodiment an MCU includes a central processing unit (CPU), a memory for storing instructions executable by the CPU, and a T/C channel coupled to receive control values generated by CPU and M event signals, wherein M is an integer greater than 1. The T/C channel is configured to select one or more of the M event signals based on the one or more of the control values. The T/C channel is configured to generate a control signal as a function of the selected one or more of the M event signals. A function of the T/C channel can be controlled by the control signal.Type: GrantFiled: July 24, 2017Date of Patent: July 2, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Jon Matthew Brabender
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Patent number: 10340905Abstract: Related-art back bias generation circuits cause a problem where a long time is required for transition between an operating state and a standby state because driving power is lowered to reduce the power consumption in the standby state. A back bias generation circuit outputs a predetermined voltage. The predetermined voltage is the back bias voltage of a substrate in a standby mode. A bias control circuit stores an electrical charge while a circuit block is in an operating mode, supplies the stored electrical charge to the substrate of a MOSFET included in the circuit block when the circuit block transitions from the operating mode to the standby mode, and subsequently supplies the output of the back bias generation circuit to the substrate of the MOSFET.Type: GrantFiled: July 29, 2017Date of Patent: July 2, 2019Assignee: Renesas Electronics CorporationInventor: Akira Tanabe
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Patent number: 10340944Abstract: An object of the invention is to speed up processing of adding floating-point numbers. A floating-point adder includes: a first register configured to store a first fixed-point number having a predetermined number of digits corresponding to a result of accumulation of a plurality of floating-point numbers; a first conversion unit configured to convert an input first floating-point number into a second fixed-point number having the predetermined number of digits; a second register configured to store the second fixed-point number; an adder configured to add the second fixed-point number stored in the second register and the first fixed-point number stored in the first register, and store a result of the addition in the first register as the first fixed-point number; and a second conversion unit configured to convert the first fixed-point number into a second floating-point number, and output the second floating-point number.Type: GrantFiled: February 2, 2016Date of Patent: July 2, 2019Assignee: Renesas Electronics CorporationInventor: Katsunori Tanaka
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Patent number: 10340825Abstract: An initial position determination process and a rotation driving process are both attained. A motor includes a rotor having a permanent magnet with a plurality of magnetic poles and a stator having coils with a plurality of phases. A voltage signal generation part generates a voltage signal corresponding to an electric current flowing through each of the coils with the phases of the stator. A filter part includes a first filter and a second filter. The voltage signal is inputted to a comparator through the filter part. A control part controls such that the first filter whose filter constant is larger is selected when performing the initial position determination process of the rotor and the second filter whose filter constant is smaller is selected when performing the rotation driving process.Type: GrantFiled: February 21, 2018Date of Patent: July 2, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Takayuki Aoki, Takahito Ishino
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Patent number: 10339335Abstract: A semiconductor device includes a first storage unit including twin cells which are electrically rewritable and complementarily store 1-bit data based on a difference in a threshold voltage, a second storage unit including a memory cell which is electrically rewritable, data stored in the memory cell being erased when data in the twin cells is erased, at least one scrambler subjecting first data to a scramble processing by using scramble data to generate second data, a first write circuit which writes the second data into the twin cells in the first storage unit, a second write circuit which writes the scramble data into the memory cell in the second storage unit, and at least one descrambler subjecting the second data read from the first storage unit to a descramble processing by using the scramble data read from the second storage unit.Type: GrantFiled: August 20, 2018Date of Patent: July 2, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Seiji Sawada
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Patent number: 10340147Abstract: A downsized semiconductor device having an excellent reverse characteristic, and a method of manufacturing the semiconductor device is sought to improve. The semiconductor device comprises a semiconductor body having a polygonal contour. An active area is formed in the semiconductor body. An EQR electrode is formed so as to surround the active area and to have curved portions of the EQR electrode along the corners of the semiconductor body. An interlayer insulating film is formed to cover the active area and the EQR electrode. The EQR electrode is embedded in the interlayer insulating film around the active area. EQR contacts are in contact with the curved portions of the EQR electrode and the semiconductor body outside the curved portions, and have at least side walls covered with the interlayer insulating film.Type: GrantFiled: January 14, 2016Date of Patent: July 2, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Kouichi Murakawa
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Patent number: 10340344Abstract: A silicon carbide semiconductor device includes a silicon carbide substrate, a gate insulating film, and a gate electrode. The gate insulating film is provided as being in contact with the first main surface of the silicon carbide substrate. The gate electrode is provided on the gate insulating film such that the gate insulating film lies between the gate electrode and the silicon carbide substrate. In a first stress test in which a gate voltage of ?5 V is applied to the gate electrode for 100 hours at a temperature of 175° C., an absolute value of a difference between a first threshold voltage and a second threshold voltage is not more than 0.5 V, with a threshold voltage before the first stress test being defined as the first threshold voltage and a threshold voltage after the first stress test being defined as the second threshold voltage.Type: GrantFiled: January 12, 2018Date of Patent: July 2, 2019Assignees: Sumitomo Electric Industries, Ltd., Renesas Electronics CorporationInventors: Ryosuke Kubota, Shunsuke Yamada, Taku Horii, Takeyoshi Masuda, Daisuke Hamajima, So Tanaka, Shinji Kimura, Masayuki Kobayashi
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Patent number: 10340379Abstract: A semiconductor device according to an embodiment is provided with a plurality of active barrier sections each of which is enclosed by a plurality of element isolation sections each of which is configured of a closed pattern. Namely, the plurality of active barrier sections are electrically isolated from each other.Type: GrantFiled: December 14, 2016Date of Patent: July 2, 2019Assignee: Renesas Electronics CorporationInventor: Keiichi Furuya
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Publication number: 20190199556Abstract: A receiving device performs, in an equalization processing circuit that performs an equalizing process for a received signal sequence and outputs a sequence to be demodulated, a first transmission-path estimating process of generating a first compensation coefficient indicating a propagation coefficient of a transmission path of a received signal, based on a preamble sequence, a second transmission-path estimating process of generating a second compensation coefficient from a received header-replica sequence generated by performing demodulation and modulation for a header sequence included in a first equalizer-compensated output sequence in which distortion has been compensated based on the first compensation coefficient, a third transmission-path estimating process of generating a third compensation coefficient by synthesizing the first and second compensation coefficients with each other, and a propagation-path compensating process of performing a distortion compensating process for a payload sequence incluType: ApplicationFiled: November 16, 2018Publication date: June 27, 2019Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Takahiro SATO, Naohiro MATSUI
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Patent number: 10334262Abstract: The present invention is directed to reduce deterioration in parallel processing capability. In a moving-picture decoding processing apparatus, information of a first plurality of frames and a second plurality of frames is supplied from a decoding control unit to first and second decoding processing units. For decoding the information from an intermediate point to an end point of a second preceding frame by the second decoding unit in a third period, use of a result of the process of the first decoding processing unit in the third period is inhibited, and use of a result of the process of a first preceding frame by the first decoding processing unit in a second period is permitted by an end signal.Type: GrantFiled: October 20, 2014Date of Patent: June 25, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Katsushige Matsubara, Seiji Mochizuki, Toshiyuki Kaya, Tetsuya Shibayama
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Patent number: 10333509Abstract: The present invention provides a drive device and a power supply system capable of driving a power transistor with low power while reflecting variations in manufacture process and external environments. A trigger detection circuit monitors a voltage between terminals or a current between terminals in a switching period of a power transistor and detects that the voltage between terminals or the current between terminals reaches a predetermined reference value. A current switching circuit selects a register outputting a current value to a variable current driver circuit from a plurality of registers and switches the register to be selected using a detection result of the trigger detection circuit as a trigger in the switching period, thereby making the drive current of the variable current driver circuit shift.Type: GrantFiled: June 19, 2017Date of Patent: June 25, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Shunichi Kaeriyama
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Patent number: 10332901Abstract: A semiconductor device including a memory cell featuring a first gate insulating film over a semiconductor substrate, a control gate electrode over the first gate insulating film, a second gate insulating film over the substrate and a side wall of the control gate electrode, a memory gate electrode over the second gate insulating film arranged adjacent with the control gate electrode through the second gate insulating film, first and second semiconductor regions in the substrate positioned on a control gate electrode side and a memory gate side, respectively, the second gate insulating film featuring a first film over the substrate, a charge storage film over the first film and a third film over the second film, the first film having a first portion between the substrate and memory gate electrode and a thickness greater than that of a second portion between the control gate electrode and the memory gate electrode.Type: GrantFiled: July 3, 2018Date of Patent: June 25, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Shoji Shukuri
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Patent number: 10332993Abstract: A semiconductor device with a simplified structure including an energization control element and reverse coupling protection element, and a manufacturing method therefor. Its semiconductor substrate has deep and shallow trenches in its first surface. A first n-type impurity region lies in its second surface in contact with the deep trench bottom. A p-type impurity region includes: a p-type base region to make a pn junction with the first n-type region and in contact with the shallow trench bottom; and a back gate region joined to the p-type base region, lying in the first surface. A second n-type impurity region makes a pn junction with the p-type impurity region, lying in the first surface in contact with the shallow trench side face. An n+ source region makes a pn junction with the p-type region, lying in the first surface in contact with the side faces of deep and shallow trenches.Type: GrantFiled: March 5, 2018Date of Patent: June 25, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventor: Kazuhisa Mori
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Patent number: 10331204Abstract: A semiconductor device which makes it possible to reduce a wasteful standby time at power-on is provided. In this semiconductor device, a reset of an internal circuit is canceled as described below. When a data signal stored in a storage section is at “0,” the reset is canceled by bringing an internal reset signal to the “H” level when a relatively short time has passed after the rising edge of a power on reset signal. When the data signal is at “1,” the reset is canceled by bringing the internal reset signal to the “H” level when a relatively long time has passed after the rising edge of the power on reset signal. Therefore, a wasteful standby time at power-on can be reduced by writing the data signal logically equivalent to the rise time of supply voltage to the storage section.Type: GrantFiled: March 8, 2018Date of Patent: June 25, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Yoshinori Tokioka, Soichi Kobayashi, Akira Oizumi
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Patent number: 10332795Abstract: It is to provide a manufacturing method of a semiconductor device including the following steps of: preparing a semiconductor substrate having a silicon nitride film on the rear surface; forming an interlayer insulating film having a via hole on the main surface of the semiconductor substrate; and forming a via-fill selectively within the via hole. The method further includes the steps of: performing the wafer rear surface cleaning to expose the surface of the silicon nitride film formed on the rear surface of the semiconductor substrate; and thereafter, forming a photoresist film made of chemical amplification type resist on the interlayer insulating film and the via-fill over the main surface of the semiconductor substrate, in which the semiconductor substrate is stored in an atmosphere with the ammonium ion concentration of 1000 ?g/m3 and less.Type: GrantFiled: August 7, 2017Date of Patent: June 25, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Kiyoshi Maeshima, Kotaro Horikoshi, Katsuhiko Hotta, Toshiyuki Takahashi, Hironori Ochi, Kenichi Shoji
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Publication number: 20190188938Abstract: A dual mode, passcode storage, wireless secure lock is disclosed. In one embodiment, a key is provided that includes a key coil, a first key data processing device (DPD), a second key DPD, and a key radio transceiver. The first key DPD is configured to receive a first authentication code (AC) from a lock via the key coil. The first key DPD is configured to compare the first AC with data in memory of the key DPD. The first key DPD is configured to activate the second key DPD in response to response to determining the first AC compares equally to data in memory of the first key DPD. The second key DPD is configured to transmit a second AC to the lock via the key radio transceiver after the second key DPD is activated.Type: ApplicationFiled: December 14, 2018Publication date: June 20, 2019Applicant: Renesas Electronics America Inc.Inventors: Robert E. GRANGE, Shigeru MAETA, Eugene G. BONEV
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Publication number: 20190189737Abstract: A terrace insulating film (SL) to be overridden by a gate electrode (G) of an nLDMOS device is configured by LOCOS, and a device isolation portion (SS) is configured by STI. Furthermore, on an outermost periphery of an active region where a plurality of nLDMOS devices are formed, a guard ring having the same potential as that of a drain region (D) is provided. And, via this guard ring, the device isolation portion (SS) is formed in a periphery of the active region, thereby not connecting but isolating the terrace insulating film (SL) and the device isolation portion (SS) from each other.Type: ApplicationFiled: February 14, 2019Publication date: June 20, 2019Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Makoto KOSHIMIZU, Hideki NIWAYAMA, Kazuyuki UMEZU, Hiroki SOEDA, Atsushi TACHIGAMI, Takeshi IIJIMA
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Patent number: 10324123Abstract: A semiconductor device includes a logic circuit, a memory circuit having a plurality of first static memory cells formed by a transistor on the semiconductor substrate, a monitor circuit having a second static memory cell formed by a transistor on the semiconductor substrate, the monitor circuit being configured to apply stress to the second static memory cell during a period in which the semiconductor device operates so that a state of the second static memory cell can be notified, and a bus coupled with the logic circuit, the memory circuit and the monitor circuit, wherein a size of the transistor of one cell of the first static memory cells is substantively the same as that of the transistor of the second static memory cell.Type: GrantFiled: November 21, 2017Date of Patent: June 18, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Hisao Kobashi, Yasuhiko Fukushima, Mikio Asai
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Patent number: 10325841Abstract: According to an embodiment of the present invention, there is provided a semiconductor device having a first semiconductor component and a second semiconductor component which are mounted on a wiring substrate. The first semiconductor component has a first terminal for transmitting a first signal between the first semiconductor component and the outside and a second terminal for transmitting a second signal between the first semiconductor component and the second semiconductor component. In addition, the second semiconductor component has a third terminal for transmitting the second signal between the second semiconductor component and the first semiconductor component. Further, the first signal is transmitted at a higher frequency than the second signal. Furthermore, the second terminal of the first semiconductor component and the third terminal of the second semiconductor component are electrically connected to each other via the first wiring member.Type: GrantFiled: February 10, 2016Date of Patent: June 18, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Kazuyuki Nakagawa, Katsushi Terajima, Keita Tsuchiya, Yoshiaki Sato, Hiroyuki Uchida, Yuji Kayashima, Shuuichi Kariyazaki, Shinji Baba
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Patent number: RE47461Abstract: A differential amplifier circuit includes a first differential transistor pair, a second differential transistor pair, an adder section and an amplifying unit. The first differential transistor pair receives first and second input signals and an output signal as a third input signal, and the second differential transistor pair receives the first and second input signals and the output signal as a fourth input signal. The adder section adds first output signals from the first differential transistor pair and second output signals from the second differential transistor pair, and the amplifying unit amplifies an addition resultant signal from the adder section to output to the first and second differential transistor pairs.Type: GrantFiled: November 30, 2017Date of Patent: June 25, 2019Assignee: Renesas Electronics CorporationInventors: Kouichi Nishimura, Atsushi Shimatani