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公开(公告)号：US10910136B2
公开(公告)日：2021-02-02
申请号：US16185194
申请日：2018-11-09
Applicant: Renesas Electronics Corporation
Inventor： Satoshi Kondo , Kazuaki Kubo , Noriyuki Itano
Abstract: A semiconductor device includes an output driving circuit configured to output an output current to an output terminal; a detection resistor connected between the output terminal and the output driving circuit; an amplification unit configured to output an analog detection signal generated by amplifying a voltage between both ends of the detection resistor; a current generation circuit configured to output a reference current; a reference resistor connected between the current generation circuit and a ground and configured to output a reference voltage according to the reference current; an A/D converter configured to convert the analog detection signal into a digital detection signal using the reference voltage as a reference; and a control circuit configured to control the output current output from the output driving circuit according to the digital detection signal. The detection resistor has a same temperature characteristics as the reference resistor.
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公开(公告)号：US10346231B2
公开(公告)日：2019-07-09
申请号：US15711000
申请日：2017-09-21
Applicant: Renesas Electronics Corporation
Inventor： Toshiaki Furuya , Osamu Watanabe , Satoshi Kondo
IPC: G06F11/07 , G06F1/24 , G06F1/32 , G06F1/3234 , G06F1/3203
Abstract: A watchdog timer circuit for use in microcomputer monitor systems is disclosed. This circuit includes a timer circuit responsive to receipt of a count clock signal for counting it up, and a timer control circuit which loads an externally inputted data signal (stn) in sync with a timer refresh instruction (prun) and holds therein a sequentially loaded latest multi-bit data signal as reference data. When the reference data agrees with a predefined pattern and simultaneously another prespecified condition is met, the timer control circuit interrupts the clock signal counting operation of the timer circuit. During interruption of the counting operation, when the reference data does not agree with the predefined pattern or when the above-stated another prespecified condition becomes unsatisfied, the control circuit allows the timer circuit to restart the clock signal counting operation.
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Patent Agency Ranking
公开(公告)号：US10176913B2
公开(公告)日：2019-01-08
申请号：US15071034
申请日：2016-03-15
Applicant: Renesas Electronics Corporation
Inventor： Satoshi Kondo , Kazuaki Kubo , Noriyuki Itano
Abstract: An output driving circuit outputs an output current to a solenoid incorporated in a vehicle through an output terminal. A detection resistor connected between the output terminal and the output driving circuit. An amplification unit configured to output an analog detection signal generated by amplifying a voltage between both ends of the detection resistor. A current generation circuit configured to output a reference current. A reference resistor connected between the current generation circuit and a ground and configured to output a reference voltage according to the reference current. An A/D converter configured to convert the analog detection signal into a digital detection signal using the reference voltage as a reference. A control circuit configured to control the output current output from the output driving circuit according to the digital detection signal.
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公开(公告)号：US09798602B2
公开(公告)日：2017-10-24
申请号：US14953403
申请日：2015-11-29
Applicant: Renesas Electronics Corporation
Inventor： Toshiaki Furuya , Osamu Watanabe , Satoshi Kondo
CPC classification number: G06F11/0757 , G06F1/24 , G06F1/3203 , G06F1/3234 , G06F11/0721 , G06F11/079 , Y02D50/20
Abstract: A watchdog timer circuit for use in microcomputer monitor systems is disclosed. This circuit includes a timer circuit responsive to receipt of a count clock signal for counting it up, and a timer control circuit which loads an externally inputted data signal (stn) in sync with a timer refresh instruction (prun) and holds therein a sequentially loaded latest multi-bit data signal as reference data. When the reference data agrees with a predefined pattern and simultaneously another prespecified condition is met, the timer control circuit interrupts the clock signal counting operation of the timer circuit. During interruption of the counting operation, when the reference data does not agree with the predefined pattern or when the above-stated another prespecified condition becomes unsatisfied, the control circuit allows the timer circuit to restart the clock signal counting operation.
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公开(公告)号：US09229521B2
公开(公告)日：2016-01-05
申请号：US13754982
申请日：2013-01-31
Applicant: Renesas Electronics Corporation
Inventor： Toshiaki Furuya , Osamu Watanabe , Satoshi Kondo
CPC classification number: G06F11/0757 , G06F1/24 , G06F1/3203 , G06F1/3234 , G06F11/0721 , G06F11/079 , Y02D50/20
Abstract: A watchdog timer circuit for use in microcomputer monitor systems is disclosed. This circuit includes a timer circuit responsive to receipt of a count clock signal for counting it up, and a timer control circuit which loads an externally inputted data signal (stn) in sync with a timer refresh instruction (prun) and holds therein a sequentially loaded latest multi-bit data signal as reference data. When the reference data agrees with a predefined pattern and simultaneously another prespecified condition is met, the timer control circuit interrupts the clock signal counting operation of the timer circuit. During interruption of the counting operation, when the reference data does not agree with the predefined pattern or when the above-stated another prespecified condition becomes unsatisfied, the control circuit allows the timer circuit to restart the clock signal counting operation.
Abstract translation: 公开了一种用于微机监控系统的看门狗定时器电路。 该电路包括响应于接收到用于对其进行计数的计数时钟信号的定时器电路，以及定时器控制电路，其与定时器刷新指令（prun）同步地加载外部输入的数据信号（stn），并且在其中保持顺序加载 最新的多位数据信号作为参考数据。 当参考数据与预定义模式一致时，同时满足另一个预定条件时，定时器控制电路中断定时器电路的时钟信号计数操作。 在计数操作中断期间，当参考数据与预定义模式不一致时，或者当上述另一个预定条件不满足时，控制电路允许定时器电路重启时钟信号计数操作。
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公开(公告)号：US10302681B2
公开(公告)日：2019-05-28
申请号：US15401596
申请日：2017-01-09
Applicant: Renesas Electronics Corporation
Inventor： Masanori Otsuka , Wataru Saito , Yoshitaka Jingu , Yasuhiko Kokami , Satoshi Kondo , Junya Horishima
IPC: G01R19/32 , H03K17/687 , F16D48/06 , F16D121/18
Abstract: According to one embodiment, a current detection circuit (12) includes: a detection resistor (Rs) provided between a solenoid valve (106) and a solenoid driver (11); an amplification unit (121) configured to amplify a detected voltage of the detection resistor (Rs); an AD converter (122) that is driven by a reference voltage (Vref) generated based on a reference current (Iref) and configured to convert an output voltage from the amplification unit (121) into a digital value and output the digital value as a detected current value (D1); and a correction unit configured to perform a correction on the detected current value (D1). The correction unit includes: a temperature sensor (123); a storage unit (125) configured to store information about temperature characteristics of the detected current value (D1) generated due to temperature characteristics of a reference current in each of two or more different temperature regions; and an operation unit configured to apply, to the detected current value (D1), a first correction coefficient calculated based on a detection result of the temperature sensor (123) and information about temperature characteristics of the detected current value (D1) stored in the storage unit (125).
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公开(公告)号：US20190080830A1
公开(公告)日：2019-03-14
申请号：US16185194
申请日：2018-11-09
Applicant: Renesas Electronics Corporation
Inventor： Satoshi Kondo , Kazuaki Kubo , Noriyuki Itano
Abstract: A semiconductor device includes an output driving circuit configured to output an output current to an output terminal; a detection resistor connected between the output terminal and the output driving circuit; an amplification unit configured to output an analog detection signal generated by amplifying a voltage between both ends of the detection resistor; a current generation circuit configured to output a reference current; a reference resistor connected between the current generation circuit and a ground and configured to output a reference voltage according to the reference current; an A/D converter configured to convert the analog detection signal into a digital detection signal using the reference voltage as a reference; and a control circuit configured to control the output current output from the output driving circuit according to the digital detection signal. The detection resistor has a same temperature characteristics as the reference resistor.
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