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公开(公告)号：US20210057021A1
公开(公告)日：2021-02-25
申请号：US16546152
申请日：2019-08-20
Applicant: MICRON TECHNOLOGY, INC.
IPC: G11C11/406 , G11C11/408
Abstract: Embodiments of the disclosure are drawn to apparatuses and methods for analog row access hacking. A plurality of unit cells are provided, each of which contains one or more analog circuits used to track accesses to a portion of the wordlines of a memory device. When a wordline in the portion is accessed, the unit cell may update an accumulator voltage, for example by adding charge to a capacitor. A comparator circuit may determine when one or more accumulator voltages cross a threshold (e.g., a reference voltage). Responsive to the accumulator voltage crossing the threshold, an aggressor address may be loaded in a targeted refresh queue, or if the aggressor address is already in the queue, a priority flag associated with that address may be set. Aggressor addresses may be provided to have their victims refreshed in an order based on the number of set priority flags.
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公开(公告)号：US10897244B1
公开(公告)日：2021-01-19
申请号：US16545384
申请日：2019-08-20
Applicant: MICRON TECHNOLOGY, INC.
Inventor： Zhi Qi Huang , Wei Lu Chu , Dong Pan
Abstract: Apparatus and methods are described for voltage dependent delay. An example apparatus includes an oscillator including a delay circuit that is configured to provide an oscillating output signal has a delay based on a delay of the delay circuit. The delay of the delay circuit is based on a voltage it receives. For example, the delay of the delay circuit increases for an increasing received voltage and decreases for a decreasing received voltage. As a result, the oscillating output signal provided by the oscillator is based on the received voltage. For example, a frequency of the oscillating output signal decreases for increasing received voltage and increases for decreasing received voltage. Described in another way, the frequency of the oscillating output signal is relatively low for relatively high received voltage and relatively high for relatively low received voltage.
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33.发明申请公开(公告)号：US20200294569A1
公开(公告)日：2020-09-17
申请号：US16084119
申请日：2018-05-24
Applicant: Micron Technology, Inc.
IPC: G11C11/406
Abstract: Apparatuses and methods for pure-time, self-adopt sampling for RHR refresh. An example apparatus includes a memory bank comprising a plurality of rows each associated with a respective row address, and a sampling timing generator circuit configured to provide a timing signal having a plurality of pulses. Each of the plurality of pulses is configured to initiate sampling of a respective row address associated with a row of the plurality of rows to detect a row hammer attack. The sampling timing generator includes first circuitry configured to provide a first subset of pulses of the plurality of pulses during a first time period and includes second circuitry configured to initiate provision of a second subset of pulses of the plurality of pulses during a second time period after the first time period.
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34.发明申请公开(公告)号：US20190339134A1
公开(公告)日：2019-11-07
申请号：US16509262
申请日：2019-07-11
Applicant: MICRON TECHNOLOGY, INC.
Inventor： Dong Pan
Abstract: A temperature sensor is disclosed. The temperature sensor includes an analog core having at least first and second circuit nodes and configured to provide a temperature dependent output, a multiplexer coupled to the first and second circuit nodes and configured for at least first and second states in each of which the first circuit node couples to a different circuit element and in each of which the second circuit node couples to a different circuit element, and a controller coupled to the analog core and configured to provide a temperature measurement that is an average of at least first and second readings of the temperature dependent output of the analog core, the first reading taken while the multiplexer is in the first state, and the second reading taken while the multiplexer is in the second state.
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35.发明授权公开(公告)号：US10437271B2
公开(公告)日：2019-10-08
申请号：US16020510
申请日：2018-06-27
Applicant: Micron Technology, Inc.
Inventor： Yuanzhong Wan , Dong Pan
IPC: G05F1/46
Abstract: Systems and apparatuses for a configurable, temperature dependent reference voltage generator are provided. An example apparatus includes control logic configured receive temperature data, and produce a signal, based on the temperature data, indicative of the temperature data, a temperature dependence and a temperature slope. The apparatus may also include a temperature slope reference generator configured to produce a reference voltage having the temperature dependence and the temperature slope, based on the signal from the control logic.
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Patent Agency Ranking
公开(公告)号：US20190273434A1
公开(公告)日：2019-09-05
申请号：US16413721
申请日：2019-05-16
Applicant: MICRON TECHNOLOGY, INC.
Inventor： Ming H. Li , Dong Pan
IPC: H02M3/07
Abstract: Methods of operating a charge pump, and charge pumps configured to perform similar methods, involve monitoring a level of a supply voltage of the charge pump, and turning off an oscillator of the charge pump responsive to the level of the supply voltage dropping below a certain level, wherein turning off the oscillator comprises setting an inverter in a ring oscillator loop of the oscillator to a steady state output.
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公开(公告)号：US10389238B2
公开(公告)日：2019-08-20
申请号：US15927150
申请日：2018-03-21
Applicant: MICRON TECHNOLOGY, INC.
Inventor： Ming H. Li , Dong Pan
Abstract: Methods of operating a charge pump, and charge pumps configured to perform similar methods, involve monitoring a level of a supply voltage of the charge pump, and turning off an oscillator of the charge pump responsive to the level of the supply voltage dropping below a certain level, wherein turning off the oscillator comprises setting an inverter in a ring oscillator loop of the oscillator to a steady state output.
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38.发明申请公开(公告)号：US20190190384A1
公开(公告)日：2019-06-20
申请号：US16283230
申请日：2019-02-22
Applicant: MICRON TECHNOLOGY, INC.
Inventor： Yuanzhong Wan , Dong Pan
Abstract: According to one embodiment of this disclosure, an apparatus is disclosed. The apparatus includes a voltage regulator configured to produce a regulated voltage, a plurality of current circuits coupled in parallel between an output node and a power node, each of the plurality of current circuits including first and second transistors coupled in series, the first transistor of each of the plurality of current circuits being biased with the regulated voltage, and a control circuit configured to activate the second transistor of selected one or ones of the plurality of current circuits responsive, at least in part, to a voltage at the output node.
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公开(公告)号：US10277427B1
公开(公告)日：2019-04-30
申请号：US15871636
申请日：2018-01-15
Applicant: Micron Technology, Inc.
Abstract: A device includes a first terminal configured to receive a reference voltage, a second terminal configured to receive a weighted tap value, a local generator circuit configured to create a group of unsigned voltage correction values based on the reference voltage and the weighted tap value, and a sign configuring circuit configured to receive the group of unsigned voltage correction values from the local generator circuit and assign a polarity to each respective unsigned voltage correction value of the group of unsigned voltage correction values, creating correction signals from the group of unsigned voltage correction values. The device also includes an output configured to transmit the correction signals to a first input of a processing circuit, wherein the processing circuit is configured to use the correction signals to offset inter-symbol interference from a data stream on a distorted bit based at least on a control signal.
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公开(公告)号：US20190123685A1
公开(公告)日：2019-04-25
申请号：US16225678
申请日：2018-12-19
Applicant: MICRON TECHNOLOGY, INC.
IPC: H03B5/04 , H03K3/011 , H03K3/0231 , H03L1/02 , H03B5/24 , G11C7/10 , H03K3/03 , G11C11/406 , H03K4/502
Abstract: Apparatuses and methods for temperature independent oscillator circuits are disclosed herein. An example apparatus may include a pulse generator circuit configured to provide a periodic pulse based on the charging and discharging and discharging of a capacitor and further based on a reference voltage. The pulse generator circuit may include a capacitor coupled between a first reference voltage and a first node, wherein the capacitor is configured to be charged and discharged through the node in response to the periodic pulse, a resistor and a diode coupled in series between a second node and a second reference voltage, and a comparator coupled to the first and second nodes and configured to provide the periodic pulse based on voltages on the first and second nodes, wherein a period of the periodic pulse is based at least on the resistor and the a current.
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