Patents by Inventor Andy Wangkun CHEN
Andy Wangkun CHEN 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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Publication number: 20260237412Abstract: A storage circuit, a method, a device and a non-transitory computer-readable medium. The storage circuit includes a first storage circuit instance having a first physical storage circuit, a second storage circuit instance having one or more pairs of second physical storage circuits; and a selection circuit to select, for a given output of the storage circuit system, an output from the first storage circuit instance or an output from the second storage circuit instance.Type: ApplicationFiled: February 10, 2025Publication date: August 13, 2026Inventors: Andy Wangkun CHEN, Yew Keong CHONG, Sriram THYAGARAJAN, Abhishek Kumar SINGH
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Patent number: 12706140Abstract: Various implementations described herein are related to a device having multi-page memory with a first core array and bitcells accessible via first wordlines and a second core array with bitcells accessible via second wordlines. The device may have wordline drivers coupled to the bitcells in the first core array via the first wordlines and to the bitcells in the second core array via the second wordlines. The device may have buried metal lines formed within a substrate, and the buried metal lines may be used to couple the wordline drivers to the first wordlines.Type: GrantFiled: November 3, 2022Date of Patent: August 11, 2026Assignee: Arm LimitedInventors: Andy Wangkun Chen, Vivek Asthana, Sony, Ettore Amirante, Yew Keong Chong
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Publication number: 20260221963Abstract: Power multiplexer circuitry, systems, and methods. Power multiplexer circuitry includes interface control logic including first SR latch circuitry to generate first and second interface control signals responsive to first and second latch control signals, a PMUX control circuit to provide a first selection control signal responsive to the first interface control signal and to provide a second selection control signal responsive to the second interface control signal, a power output circuit to output a selected voltage at a PMUX output, the power output circuit including first switch circuitry arranged between a first voltage rail and the PMUX output to provide an electrical path therebetween responsive to the first selection control signal, and second switch circuitry arranged between a second voltage rail and the PMUX output to provide an electrical path therebetween responsive to the second selection control signal.Type: ApplicationFiled: January 30, 2025Publication date: July 30, 2026Inventors: Marlin Wayne FREDERICK, JR., Andy Wangkun CHEN, Vijaya Kumar VINUKONDA, Ranabir DEY, Edward Martin MCCOMBS, JR.
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Patent number: 12681643Abstract: A memory device includes a bitcell array having at least a first plurality of first adjacent bitcell banks and a second plurality of second adjacent bitcell banks. One or more bitcell array input lines are coupled to the bitcell array at a first physical location between the first adjacent bitcell banks. One or more bitcell array output lines are coupled to the bitcell array at a second physical location between the second adjacent bitcell banks. The one or more bitcell array input lines are further coupled from the first plurality of adjacent bitcell banks to the second plurality of bitcell banks at a physical location between the second plurality of adjacent bitcell banks. The one or more bitcell array output lines are further coupled from the second plurality of bitcell banks to the first plurality of bitcell banks at a physical location between the first plurality of bitcell banks.Type: GrantFiled: April 30, 2024Date of Patent: July 14, 2026Assignee: Arm LimitedInventors: Rajiv Kumar Sisodia, Andy Wangkun Chen, Yew Keong Chong, Prashantkumar Jayantilal Vaghasia, Vishal Thakre, Jaspreet Singh, Sreelekha Nallagatla
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Publication number: 20260179681Abstract: A circuit includes first and second logic gates, where the first logic gate is configured to output a bitline precharge signal based on a global bitline precharge signal and an output of the second logic gate, and the output of the second logic gate is based on at least a sense amplifier precharge signal and a control signal. Also, the circuit is configured to control a precharge of one or more bitcells based on enabling or disabling the bitline precharge signal. A method includes: detecting, by a circuit, one GTP pulse or two GTP pulses per unit cycle, where the one GTP pulse corresponds to either a read operation or a write operation, and the two GTP pulses correspond to both the read operation and the write operation.Type: ApplicationFiled: December 23, 2024Publication date: June 25, 2026Inventors: Rahul Mathur, Andy Wangkun Chen, Nikhil Gutti Pyidi Venkata Yuva, Yew Keong Chong
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Publication number: 20260171137Abstract: In one implementation, a circuit for power-switching includes: power gating circuitry and a first back metal, where a single output of the power gating circuitry is configured to provide at least one of power and ground supply by way of the first back metal to a word line driver circuitry. A method for power-switching includes: providing a power gating circuitry and one or more back metals; and providing, by the power gating circuitry, at least one of power and ground supply through the one or more back metals to a word line driver circuitry. A method of fabrication includes: fabricating a memory macro unit; forming one or more back metals; and coupling power gating circuitry and word line driver circuitry of the memory macro unit by way of the one or more back metals.Type: ApplicationFiled: December 16, 2024Publication date: June 18, 2026Inventors: Sumant Kumar Thapliyal, Navin Agarwal, Sriram Thyagarajan, Yew Keong Chong, Andy Wangkun Chen
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Patent number: 12658247Abstract: A first memory instance comprises one or more first bitcell arrays and one or more peripheral circuits. The first memory instance further comprises a high-speed voltage monitoring circuit operable to monitor a supply voltage and a power down signal in the first memory instance, the high-speed voltage monitoring circuit further operable to provide an output power ready signal derived from the supply voltage and the power down signal such that the output power ready signal indicates when the power down signal is low and the supply voltage is high.Type: GrantFiled: May 31, 2024Date of Patent: June 16, 2026Assignee: Arm LimitedInventors: Rajiv Kumar Sisodia, Disha Singh, Andy Wangkun Chen, Santhoshnaik Haleshnaik
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Publication number: 20260118420Abstract: A circuit for design-for-test (DFT)-mixing and internal clock pulse generation in test and functional modes includes a tristate inverter; a reset circuitry; and a clamp circuitry, where such clamp circuitry is configured for design-for-test (DFT)-mixing. A method for design-for-test DFT-mixing includes: in a test mode, providing a DFT information signal to a circuit; in response to receiving a clock signal at a clamp circuitry, retaining the DFT information signal at the clamp circuitry; and in response to a transition of the clock signal, deactivating the clamp circuitry and generating an internal clock pulse. A method for DFT-mixing includes: in a functional mode, providing, from a tristate inverter, a CTR signal on a critical path of a circuit; in response to an external clock signal, receiving at a logic circuitry coupled to the critical path, at least the CTR signal; and generating, by a first stage of the logic circuitry, an internal clock pulse.Type: ApplicationFiled: October 28, 2024Publication date: April 30, 2026Inventors: Andy Wangkun Chen, Shruti Aggarwal
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Publication number: 20260100707Abstract: A circuit for level-shifting includes a pulse-shaper circuit comprising a first PMOS transistor; and a level-shifting circuit, where the first PMOS transistor is configured to precharge a node on a wordline generation path of the level-shifting circuit. Also, a method of level-shifting includes detecting, at a PMOS transistor of a pulse-shaping circuit, a falling edge of a clock signal; and generating, by the pulse-shaping circuit, a pulse to activate the PMOS transistor to precharge a node on a wordline generation path of a level-shifting circuit. Another circuit for level-shifting includes a first PMOS transistor; and a level-shifting circuitry, where the circuit is configured to generate a pulse on a second voltage domain from a clock signal on a first voltage domain.Type: ApplicationFiled: October 3, 2024Publication date: April 9, 2026Inventors: Andy Wangkun Chen, Mohit Chanana, Rajesh ., Parveen Kumar, Yew Keong Chong
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Publication number: 20260094643Abstract: Briefly, example apparatuses, articles of manufacture, and/or techniques are disclosed that may be implemented, in whole or in part, to implement, facilitate and/or support integrated circuits comprising memory read output circuitry including a read signal input terminal, a latch, and a combinatorial gate coupled to the read signal input terminal and the latch.Type: ApplicationFiled: October 2, 2024Publication date: April 2, 2026Inventors: Rajiv Kumar Sisodia, Disha Singh, Andy Wangkun Chen, Akash Bangalore Srinivasa, Arjunesh Namboothiri Madhavan
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Publication number: 20260039299Abstract: Briefly, example apparatuses, articles of manufacture, and/or techniques are disclosed that may be implemented, in whole or in part, to implement, facilitate and/or support integrated circuits comprising Boolean logic gate circuitry and corresponding voltage level shifting circuitry.Type: ApplicationFiled: July 30, 2024Publication date: February 5, 2026Inventors: Mohit Chanana, Andy Wangkun Chen, Yew Keong Chong, Vivek Asthana, Himanshu Rathore, Abhishek Kumar
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Publication number: 20260038585Abstract: A memory instance comprises a bitcell array and peripheral circuitry. A bitcell array power supply provides a fixed voltage for the bitcell array, and a peripheral logic power supply provides a variable voltage for peripheral circuitry. A digital power multiplexer is operable to provide a higher of the bitcell array power supply fixed voltage and the peripheral logic power supply variable voltage to the bitcell array.Type: ApplicationFiled: July 31, 2024Publication date: February 5, 2026Inventors: Andy Wangkun Chen, Yew Keong Chong, Rahul Mathur, Mohit Chanana, Ankur Goel
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Publication number: 20260038587Abstract: A clocking scheme for a driving a first signal and a write word line signal to a multi-port memory device, the clocking scheme comprising: a clock configured to control timing of operations within the multi-port memory device, wherein the clocking scheme includes at least two separate clocking phases; and activating the first signal line and the write word line in different clock phases of the clocking scheme, such that the first signal line is activated in a first clock phase and the write word line is activated in a second clock phase.Type: ApplicationFiled: July 31, 2024Publication date: February 5, 2026Inventors: Rahul MATHUR, Andy Wangkun CHEN
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Publication number: 20260004842Abstract: Various implementations described herein are related to a read multiplexer circuit for a multiport register file, comprising: an input stage coupled to an array of storage nodes, each storage node coupled to drive an output of a respective bitcell; a read stage comprising control logic dividing the array of storage nodes into one or more sets and first circuitry that provides a first read word line to a first storage node of a first set for reading data from the first storage node and a second read word line to a second storage node of the first set for reading data from the second storage node; and a first latch stage comprising second circuitry that provides a third read word line to the first and second storage node of the first set to latch the read from one of the first and second storage nodes.Type: ApplicationFiled: June 26, 2024Publication date: January 1, 2026Inventors: Rahul MATHUR, Andy Wangkun CHEN, Yew Keong CHONG, Parveen KUMAR
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Patent number: 12499917Abstract: Inrush current in a memory such as SRAM cache may be managed by using one or more integrated delay elements such as inverters, RC delay lines, and the like to significantly slow down power down signal propagation between memory instances in a memory array. The delay in some examples may be between memory instances, while in other examples the delay is also introduced between bitcell arrays within a memory instance. By staggering the power up times of interconnected or chained memory instances, inrush current when powering the memory instances on or resuming from an inactive state may be reduced.Type: GrantFiled: January 30, 2024Date of Patent: December 16, 2025Assignee: Arm LimitedInventors: Andy Wangkun Chen, Yew Keong Chong
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Patent number: 12499967Abstract: Various implementations described herein are directed to a device having a bank of bitcells split into a plurality of portions including a first row slice of the bitcells and a second row slice of the bitcells. Also, the device may have control circuitry configured to access and repair a first bitcell in the first row slice with a first row address and a second bitcell in the second row slice with a second row address that is different than the first row address.Type: GrantFiled: September 7, 2023Date of Patent: December 16, 2025Assignee: Arm LimitedInventors: Andy Wangkun Chen, Khushal Gelda, Ramesh Manohar, Teresa Louise McLaurin, Prashant Mohan Kulkarni
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Publication number: 20250372157Abstract: A first memory instance comprises one or more first bitcell arrays and one or more peripheral circuits. The first memory instance further comprises a high-speed voltage monitoring circuit operable to monitor a supply voltage and a power down signal in the first memory instance, the high-speed voltage monitoring circuit further operable to provide an output power ready signal derived from the supply voltage and the power down signal such that the output power ready signal indicates when the power down signal is low and the supply voltage is high.Type: ApplicationFiled: May 31, 2024Publication date: December 4, 2025Inventors: Rajiv Kumar Sisodia, Disha Singh, Andy Wangkun Chen, Santhoshnaik Haleshnaik
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Publication number: 20250335098Abstract: A memory device includes a bitcell array having at least a first plurality of first adjacent bitcell banks and a second plurality of second adjacent bitcell banks. One or more bitcell array input lines are coupled to the bitcell array at a first physical location between the first adjacent bitcell banks. One or more bitcell array output lines are coupled to the bitcell array at a second physical location between the second adjacent bitcell banks. The one or more bitcell array input lines are further coupled from the first plurality of adjacent bitcell banks to the second plurality of bitcell banks at a physical location between the second plurality of adjacent bitcell banks. The one or more bitcell array output lines are further coupled from the second plurality of bitcell banks to the first plurality of bitcell banks at a physical location between the first plurality of bitcell banks.Type: ApplicationFiled: April 30, 2024Publication date: October 30, 2025Inventors: Rajiv Kumar Sisodia, Andy Wangkun Chen, Yew Keong Chong, Prashantkumar Jayantilal Vaghasia, Vishal Thakre, Jaspreet Singh, Sreelekha Nallagatla
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Patent number: 12449890Abstract: A memory instance comprises a plurality of banks of storage cells to store data values, and input/output circuitry shared between the plurality of banks for receiving write data or outputting read data. Each bank of storage cells supports a power saving mode and an operational mode. A control interface receives power control signals for controlling use of the power saving mode. Bank power control circuitry individually controls, for each of a plurality of subsets of banks of storage cells within the same memory instance, whether that subset of banks is in the power saving mode based on the power control signals. For at least one setting for the power control signals, one subset of banks is in the power saving mode while another subset of banks in the same memory instance is in the operational mode. Also disclosed is power control circuitry which selects the power mode to use for each subset of banks and generates the power control signals.Type: GrantFiled: September 26, 2023Date of Patent: October 21, 2025Assignee: Arm LimitedInventors: Andy Wangkun Chen, Yew Keong Chong, Sriram Thyagarajan, Munish Kumar, Vivek Asthana, Andrew John Turner, Alex James Waugh
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Publication number: 20250246214Abstract: Inrush current in a memory such as SRAM cache may be managed by using one or more integrated delay elements such as inverters, RC delay lines, and the like to significantly slow down power down signal propagation between memory instances in a memory array. The delay in some examples may be between memory instances, while in other examples the delay is also introduced between bitcell arrays within a memory instance. By staggering the power up times of interconnected or chained memory instances, inrush current when powering the memory instances on or resuming from an inactive state may be reduced.Type: ApplicationFiled: January 30, 2024Publication date: July 31, 2025Inventors: Andy Wangkun Chen, Yew Keong Chong