Patents Represented by Attorney Daniel D. Hill
  • Patent number: 8042002
    Abstract: For some data processing systems, it is important to be able to handle overlapping debug events generated by a shared set of debug resources which are trying to cause both exception processing and debug mode entry. However, exception processing and debug mode entry generally have conflicting requirements. In one embodiment, exception priority processing is initially given to the software debug event. Normal state saving is performed and the first instruction of the debug exception handler is fetched, but not executed. Priority is then switched from the software debug event to the hardware debug event and a debug halted state is entered. Once processing of the hardware debug event has been completed, priority is returned to the software debug event and the debug exception handler is executed.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: October 18, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventors: William C. Moyer, Jimmy Gumulja, Jeffrey W. Scott
  • Patent number: 8041132
    Abstract: Sequential video data frames are encoded using cores including a first core and a second core. A first beginning frame is divided into slices. The first core is assigned to process a first slice. The second core is assigned to process a second slice. The first beginning frame is processed using the cores which results in a first ending frame in which the first slice was partitioned into a third slice and a fourth slice. The third slice was processed by the first core. The fourth slice and the second slice were processed by the second core. A second beginning frame, which immediately follows the first ending frame, is divided into a second plurality of slices. The first core is assigned to the third slice. The second core is assigned to a fifth slice which has a size equal to a sum of the second and fourth slices.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: October 18, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventor: Yong Yan
  • Patent number: 8031549
    Abstract: An integrated circuit comprises a global power supply conductor, a plurality of circuit blocks, a plurality of voltage converters, and control logic. The global power supply conductor is configured to distribute a supply voltage. The circuit blocks are selectively coupled to the global power supply conductor. The plurality of voltage converters are coupled to the global power supply conductor. An output voltage of individual voltage converters of the plurality of voltage converters are selectively coupled to one or more of the plurality of circuit blocks. The control logic is configured to control the selective coupling of at least one of the supply voltage and the output voltage of individual voltage converters of the plurality of voltage converters to corresponding ones of the plurality of circuit blocks. Also, the control logic controls a magnitude of the output voltage of individual voltage converters of the plurality of voltage converters.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 4, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Prashant U. Kenkare, Troy L. Cooper
  • Patent number: 8018259
    Abstract: A method for a phase-locked loop (PLL) in an integrated circuit, wherein the PLL comprises a voltage-controlled oscillator (VCO). The method includes, in a training mode: (1) setting a control voltage of the VCO at a first voltage level; (2) increasing the control voltage of the VCO from the first voltage level to a second voltage level, until a loss of the feedback signal is detected; and (3) storing an indicator value corresponding to the second voltage level of the control voltage of the VCO. The method further includes, in a normal mode: (1) monitoring a voltage level of the control voltage of the VCO by generating a monitored indicator value corresponding to the voltage level of the control voltage of the VCO; and (2) asserting the loss of feedback signal based on a comparison of the monitored indicator value and the indicator value.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: September 13, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Hector Sanchez, Gayathri A. Bhagavatheeswaran, Xinghai Tang
  • Patent number: 7986172
    Abstract: A switching circuit includes first and second transistors, and a driver circuit. The first transistor has a first current electrode coupled to a first power supply voltage terminal, a second current electrode, and a control electrode. The second transistor has a first current electrode coupled to the second current electrode of the first transistor, a second current electrode coupled to a second power supply voltage terminal, and a control electrode. The driver circuit has an input for receiving an input signal, and an output coupled to the control electrode of the first transistor. The driver circuit precharges the control electrode of the first transistor to a first predetermined voltage, and in response to the input signal transitioning from a first logic state to a second logic state, the driver circuit provides a second predetermined voltage to the control electrode of the first transistor to cause the first transistor to be conductive.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: July 26, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventor: Thierry Sicard
  • Patent number: 7957190
    Abstract: A memory comprising a plurality of P-channel split-gate memory cells are organized in rows and columns. Each of the plurality of P-channel split-gate memory cells comprises a select gate, a control gate, a source region, a drain region, a channel region, and a charge storage layer comprising nanocrystals. Programming a memory cell of the plurality of P-channel split-gate memory cells comprises injecting electrons from a channel region of the memory cell to the charge storage layer. Erasing the memory cell comprises injecting holes from the channel region to the charge storage region.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: June 7, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Cheong M. Hong, Sung-Taeg Kang, Brian A. Winstead
  • Patent number: 7924131
    Abstract: An electrical component (100) having an inductor includes: (a) a first substrate (102) comprising at least one first electrically conductive layer (108, 110, 112); (b) one or more second substrates (104, 106) comprising at least one second electrically conductive layer (120, 132, 144); and (c) one or more electrical interconnections (124, 134, 142) electrically coupling the at least one first electrically conductive layer and the at least one second electrically conductive layer, wherein the one or more first electrically conductive layers, the one or more second electrically conductive layers and the one or more electrical interconnections are electrically coupled together to form the inductor (150).
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: April 12, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventor: James A. Walls
  • Patent number: 7919006
    Abstract: A method for making a MEMS structure comprises patterning recesses in a dielectric layer overlying a substrate, each recess being disposed between adjacent mesas of dielectric material. A conformal layer of semiconductor material is formed overlying the recesses and mesas. The conformal layer is chemical mechanically polished to form a chemical mechanical polished surface, wherein the chemical mechanical polishing is sufficient to create dished portions of semiconductor material within the plurality of recesses. Each dished portion has a depth proximate a central portion thereof that is less than a thickness of the semiconductor material proximate an outer portion thereof. A semiconductor wafer is then bonded to the chemical mechanical polished surface. The bonded semiconductor wafer is patterned with openings according to the requirements of a desired MEMS transducer. Lastly, the MEMS transducer is released.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: April 5, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Woo Tae Park, Hemant D. Desai
  • Patent number: 7903483
    Abstract: An integrated circuit having a memory and a method for operating the memory are provided. The method for operating the memory comprises: accessing a first portion of the memory, the first portion having a first access margin; detecting an error in the first portion of the memory; changing the first access margin to a second access margin, the second access margin being different than the first access margin; determining that the error is corrected with the first portion having the second access margin; and storing an access assist bit in a first storage element, the access assist bit corresponding to the first portion, wherein the assist bit, when set, indicates that subsequent accesses to the first portion are accomplished at the second access margin.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: March 8, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Andrew C. Russell, Shayan Zhang
  • Patent number: 7867858
    Abstract: A method includes forming a first transistor having a first gate dielectric thickness and a first source/drain extension depth, a second transistor having a second gate dielectric thickness and the first source/drain extension depth, and a third transistor having the second gate dielectric thickness and a second source/drain extension depth. The second source/drain extension depth is greater than the first source/drain extension depth. The second gate dielectric thickness is greater than the first gate dielectric thickness. The first transistor is used in a logic circuit. The third transistor is used in an I/O circuit. The second transistor is made without extra processing steps and is better than either the first or third transistor for coupling a power supply terminal to the logic circuit in a power-up mode and decoupling the power supply terminal from the logic circuit in a power-down mode.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: January 11, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Giri Nallapati, Sushama Davar, Robert E. Booth, Michael P. Woo, Mahbub M. Rashed
  • Patent number: 7821055
    Abstract: A method of making a semiconductor device on a semiconductor layer includes forming a gate dielectric and a first layer of gate material over the gate dielectric. The first layer is etched to remove a portion of the first layer of gate material over a first portion of the semiconductor layer and to leave a select gate portion. A storage layer is formed over the select gate portion and over the first portion of the semiconductor layer. A second layer of gate material is formed over the storage layer. The second layer of gate material is etched to remove a first portion of the second layer of gate material over a first portion of the select gate portion. A portion of the first portion of the select gate is etched out to leave an L-shaped select structure. The result is a memory cell with an L-shaped select gate.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: October 26, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Konstantin V. Loiko, Cheong M. Hong, Sung-Taeg Kang, Taras A. Kirichenko, Brian A. Winstead
  • Patent number: 7805590
    Abstract: A coprocessor (14) may be used to perform one or more specialized operations that can be off-loaded from a primary or general purpose processor (12). It is important to allow efficient communication and interfacing between the processor (12) and the coprocessor (14). In one embodiment, a coprocessor (14) generates and provides instructions (200, 220) to an instruction pipe (20) in the processor (12). Because the coprocessor (14) generated instructions are part of the standard instruction set of the processor (12), cache (70) coherency is easy to maintain. Also, circuitry (102) in coprocessor (14) may perform an operation on data while circuitry (106) in coprocessor (14) is concurrently generating processor instructions (200, 220).
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: September 28, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: William C. Moyer, Kevin B. Traylor
  • Patent number: 7799678
    Abstract: A method for forming a TSV layout reduces recessing in a silicon nitride layer caused by forming the TSV through a silicon nitride layer having an intrinsic tensile stress or neutral stress. In one embodiment, the method includes compensating for the tensile stressed silicon nitride layer by either moving the TSV location to an area of intrinsic tensile stress, or by substituting a compressively stressed silicon nitride layer in the area of the TSV. The compressively stressed silicon nitride layer experiences less recessing during a TSV etch process than a silicon nitride layer under tensile stress. The smaller recesses are more readily filled when a dielectric liner is applied to the sidewalls of the TSV, reducing the possibility of voids being formed. Also, the smaller recesses require smaller exclusion zones, resulting in less surface area of an integrated circuit being used for the TSVs, as well as greater reliability and improved yields.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: September 21, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Thomas J. Kropewnicki, Ritwik Chatterjee, Kurt H. Junker
  • Patent number: 7800959
    Abstract: A memory has an array of memory cells, column logic, a write driver, a voltage detector, and a bootstrap circuit. The array of memory cells is coupled to pairs of bit lines and word lines. The column logic is coupled to the array and is for coupling a selected pair of bit lines to a pair of data lines. The write driver is coupled to the pair of data lines. The voltage detector provides an initiate boost signal when a voltage of a first data line of the pair of data lines drops below a first level during the writing of the pair of data lines by the write driver. The bootstrap circuit reduces the voltage of the first data line in response to the boost enable signal. This is particularly beneficial when the number of memory cells on a bit line can vary significantly as in a compiler.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: September 21, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Lawrence F. Childs, Craig D. Gunderson, Olga R. Lu, James D. Burnett
  • Patent number: 7799634
    Abstract: Nanocrystals are formed over an insulating layer by depositing a semiconductor layer over the insulating layer. The semiconductor layer is annealed to form a plurality of globules from the semiconductor layer. The globules are annealed using oxygen. Semiconductor material is deposited on the plurality of globules to add semiconductor material to the globules. After depositing the semiconductor material, the globules are annealed to form the nanocrystals. The nanocrystals can then be used in a storage layer of a non-volatile memory cell, especially a split-gate non-volatile memory cell having a select gate over the nanocrystals and a control gate adjacent to the select gate.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: September 21, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Jinmiao J. Shen, Horacio P. Gasquet, Sung-Taeg Kang, Marc A. Rossow
  • Patent number: 7796688
    Abstract: A radio receiver for receiving a signal is provided. The radio receiver comprises an equalizer configured to perform a constant modulus algorithm initialized using a first set of coefficients on the received signal and for generating an equalized signal. The radio receiver further comprises a demodulator coupled to the equalizer for demodulating the equalized signal. The radio receiver further comprises a lowpass filter coupled to the demodulator for lowpass filtering the demodulated signal to detect a spurious signal and to generate an offset signal. The radio receiver further comprises a coefficient generator coupled to the lowpass filter and configured to compare the offset signal to a predetermined threshold, and if the offset signal satisfies a predetermined condition in relation to the predetermined threshold, then to generate a second set of coefficients for re-initializing the constant modulus algorithm.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: September 14, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventor: Jie Su
  • Patent number: 7795951
    Abstract: A voltage multiplier (10) including a first clocked multiplier stage (12) having an input and an output and a second clocked multiplier stage (14, 16) having an input and an output is provided. The voltage multiplier further includes an input level regulator (18) coupled to the input of the first multiplier stage. The voltage multiplier further includes a feedback bias control circuit (32) coupled to the input level regulator, wherein the feedback bias control circuit is further coupled to receive the output (50) of the second multiplier stage, and wherein the feedback bias control circuit generates a feedback signal (58) affecting an output of the input level regulator based on a comparison between a voltage proportional to a voltage at the output of the second clocked multiplier stage and a reference voltage.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: September 14, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventor: Jon S. Choy
  • Patent number: 7795904
    Abstract: A switching circuit includes a first transistor and a driver circuit. The first transistor has a first current electrode coupled to a first power supply voltage terminal to receive a first power supply voltage, a control electrode, and a second current electrode coupled to an output terminal. The driver circuit has an output coupled to the control electrode of the first transistor, the driver circuit for providing a bias current to the control electrode of the first transistor that is proportional to an inverse of a square root of a voltage between the first current electrode and the control electrode of the first transistor. A voltage at the output terminal increases linearly during a turn-on period of the first transistor.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: September 14, 2010
    Inventor: Thierry Sicard
  • Patent number: 7791389
    Abstract: A circuit has first latch, a second latch, a coupling circuit, and a power down circuit. The first latch has an input/output coupled to a data node. The second latch has an input/output. The coupling circuit is coupled between the input/output of the second latch and the data node. The coupling circuit is enabled during a normal operation of the circuit and disabled during a power down mode of the circuit. The power down control circuit is for disabling the first latch during the power down mode and for a time period after a transition from the power down mode to the normal operation. This allows the second latch to set the state of the first latch when transitioning from the power down mode to the normal mode. Thus normal operation can be fast, and the power down mode can have low leakage current.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: September 7, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventor: Scott I. Remington
  • Patent number: 7785983
    Abstract: A method for forming a semiconductor device includes providing a semiconductor substrate having a first region and a second region. The first region has one or more first elements and the second region has one or more second elements. The first elements are different from the second elements. A tile location and a first tile surface area for a tile feature on the semiconductor device is defined. An active semiconductor layer is formed over both the first region and the second region of the semiconductor substrate. A first trench is formed in the active semiconductor layer at the tile location using a negative tone mask. The first trench has a first depth and forms at least a portion of the tile feature. A second trench is formed in the active semiconductor layer using a positive tone mask. The second trench has a second depth different than the first depth.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: August 31, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Omar Zia, Ruiqi Tian