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Microchip Technology Inc patents


Recent patent applications related to Microchip Technology Inc. Microchip Technology Inc is listed as an Agent/Assignee. Note: Microchip Technology Inc may have other listings under different names/spellings. We're not affiliated with Microchip Technology Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "M" | Microchip Technology Inc-related inventors


 new patent  Programmable driver for single phase brushless dc (bldc) motor with hall sensor

A bldc motor drive system may be configured to provide a programmable pwm current waveform, e.g., a sinusoidal pwm current, to the motor. The drive system may include control electronics configured to generate a series of pwm control signals at a control signal frequency based on (a) the present motor speed data as determined by an angular timer, based on sensor-based rotor angle data, (b) a target motor speed, e.g., based on a thermal management unit, and (c) stored current waveform data defining a target current for each angular segment of the bdlc rotor, the target currents defining an non-rectangular waveform shape. ... Microchip Technology Inc

 new patent  Non-volatile flash memory cell

A method for manufacturing a flash memory device on a substrate may include: preparing the substrate with shallow trench isolation to define active sections; depositing a floating gate oxide layer on the prepared substrate; depositing a floating gate polysilicon layer on the floating gate oxide layer; polishing the floating gate polysilicon layer to isolate a plurality of floating gates above the active sections of the substrate; depositing a silicon nitride layer on top of the plurality of floating gates; patterning and etching the silicon nitride layer to create silicon nitride features; depositing a set of oxide spacers along sides of the silicon nitride features; implanting a source junction into the substrate beneath the individual floating gates; removing the floating gate polysilicon layer except where beneath individual oxide spacers, then removing the set of oxide spacers; depositing an inter-poly layer on top of the remaining floating gates; depositing a second polysilicon layer on top of the inter-poly layer; and patterning and etching the second polysilicon layer to separate the second polysilicon layer into word line devices and erase gates.. . ... Microchip Technology Inc

 new patent  Systems and methods for managing access to a vehicle or other object using environmental data

Systems and methods for controlling access to a vehicle or other object are provided. A vehicle-based authentication unit and mobile access device, e.g., a key fob, that wirelessly communicates with the vehicle-based authentication unit may each include environmental sensor(s) that collect respective environmental data local to the respective device/unit, e.g., gps data, local temperature data, local barometric pressure data, etc. ... Microchip Technology Inc

 new patent  Devices and methods for autonomous hardware management of circular buffers

An autonomous circular buffer is described in connection with the various embodiments of the present disclosure. An autonomous circular buffer controller may control movement of data between a user of the autonomous circular buffer and a peripheral. ... Microchip Technology Inc

 new patent  Host-detecting usb hub

An apparatus includes a processor and a machine-readable medium coupled to the processor and comprising instructions. The instructions, when loaded into the processor and executed, configure the processor to identify that a usb element has attached to a usb hub at a port, classify the usb element according to power operations of the usb element, and assign an upstream or downstream setting of the port based upon the classification of the usb element based on power operations of the usb element.. ... Microchip Technology Inc

Time-based delay line analog to digital converter

Embodiments of the present disclosure include a differential digital delay line analog-to-digital converter (adc). The adc includes differential digital delay lines, a circuit including a set of delay elements included in the differential digital delay lines, and another circuit including another set of delay elements included in the differential digital delay lines. ... Microchip Technology Inc

Fast transient response circuit

A circuit includes a reference voltage, a switched mode power supply (smps) loop filter circuit configured to provide an inductor current limit based on the reference voltage, and a trigger circuit configured to enable or disable the smps loop filter circuit. When the smps loop filter circuit is enabled, an output of the circuit is based on output of the smps loop filter circuit and output voltage of the smps. ... Microchip Technology Inc

Capacitor structure with an extended dielectric layer and method of forming a capacitor structure

A capacitor structure may include a lower conducting layer (e.g., poly 1 layer) and an upper conducting layer (e.g., overlying poly 2 layer), which define an anode and cathode, and a dielectric layer (e.g., an ono layer stack) located between the upper conducting layer and the lower conducting layer, wherein a portion of the dielectric layer (e.g., at least the nitride layer of the ono layer stack) extends beyond a lateral edge of the upper conducting layer. A method forming such capacitor structure may utilize a spacer adjacent the lateral edge of the upper conducting layer and over the first portion of the dielectric layer, performing an etch to remove a first portion of the dielectric layer but protect a second portion located below the spacer and extending laterally beyond an edge of the upper conducting layer.. ... Microchip Technology Inc

Load balancing in multi-port usb systems

An apparatus includes a processor, usb connectors, and variable resistors or variable current sources. The processor is configured to read and load instructions causing the processor to dynamically adjust a current consumed by a given connector through adjustment of a related variable resistor or variable current source.. ... Microchip Technology Inc

Circuits for bleeding supply voltage from a device in a power down state

Embodiments of the present disclosure include an apparatus. The apparatus includes a voltage supply line, a sense circuit coupled to the voltage supply line, and a bleeder circuit. ... Microchip Technology Inc

Time-based delay line analog-to-digital converter with variable resolution

Embodiments of the present disclosure include a differential digital delay line analog-to-digital converter (adc), comprising differential digital delay lines including series coupled delay cells, wherein a delay time of a first delay line is controlled by a first input of the adc and a delay time of a second delay line is controlled by a second input of the adc. The adc includes a pair of bypass multiplexers coupled at a predefined node location in the series coupled delay cells, latches each coupled with the series coupled delay cells, a converter circuit coupled with the plurality of latches configured to convert data from the latches into an output value of the adc, and logic circuits configured to select data from the series coupled delay cells to the latches depending on a selected resolution of the differential digital delay line analog-to-digital converter.. ... Microchip Technology Inc

Verification, validation, and applications support for analog-to-digital converter systems

A microcontroller includes an analog-to-digital (adc) controller circuit, an adc converter circuit, and a multiplexer configured to multiplex output of the adc converter circuit and a data source to the adc controller circuit.. . ... Microchip Technology Inc

System and method for gesture control

A system with a processing system, an input device integrated within the processing system and coupled with the processing system, and a sensor arrangement integrated with the processing system and configured to monitor an area above the input device, and a controller coupled with the sensor arrangement to detect predefined input actions, wherein the controller is coupled with the processing system and wherein the predefined input actions are combined with inputs from the input device.. . ... Microchip Technology Inc

Microcontroller with digital delay line analog-to-digital converters and digital comparators

Embodiments of the present disclosure include a microcontroller with a processor core, memory, and a plurality of peripheral devices including a differential digital delay line analog-to-digital converter (adc). The adc includes differential digital delay lines and circuit comprising a set of delay elements included in the differential digital delay lines configured to generate data representing an analog to digital conversion of an input. ... Microchip Technology Inc

06/28/18 / #20180181526

Virtual general purpose input/output for a microcontroller

A microcontroller includes a general purpose input/output (gpio) port having a plurality of bits coupled to a plurality of external pins; a first set of registers for providing at least one of first control and data input/output functionality of the gpio port; a second set of registers for providing at least one of second control and data input/output functionality of the gpio port; and a multiplexer and associated select register for controlling the multiplexer to control said gpio port through either said first or second register set.. . ... Microchip Technology Inc

06/21/18 / #20180172480

Detection of defects in motor position decoder system

Systems and methods for processing sensor information obtained from a coding wheel of a motor may detect defects in the sensor information caused by contamination or damage of any of the angular step markers, index marker, and/or blank space on the tracks of the coding wheel. A step counter counts toward an overflow value representing the number of angular step markers on the coding wheel. ... Microchip Technology Inc

05/24/18 / #20180145171

Field effect transistor (fet) or other semiconductor device with front-side source and drain contacts

An integrated circuit (ic) structure may include one or more trench-based semiconductor devices, e.g., field-effect transistors (trench fets), having a front-side drain contact. Each semiconductor device may include an epitaxy layer, a doped source region in the epitaxy layer, a front-side source contact coupled to the source region, a poly gate formed in a trench in the epitaxy layer, and a front-side drain contact extending through the poly gate trench and isolated from the poly gate. ... Microchip Technology Inc

05/24/18 / #20180145170

Method of forming a field-effect transistor (fet) or other semiconductor device with front-side source and drain contacts

A method is provided for forming an integrated circuit (ic) structure including trench-based semiconductor devices, e.g., trench fets, having front-side drain contacts. The method may include forming an epitaxy region, forming a poly gate trench in the epitaxy region, forming a drain contact trench through the poly gate trench and extending below the poly gate trench, forming a poly gate in the poly gate trench, forming a front-side drain contact in the drain contact trench, and forming a source region in the epitaxy region adjacent the poly gate. ... Microchip Technology Inc

05/10/18 / #20180131305

System and method for starting synchronous motors

To avoid control failure resulting from startup of a pmsm that is windmilling, initial speed and position are determined before startup. A controller uses a foc routine having a speed pi control loop, field-weaken control, a current pi control loop, and a speed observer. ... Microchip Technology Inc

05/03/18 / #20180121380

System arbiter with programmable priority levels

A programmable system arbiter for granting access to a system bus among a plurality of arbiter clients and a central processing unit is disclosed. The programmable system arbiter may include one or more interrupt priority registers, each of the one or more interrupt priority registers associated with an interrupt type; and system arbitration logic operable to arbitrate access to the system bus among the plurality of arbiter clients and the cpu based at least on an analysis of a programmed priority order, the programmed priority order comprising a priority order for each of the plurality of arbiter clients, each of a plurality of operating modes of the central processing unit, and each of the one or more interrupt types.. ... Microchip Technology Inc

05/03/18 / #20180120355

Multiple channel capacitive voltage divider scanning method and apparatus

Relative capacitance of a plurality of capacitive sensors may be monitored by using only one adc conversion. A plurality of capacitive sensors individually charges a sample and hold capacitor. ... Microchip Technology Inc

04/19/18 / #20180109197

Start-up controller for a power converter

Power converters, e.g., ac/dc and dc/dc, typically have unique circuitry for a proper graceful start-up and to develop correct operating voltage biases. Typically this unique circuitry is incorporated in a primary-side controller. ... Microchip Technology Inc

04/12/18 / #20180102180

High voltage bootstrap sampling circuit

A bootstrapped sampling switch may be used at lower supply voltages due to its high linearity, wherein the sampled voltage may be substantially higher than the supply voltage. A 2.7 volt or lower dc supply may be used with this sampling switch to sample a much higher voltage. ... Microchip Technology Inc

04/12/18 / #20180101497

Flexconnect disconnect detection

A usb hub includes a plurality of downstream ports; at least one dual mode port, the dual mode port configured to be switchable from a downstream port to an upstream port; and host detection circuitry for detecting whether, when operating as an upstream port, a host is connected.. . ... Microchip Technology Inc

03/29/18 / #20180090460

Wafer level package and method

A copper pillar bump semiconductor packaging method patterns an organic insulation layer formed under the copper pillar bumps to areas surrounding and in the vicinity of the copper pillar bumps only. The organic insulation layer, typically a thin film polymer layer, acts as a barrier layer for the copper pillar bumps to protect the semiconductor wafer during the copper pillar flip chip bonding process. ... Microchip Technology Inc

03/29/18 / #20180088152

Current sense amplifier architecture and level shifter

A high side current sensing amplifier architecture is simplified and improved over prior art current sensing amplifier circuits by using chopping only, without requiring auto-zeroing, and by using a simpler (and faster) switched capacitor filter instead of an auto-zeroing integrator filter. Also, vip (positive dc sense node) is merged with the vddhv (power supply) node, such that the integrated circuit package requires only a single node (package pin) to accommodate both the vip and vddhv connections for the current sensing amplifier circuit, resulting in being able to use a smaller integrated circuit package. ... Microchip Technology Inc

03/08/18 / #20180067875

Universal serial bus smart hub

A usb smart hub may provide enhanced battery charging, data storage security, vendor matching, device authentication, data capture/debug, and role switching. The smart hub may include an upstream port, a plurality of downstream ports, a processor, and a memory coupled to the processor for storing usb host stack code and configuration parameters. ... Microchip Technology Inc

03/01/18 / #20180059747

Predictive thermal control management using temperature and power sensors

Embodiments of the present disclosure include a microcontroller configured to cool an electronic device. The microcontroller is configured to receive a power consumption value of the electronic device, determine, based on the power consumption value and a stored previous power consumption value, a change value representing an amount that power consumption of the electronic device changed from a previous power consumption of the electronic device, determine an output cooling control value based at least in part on the change value, and control an output for cooling the electronic device using the output cooling control value.. ... Microchip Technology Inc

03/01/18 / #20180059171

Systems and methods for storing frequency information for system calibration/trimming

Embodiments of the present disclosure include a microcontroller with a frequency test circuit, a device-under-test (dut) input, and a calculation engine circuit. The calculation engine circuit is configured to compare a measured frequency from the frequency test circuit measured from the dut input to a reference frequency stored in memory, and, based on the comparison, adjust frequency of the dut generating the dut input.. ... Microchip Technology Inc

02/22/18 / #20180054209

Adc controller with temporal separation

Embodiments of the present disclosure may include an adc circuit including channel register sets, a conversion request flip-flop, a priority encoder circuit, and a controller circuit. The controller circuit may be configured to receive a conversion request signal, latch the conversion request signal into the conversion request flip-flop, determine by the priority encoder circuit a highest priority pending conversion request, and output an active channel identifier code. ... Microchip Technology Inc

02/22/18 / #20180052799

Usb multi-host endpoint reflector hub

A multi-host endpoint reflector enables a method of communication between multiple usb hosts through the usb devices connected to them, where data from one usb host is routed across the usb devices between endpoints of complimentary directions to one or more additional usb hosts. The multi-host endpoint reflector may be integrated with a usb hub controller to form a usb compound device to create a multi-host endpoint reflector hub. ... Microchip Technology Inc

02/08/18 / #20180041785

Network traffic controller (ntc)

A network device (nd) includes a first interface controller operable to transfer data between the nd and a host processing unit (host), a second interface controller operable to transfer data between the nd and the host, a network interface configured to interface the nd with a network, and a control unit operable to: receive incoming data from the network, process the incoming data, and transmit the processed incoming data to the host through the second interface controller; or, receive outgoing data from the host through the second interface controller, process the received outgoing data, and transmit the processed outgoing data to the network. The first interface controller, the control unit, and the network interface are together operable to enable the host to transmit and/or receive other data to and/or from the network and the first interface controller. ... Microchip Technology Inc

01/25/18 / #20180026648

Time-based delay line analog comparator

Embodiments of the present disclosure include voltage comparators. The voltage comparators may include a first input configured to receive a first analog voltage, a second input configured to receive a second analog voltage, a first digital delay line configured to propagate the first analog voltage through a first delay circuit and the second analog voltage through a second circuit, and an output circuit configured to provide a comparator output based upon whether values representing the first analog voltage or the second analog voltage propagated faster through the first digital delay line. ... Microchip Technology Inc

01/25/18 / #20180026596

Selectable programmable gain or operational amplifier

An integrated circuit amplifier configurable to be either a programmable gain amplifier or an operational amplifier comprises two output blocks, one output block is optimized for programmable gain amplifier operation, and the other output block is optimized for operational amplifier applications. A common single input stage, input offset calibration and bias generation circuits are used with either amplifier configuration. ... Microchip Technology Inc

01/25/18 / #20180026534

Controlled adaptive power limiter

A power limiter for a switched mode power supply includes an operational amplifier and a comparator circuit. The operational amplifier is configured to receive an input voltage supplied to the smps as a first input and a reference voltage as a second input. ... Microchip Technology Inc

01/25/18 / #20180024171

Measuring output current in a buck smps

A sample and hold circuit takes a sample of the current flowing through an inductor of a buck switched-mode power supply (smps) at substantially the middle of the low side portion (50 percent point during low side switch on) of the pulse width modulation (pwm) period. This sample of the current through the smps inductor during the low side on 50% point may be considered as the “average” or “dc output” current of the smps, and taken every time at precisely the same low side on 50%. ... Microchip Technology Inc

01/11/18 / #20180013605

Digital compensation of iq coupling in communication receivers

A receiver circuit includes a conversion circuit configured to down-convert a received radio-frequency signal to a baseband signal, an analog-to-digital converter configured to sample the baseband signal into a sampled signal, a fast fourier transform (fft) circuit configured to perform an fft on the sampled signal, and a digital compensation circuit configured to compensate for iq distortion in a frequency domain.. . ... Microchip Technology Inc

01/11/18 / #20180013591

Channel estimation in ofdm communication systems

Embodiments of the present disclosure include an ofdm receiver circuit, which includes an fft circuit configured to calculate an fft of a plurality of sample values received by the receiver circuit, and a smoothing circuit configured to identify equalizer coefficients for the sample values by truncating portions of an impulse response of the fft.. . ... Microchip Technology Inc

01/04/18 / #20180006605

Integrated circuit crystal oscillator having digital automatic gain control comprising oscillation detection and amplitude control loops

A crystal oscillator is coupled to a digital automatic gain control (agc) having oscillation detection and amplitude control loops. The oscillation detection loop may increase the transconductance (gm) of the oscillator transistor until oscillation is detected therefrom. ... Microchip Technology Inc

12/14/17 / #20170358271

Multi-mode low current dual voltage self-regulated lcd pump system

A bias voltage generator circuit may include a mode control circuit, a clock generator circuit coupled with the mode control unit and configured to generate a plurality of clock signals, and a charge pump circuit configured to receive the clock signals. The charge pump circuit may be coupled with the mode control circuit and operable to output selectable output voltages according to input from the mode control circuit. ... Microchip Technology Inc

12/07/17 / #20170350770

Temperature sensor peripheral having independent temperature coefficient and offset adjustment programmability

A temperature sensor peripheral generates an output voltage that is proportional to temperature, whose temperature coefficient can be adjusted to any desired value, whose temperature coefficient can be either positive or negative, whose room temperature voltage can be adjusted to any desired value, and whose temperature coefficient and room temperature voltage adjustments are independent from one another.. . ... Microchip Technology Inc

11/16/17 / #20170329884

Scan logic for circuit designs with latches and flip-flops

Embodiments of the present disclosure may include a system for scanning a circuit, the embodiments including flip-flops, latches interleaved between the flip-flops, multiplexers configured to propagate scan data between the flip-flops and latches, and scan logic configured to control the multiplexers to load test data into the flip-flops and latches. A first pair of latches are interleaved between a first pair of flip-flops.. ... Microchip Technology Inc

11/16/17 / #20170329611

Enhanced low cost microcontroller

An 8-bit microprocessor has a program memory having a 16-bit instruction word size and a data memory having an 8-bit data size. An instruction word has a payload size for an address of up to 12 bits. ... Microchip Technology Inc

10/26/17 / #20170310324

Seamless switching control for low power battery backup system

A circuit for providing back-up power includes a switching circuit configured to be coupled to a first power source and a second power source. The circuit includes a domain voltage level monitor circuit coupled with the first power source and the second power source and with output of the switching circuit. ... Microchip Technology Inc

10/26/17 / #20170310278

Hybrid rc/crystal oscillator

An oscillator includes a tunable oscillator, a phase detector circuit communicatively coupled with an output of the tunable oscillator and an input to the oscillator, and an oscillator controller circuit configured to adjust frequency of the tunable oscillator based upon phase detection between output of the tunable oscillator and output of an external resonant element received at the input to the oscillator.. . ... Microchip Technology Inc

10/12/17 / #20170295618

Multiple led string dimming control

An integrated circuit device is configured to drive multiple led strings. The device includes a switch mode power supply control circuit configured to generate primary and secondary power transistor control signals and receive at least one current sense signal and an output voltage sense signal. ... Microchip Technology Inc

10/12/17 / #20170294921

Time-based delay line analog-to-digital converter with variable resolution

Embodiments of the present disclosure include a differential digital delay line analog-to-digital converter (adc), comprising differential digital delay lines including series coupled delay cells, wherein a delay time of a first delay line is controlled by a first input of the adc and a delay time of a second delay line is controlled by a second input of the adc. The adc includes a pair of bypass multiplexers coupled at a predefined node location in the series coupled delay cells, latches each coupled with the series coupled delay cells, a converter circuit coupled with the plurality of latches configured to convert data from the latches into an output value of the adc, and logic circuits configured to select data from the series coupled delay cells to the latches depending on a selected resolution of the differential digital delay line analog-to-digital converter.. ... Microchip Technology Inc

10/12/17 / #20170294920

Microcontroller with digital delay line analog-to-digital converter

Embodiments of the present disclosure include a microcontroller with a processor, memory, and peripheral devices including a differential digital delay line analog-to-digital converter (adc). The adc includes differential digital delay lines, a circuit including a set of delay elements included in the differential digital delay lines, and another circuit including another set of delay elements included in the differential digital delay lines. ... Microchip Technology Inc

10/12/17 / #20170294919

Time-based delay line analog to digital converter

Embodiments of the present disclosure include a differential digital delay line analog-to-digital converter (adc). The adc includes differential digital delay lines, a circuit including a set of delay elements included in the differential digital delay lines, and another circuit including another set of delay elements included in the differential digital delay lines. ... Microchip Technology Inc

10/12/17 / #20170294917

Microcontroller with digital delay line analog-to-digital converters and digital comparators

Embodiments of the present disclosure include a microcontroller with a processor core, memory, and a plurality of peripheral devices including a differential digital delay line analog-to-digital converter (adc). The adc includes differential digital delay lines and circuit comprising a set of delay elements included in the differential digital delay lines configured to generate data representing an analog to digital conversion of an input. ... Microchip Technology Inc

10/12/17 / #20170294909

Power-up based integrated circuit configuration

An integrated circuit having a plurality of selectable modes, functions and/or characteristics may be configured at the time of product manufacture by providing an appropriate resistance value pull-up resistor at an external connection (pin) of the integrated circuit package. At least one external connection (pin) may be used for such configuration of the integrated circuit. ... Microchip Technology Inc

10/12/17 / #20170294788

Balanced battery charging system

A multi-cell battery pack charging system adjusts each battery cell's charging current to synchronize the completion of charge. The battery pack is charged as a whole, and need only be charged once, and without requiring charge shuttling, resistive charge balancing or inductive charge dumping. ... Microchip Technology Inc

10/12/17 / #20170294367

Flat no-leads package with improved contact pins

According to an embodiment of the present disclosure, a method for manufacturing an integrated circuit (ic) device may include mounting an ic chip onto a center support structure of a leadframe. The leadframe may include: a plurality of pins extending from the center support structure; a groove running perpendicular to the individual pins of the plurality of pins around the center support structure; and a bar connecting the plurality of pins remote from the center support structure. ... Microchip Technology Inc

10/12/17 / #20170293362

Sensor design for enhanced touch and gesture decoding

A sensor arrangement for capacitive touch and non-touch detection has a transmission electrode and a predefined number of receiving electrodes coupled with an evaluation unit. The evaluation unit operates in a non-touch detection mode and in a touch detection mode, wherein the transmission electrode generates an alternating electric near field, and in the non-touch detection mode, the evaluation unit evaluates signals from the receiving electrodes to determine non-touch gestures or a three-dimensional position of an object. ... Microchip Technology Inc

10/05/17 / #20170287850

Stacked die ground shield

The present disclosure relates to semiconductor devices. Embodiments of the teachings thereof may include processes for manufacturing of semiconductor devices and the devices themselves. ... Microchip Technology Inc

10/05/17 / #20170287835

Combined source and base contact for a field effect transistor

The present disclosure relates to semiconductor devices. The teachings thereof may be embodied in metal oxide semiconductor field effect transistors (mosfet) and methods for their manufacture. ... Microchip Technology Inc

10/05/17 / #20170287834

Contact expose etch stop

The present disclosure relates to semiconductor devices and the teachings thereof may be embodied in metal oxide semiconductor field effect transistors (mosfet). Some embodiments may include a power mosfet with transistor cells, each cell comprising a source and a drain region; a first dielectric layer disposed atop the transistor cells; a silicon rich oxide layer on the first dielectric layer; grooves through the multi-layered dielectric, each groove above a respective source or drain region and filled with a conductive material; a second dielectric layer atop the multi-layered dielectric; openings in the second dielectric layer, each opening exposing a contact area of one of the plurality of grooves; and a metal layer disposed atop the second dielectric layer and filling the openings. ... Microchip Technology Inc

10/05/17 / #20170285866

Water robustness and detection on capacitive buttons

A method for touch detection includes identifying a high-pass filtered sequence from a plurality of sensor measurements, accumulating a number of samples from a first high-pass filtered sequence into an accumulated value, comparing the first accumulated value against a threshold of accumulated values, and, based upon a determination whether the accumulated value is greater than the threshold of accumulated values, identify whether the sensor has been approached.. . ... Microchip Technology Inc

09/28/17 / #20170279423

Class ab common-source amplifier with constant transconductance

An ultrasound probe buffer is provided. The ultrasound probe buffer may include a high impedance amplifier having a common-source core stage with series-series local feedback. ... Microchip Technology Inc

09/28/17 / #20170279263

High voltage transmit/receive switch with standard bcd process

An analog transmit/receive switch and voltage detection circuit that do not require depletion mode devices are provided. The switch may be configured to operate in a receive mode and a protection mode. ... Microchip Technology Inc

09/21/17 / #20170269741

Compensation of a target objects coupling to feeding lines in capacitive sensing system

An input device has one or more electrodes configured for capacitive sensing, an electronic circuit, one or more conductive feed line(s) connecting the one or more electrode(s) with the electronic circuit, wherein the device is configured to increase or decrease a signal received from at least one of the electrodes through an associated feed line in function of at least one other signal from another electrode.. . ... Microchip Technology Inc

09/14/17 / #20170264203

Buck-boost controller achieving high power factor and valley switching

A high power-factor buck-boost converter having a rectified low-frequency ac line voltage input and a dc output is provided. The converter may include a magnetic element, a controlled switch having a gate terminal and a drain terminal that is coupled to the magnetic element, a rectifier diode coupled to the magnetic element, an output smoothing capacitor coupled to the rectifier diode, and a control circuit having an output coupled to the gate terminal of the controlled switch for repeatedly turning the controlled switch off for a first time duration and on for a second time duration. ... Microchip Technology Inc

09/14/17 / #20170261379

Digital temperature sensor with integrated timer and burst mode

An integrated temperature sensor device has a temperature sensor providing an analog signal corresponding to an ambient temperature, an analog-to-digital converter coupled to the sensor conditioning circuit and receiving the analog temperature signal, and a timer and control circuit which is operable to be configured to control the temperature sensor device to perform a sequence of temperature measurements and shut-down time periods, wherein multiple temperature measurements are taken during the measurement period, wherein the timer and control circuit is further operable to be programmed to set the number of temperature measurements and the length of the shut-down period.. . ... Microchip Technology Inc

09/07/17 / #20170256469

Interconnect monitor utilizing both open and short detection

The present disclosure relates to semiconductor manufacturing and the teachings of the present disclosure may be embodied in a semiconductor chip with an interconnect monitor. Some embodiments may include arrays of diodes on the semiconductor chip; each diode with a stack of vertical interconnects and metal contacts, the stack and the diode connected in series and control mechanisms for addressing the diodes. ... Microchip Technology Inc

09/07/17 / #20170254900

Core independent ultrasonic proximity sensing peripheral

A proximity sensing function is implemented using a collection of core independent peripherals (cips) in a microcontroller without software overhead to the central processor during operation thereof. A pulse width modulation (pwm) peripheral generates a high frequency drive signal that is on for a short duration to an ultrasonic transmitting transducer. ... Microchip Technology Inc

08/17/17 / #20170235475

Continuous circle gesture detection for a sensor system

A method for detecting a continuous circle gesture, has the following steps: receiving vectors representative of an object movement by a object detection unit; determining from the received sequence velocity vectors a sequence of velocity vectors or an approximation thereof; estimating an angle between subsequent velocity vectors; and determining a rotation direction.. . ... Microchip Technology Inc

08/10/17 / #20170229340

Method of forming shallow trench isolation (sti) structures

A method of forming a trench isolation (e.g., an sti) for an integrated circuit includes forming a pad oxide layer and then a nitride layer over a semiconductor substrate, performing a trench etch through the structure to form a trench, depositing a trench oxide layer over the structure to form a filled trench, depositing a sacrificial planarizing layer, which is etch-selective to the trench oxide layer, over the deposited oxide, performing a planarizing etch process that removes the sacrificial planarizing layer and decreases surface variations in an upper surface of the trench oxide layer, performing an oxide etch process that is selective to the trench oxide layer to remove remaining portions of the trench oxide layer outside the filled trench, and removing the remaining nitride layer such that the remaining oxide-filled trench defines a trench isolation structure that projects above an exposed upper surface of the semiconductor substrate.. . ... Microchip Technology Inc

08/03/17 / #20170220124

Human interface device and method

A method for state tracking based gesture recognition engine for a sensor system has the steps of: defining a plurality of sequential states of a finite-state machine, determining a sequence progress level (spl) for each state, mapping a state probability distribution to a (single) spl on run-time, and utilizing the mapped spl estimate as an output value of the sensor system.. . ... Microchip Technology Inc

07/27/17 / #20170212619

Method and system for sensing impedance change in the local space between electrodes

A receiver stage of a sensor system includes a receiver electrode and a loop filter. The loop filter is configured to activate electrical oscillation and thus the receiver stage when a capacitance measurement reaches a threshold and issue the capacitance measurement upon activation of the receiver stage. ... Microchip Technology Inc

07/27/17 / #20170212599

Proximity activated gesture

A proximity-activated gesture circuit includes an activation receiver electrode, a transmitter electrode, additional receiver electrodes, a control circuit, and a signal processor circuit. The control circuit is configured to activate the transmitter electrode and additional receiver electrodes when a capacitance measurement by the activation receiver electrode reaches a threshold. ... Microchip Technology Inc

07/20/17 / #20170208609

Time triggered communication channel in a synchronous network

Systems and method for a time-triggered communication channel in a synchronous network are disclosed. The systems and methods may include communicating in a repeated cycle wherein each of the plurality of nodes has a dedicated slot, wherein a cycle comprises n subsequent slots, and wherein each slot comprises a plurality of frames, defining a centralized schedule that associates each node to an associated slot comprising a start frame and an end frame, and transmitting by each node only during the associated slot comprising said start frame.. ... Microchip Technology Inc

07/20/17 / #20170202465

Method, system and apparatus for measuring multiple signals in a body

A pulse oximetry measurement system uses a pseudo-random noise generator to stimulate one or more light emitting diodes (leds). The light amplitudes from these leds, after passing through a part of a body, are detected by a phototransistor or photodiode and digitized with an analog-to-digital converter (adc). ... Microchip Technology Inc

06/22/17 / #20170179226

Ultrasound t/r isoltation disolator with fast recovery time on soi

A semiconductor disolator device is provided. The device may include a silicon-on-insulator (soi) substrate, a body layer disposed on the soi substrate, a first p-type well disposed on the body layer, a first n-type well disposed on the first p-type well to form a first p-n junction, and a second p-type well that is spaced a predetermined distance from at least one of the first p-type well and first n-type well.. ... Microchip Technology Inc

06/22/17 / #20170177523

Method and apparatus for tuning usb power delivery signals

A usb interface to provide power delivery negotiated through a dedicated transmission channel includes a transmitter circuit including a digital-to-analog converter having an output coupled with an input of a transmission filter, a receiver circuit including an analog-to-digital converter having an input coupled with an output of a receiving filter, and a switching circuit configured in an operating mode of the usb interface to connect an output of the transmission filter and an input of the receiving filter to a connection node of the dedicated transmission channel.. . ... Microchip Technology Inc

06/22/17 / #20170176225

System and method for reducing noise in a sensor system

A sensor system has an acquisition unit comprising an analog to digital converter generating a series of digital sensor signals, a first evaluation unit receiving the series of digital sensor signals for evaluation, wherein the first evaluation unit generates output signals that correspond to a sensor event, and a second evaluation unit independent from said first evaluation unit receiving the series of digital sensor signals. At least a first and second series of digital sensor signals is processed by the second evaluation unit to generate a control signal that is configured to select a sampling frequency controlling the analog-to-digital converter, wherein the first and second series of digital sensor signals are sampled at different sampling frequencies.. ... Microchip Technology Inc

06/15/17 / #20170170303

Method of forming a polysilicon sidewall oxide region in a memory cell

Methods of fabricating a memory cell of a semiconductor device, e.g., an eeprom cell, having a sidewall oxide are disclosed. A memory cell structure may be formed including a floating gate and an ono film over the conductive layer. ... Microchip Technology Inc

06/15/17 / #20170168981

Spi interface with slave-select fault detection and status signal

A serial peripheral interface (spi) module includes a transceiver including a clock line, a data line and at least one slave select line. The module also includes an interface circuit configured to monitor the slave select line and assert a fault based upon an incorrect de-assertion of the slave select line.. ... Microchip Technology Inc

06/15/17 / #20170168980

Spi interface with automatic slave select generation

A serial peripheral interface (spi) module, comprising a transceiver, the transceiver including a clock line, a data line and at least one slave select line. The spi also comprises an interface circuit configured to operate in an automatic slave select mode, wherein the interface circuit is configured to automatically assert the slave select line at least one clock before a first clock edge is generated.. ... Microchip Technology Inc

06/15/17 / #20170168096

Voltage measurement circuit

A method for measuring a voltage using a capacitive voltage divider (cvd) and an analog-to-digital converter includes the steps of measuring a bandgap or reference voltage and determining a first code value of the bandgap or reference voltage, charging a first capacitor to a voltage to be measured and determining a second code value of voltage of the first capacitor, charging a second capacitor to a second known voltage and determining a third code value of voltage of the second capacitor, and determining the voltage to be measured by applying the first, second, and third code values.. . ... Microchip Technology Inc

06/08/17 / #20170164437

Current control circuit for linear led driver

Employed within an led driver operating from the ac power line, the invention controls both input current and output power. With this regulation circuit, input current appears purely resistive, precisely tracking the input voltage waveshape. ... Microchip Technology Inc

06/08/17 / #20170163190

Stepper trajectory driver

A stepper control circuit includes numerical controlled oscillators configured to provide step signals for multiple axes of stepper motor movement. The numerical controlled oscillators are configured to be operated at a same frequency provided by a synchronized clock signal.. ... Microchip Technology Inc

06/08/17 / #20170162648

Capacitor formed on heavily doped substrate

The teachings of the present disclosure may be applied to the manufacture and design of capacitors. In some embodiments of these teachings, a capacitor may be formed on a heavily doped substrate. ... Microchip Technology Inc

06/08/17 / #20170158429

Reticle rack system

The present disclosure relates to semiconductor manufacturing, in particular to reticle rack systems. The teachings of the present disclosure may be embodied in a reticle rack unit including a frame with four uprights and multiple crossbars and four turnstiles. ... Microchip Technology Inc

05/18/17 / #20170139540

Analog elimination of ungrounded conductive objects in capacitive sensing

In a method for performing a touch determination with a capacitive sensor, a self capacitance measurement of a capacitive sensor is initiated, wherein at the same time a mutual capacitance measurement including the capacitive sensor is performed. Such a method can be performed such that the self capacitance measurement and the mutual capacitance measurement differentially cancel with ungrounded conductive objects approaching or touching the capacitive sensor and additively combine for grounded objects approaching or touching the capacitive sensor.. ... Microchip Technology Inc

04/13/17 / #20170104481

Optimized cmos analog switch

An improved analog switch for use in an ultrasound elastography probe is disclosed. The improved analog switch results in less heat dissipation compared to prior art analog switches.. ... Microchip Technology Inc

04/13/17 / #20170103599

Decryption of access codes of diverse protocols in barrier operator systems

Disclosed are alternate embodiments of various components of a barrier operator system. And methods of operation, including of the mechanical drive subsystem with segmented and self-locking rail unit, rail mounting supports, belt and chain drive tensioning, and drive assembly carriage and interface; the electronics and software routines for controlled operation of the various barrier operator functions; wall console communications with the barrier operator; encryption and decryption of access codes; establishment and monitoring of travel limits and barrier speed and force profiles; thermal protection of barrier operator drive motors; and establishment and control of communications from the barrier operator to accessories by way of a wireless adapter.. ... Microchip Technology Inc

04/13/17 / #20170102815

Capacitance measurement device with reduced noise

A method or sensor arrangement for providing capacitive sensor detection with at least one capacitive sensor comprises a transmitting electrode and a receiving electrode. A stimulus at the transmitting electrode is generated and a signal is received from the receiving electrode and data packets are generated, each packet comprising a plurality of samples. ... Microchip Technology Inc

04/06/17 / #20170099708

Ripple reduction circuit for sequential linear led drivers

A ripple reduction circuit is provided. The ripple reduction circuit may include a ripple capacitor configured to drive at least a first segment of a string of light emitting diodes (leds), a first diode having an anode coupled to the ripple capacitor, and a cathode configured to be coupled to an input end of the first led segment, a second diode having a cathode coupled to the ripple capacitor and the anode of the first diode, and an anode configured to be coupled between the first led segment and a second led segment of the string of leds, a third diode having an anode coupled to the ripple capacitor, and a cathode configured to be coupled to a last led segment of the string of leds, and a fourth diode having a cathode coupled to the ripple capacitor and the anode of the third diode.. ... Microchip Technology Inc

03/30/17 / #20170094733

Commutation circuit for sequential linear led drivers

A sequential linear led driver circuit is provided. The sequential linear led driver circuit may include a plurality of current sinks, wherein each of the plurality of current sinks is configured to be coupled to a segment of a string of light-emitting diodes (leds), and a voltage divider that generates a plurality of reference voltages, wherein each of the plurality of reference voltages is applied to a respective current sink of the plurality of current sinks. ... Microchip Technology Inc

03/30/17 / #20170093313

Linear hall effect sensors for multi-phase permanent magnet motors with pwm drive

Low cost linear hall effect sensors are used for determining motor shaft positions and generating voltages proportional to the motor shaft positions. The voltages from the linear hall effect sensors are compared to a triangle waveform and pwm signals are generated therefrom. ... Microchip Technology Inc

03/30/17 / #20170090022

Core independent peripheral based ultrasonic ranging peripheral

A ranging function is implemented using a collection of core independent peripherals (cips) in a microcontroller without software overhead to the central processor during operation thereof. A pulse width modulation (pwm) peripheral generates a high frequency drive signal, a counter to set the duration of the pwm drive signal (pulse), and a second timer coupled to a comparator to measure the time it takes to receive back a reflection of the ranging signal from an object. ... Microchip Technology Inc

02/23/17 / #20170054376

Power converter with sleep/wake mode

Offline power converters draw very small amounts of power when unloaded or inactive (no load demand), power consumption may be further reduced by allowing the start-up controller and/or secondary-side controller to enter into a sleep mode (functions within the controllers shut down). When the energy storage capacitors for either the start-up controller or the secondary-side controller reach a low state-of-charge, either controller can wake itself and the other controller, thereby allowing the power converter to become active until both energy storage capacitors are refreshed enough for the controllers to go back into a low power sleep mode. ... Microchip Technology Inc

02/23/17 / #20170053841

Single-wafer real-time etch rate and uniformity predictor for plasma etch processes

The present disclosure relates to semiconductor manufacturing, in particular to a real-time method for qualifying the etch rate for plasma etch processes. A method for testing a semiconductor plasma etch chamber may include: depositing a film on a substrate of a wafer, the wafer including a center region and an edge region; depositing photoresist on top of the film in a pattern that isolates the center region from the edge region of the wafer; and performing an etch process on the wafer that includes at least three process steps. ... Microchip Technology Inc

02/23/17 / #20170052799

Integrated circuit device with selectable processor core

An integrated circuit device includes a first processing core operable to process a first instruction set, a second processing core operable to process a second instruction set different from the first instruction set, a plurality of peripheral devices, a memory and a switching circuit configured to couple the memory and the plurality of peripheral devices with either the first processing core or the second processing core depending on a configuration setting of the integrated circuit device.. . ... Microchip Technology Inc

02/09/17 / #20170041044

Coaxial data communication with reduced emi

Data communication having improved electromagnetic interference (emi) rejection when communicating through a coaxial cable is provided by using differential transmission and/or reception through a common-mode choke and a dissipative element resulting in extremely low radiated emissions and high immunity to external radiation interference in a low-cost way.. . ... Microchip Technology Inc

02/09/17 / #20170040977

Digital filter with confidence input

A digital filter has an assigned filter function with assigned filter coefficients, an input receiving input samples, another input receiving confidence values, and an output. Each input sample value is associated to an input confidence value, wherein the filter output depends on the input samples, the input confidence values as well as the filter coefficients. ... Microchip Technology Inc

02/02/17 / #20170031750

Zero overhead code coverage analysis

An integrated circuit includes comprising a cyclic redundancy check (crc) circuit configured to read data identifying an execution path from code executed by a processor, determine a crc check value for the data, and, based upon the crc check value, determine whether the execution is valid.. . ... Microchip Technology Inc

01/26/17 / #20170025388

Backside stacked die in an integrated circuit (ic) package

An integrated circuit (ic) device may include a substrate including a first mounting area and a ground ring, a first integrated circuit die attached to the first mounting area, a die attach paddle mounted onto the ground ring and extending above the first integrated circuit die, and a second integrated circuit die mounted on a second mounting area, wherein the die attach paddle defines the second mounting area above the first integrated circuit die. The second integrated circuit die may have a backside oriented toward the substrate and connected to ground.. ... Microchip Technology Inc

01/26/17 / #20170024997

Smart wireless asset tracking

Systems and methods for localizing a bad condition in a crowded asset environment include providing a plurality of wireless transceivers associated with a sensor monitoring a condition of an asset, wherein each of the plurality of wireless transceivers in a long range operating mode adjusts the transmission power to a high output power, monitoring the conditions of the assets using the long range operating mode with a sensor receiver, communicating an alarm to the sensor receiver by at least one of the plurality of wireless transceiver, transmitting by the sensor receiver a command to all of the plurality of wireless transceivers to switch to a low transmission power output to allow a localization of the item, switching each of the plurality of wireless transceivers to operate in a localization operating mode, wherein the transmission power is set to a low output power, and localizing the sensor generating the alarm.. . ... Microchip Technology Inc

01/26/17 / #20170024344

Method and system for usb 2.0 bandwidth reservation

Systems and methods for reserving bandwidth in a usb hub are disclosed. The systems and methods may include receiving data from at least one downstream endpoint in a buffer, identifying a current capacity of the buffer, comparing the current capacity of the buffer to a buffer threshold, generating an output based at least on the comparison, based at least on the output, dynamically throttling at least one low-throughput endpoint, and allocating a predefined bandwidth to a usb device that has a predetermined bandwidth requirement by providing bandwidth to the usb device available from the throttle of the at least one low-throughput endpoints.. ... Microchip Technology Inc

01/19/17 / #20170017584

Spi interface with less-than-8-bit bytes and variable packet size

A synchronous serial peripheral device has a transmission unit coupled with a data output line and a clock unit coupled with a clock line. The serial peripheral device transmits a minimum of a single transmission, wherein in a first operating mode the transmission unit and the clock unit are configurable to perform a data transmission with a data length that can be defined to be between one (1) and eight (8) bit.. ... Microchip Technology Inc

01/19/17 / #20170017431

Method for enlarging data memory in an existing microprocessor architecture with limited memory addressing

A method for expanding a data memory for a microprocessor architecture which uses a bank select accessing scheme for accessing data memory which is divided into a plurality of memory banks. A bank select register is configured to select a memory bank and the microprocessor architecture has an instruction set with a dedicated instruction for selecting a memory bank. ... Microchip Technology Inc

01/05/17 / #20170005030

Flat no-leads package with improved contact pins

According to an embodiment of the present disclosure, a leadframe for an integrated circuit (ic) device may comprise a center support structure for mounting an ic chip, a plurality of pins extending from the center support structure, and a bar connecting the plurality of pins remote from the center support structure. Each pin of the plurality of pins may include a dimple.. ... Microchip Technology Inc

01/05/17 / #20170003735

Combined power supply and input/output system with boost capability

A combined power and input/output system for an electronic device includes a host system; a target system operably coupled to the host system via a combined power and i/o line; and a power boost circuit in the target system for enabling a higher voltage target device.. . ... Microchip Technology Inc








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