21results about How to "Reduced pin count" patented technology

The embodiment of the invention provides a display panel and a display device, the display panel comprises a display area and a non-display area, and the non-display area surrounds at least part of the display area; the display area comprises a plurality of pixel circuits, the non-display area comprises a plurality of groups of shift register circuits, and the same pixel circuit is electrically connected with the plurality of groups of shift register circuits; the display panel further comprises a plurality of groups of clock signal lines, and the clock signal lines are electrically connected with the shift register circuit. The number of groups of the clock signal lines is smaller than that of groups of the shift register circuits. The number of groups of clock signal lines in the display panel can be reduced, the number of pins for a driving chip to provide clock signals for different groups of clock signal lines can be reduced, and the power consumption of the display panel is reduced.

The present invention discloses a radio frequency switch control circuit, a radio frequency switch and a control method, and belongs to the field of semiconductor circuit technology. A level conversion module receives a TTL logic input level, and converts the TTL logic input level into a plurality of target output levels; a complementary reverse output module receives a plurality of target output levels, and outputs two complementary levels through a primary inverter and a secondary inverter according to the target output level of each path, and controls the opening and closing of the series-parallel complementary switch of the radio frequency switch through the two levels; an exclusive OR logic output module receives all the complementary two levels output by the complementary reverse output module, performs AND gate and OR gate logic processing on all the complementary two levels, and outputs a level of a single MOS switch that controls the radio frequency switch. The present invention achieves the purpose of using a few digital inputs to generate more digital step-down outputs, reduces the number of chip pins, realizes chip miniaturization design, and meets the current market requirements.

A power management device and a power management method are disclosed. The power management device includes a plurality of controllers and a power detection signal generator. The plurality of controllers generate a plurality of power status signals, respectively. The power detection signal generator is coupled to the controllers, receives the power status signals, and generates a detection result signal according to the power status signals. The detection result signal has an oscillation frequency. The power detection signal generator sets the oscillation frequency of the detection result signal according to the power status signals.

The invention discloses a high-security chip scan chain test mode circuit and an entry method, and relates to the field of integrated circuit design, the high-security chip scan chain test mode circuit comprises a boundary scan test interface, a boundary scan test interface controller, a data register, a first data selector, a second data selector, an instruction decoder and an instruction register; the data register comprises an equipment marker register, a boundary scan register, a bypass register and a test register; the test register comprises N stages of test registers and M coding and decoding modules, and the coding and decoding modules are used for generating read-write enable signals of each stage of test register; opening the read-write permission of the test register through the instruction register and the coding and decoding module; according to the invention, the JTAG port is multiplexed, the number of pins required for testing is reduced, the difficulty of entering a scan chain test mode is increased, and the safety performance of the chip is improved.

The invention discloses a multi-core heterogeneous SoC, a debugging method of the multi-core heterogeneous SoC, electronic equipment and a storage medium. The multi-core heterogeneous SoC is provided with a USB device, the multi-core heterogeneous SoC is integrated with a plurality of heterogeneous systems, a binding relation is established between a first virtual UART serial port in each heterogeneous system and a target USB endpoint in the USB device, and the USB device is connected with a USB host arranged in the debugging device. A binding relation is established between a second virtual UART serial port corresponding to a heterogeneous system in the debugging equipment and a target USB endpoint in the USB equipment through the USB host; and the multi-core heterogeneous SoC is used for transmitting debugging data corresponding to the heterogeneous system with the debugging equipment through the USB equipment and the USB host based on a first virtual UART serial port in the heterogeneous system, a target USB endpoint bound with the first virtual UART serial port in the USB equipment and a second virtual UART serial port corresponding to the heterogeneous system bound with the target USB endpoint in the debugging equipment. According to the invention, the complexity of chip packaging and wiring of the printed circuit board can be reduced.

The application provides an ETSSOP20-10L lead frame and a power module. The middle part of the packaging unit of the lead frame has a base island. One side has a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin. The other side has a seventh pin, an eighth pin, a ninth pin and a tenth pin. The seventh pin, the eighth pin and the ninth pin are connected to the base island, and the remaining pins are arranged at intervals from the base island. The width of the seventh pin, the eighth pin and the ninth pin is greater than the width of the remaining pins. The distance between the first pin and the second pin, the distance between the fifth pin and the sixth pin and the distance between the tenth pin and the ninth pin are all greater than the distance between the remaining adjacent pins. The power module is packaged by the ETSSOP20-10L lead frame. The scheme of the application omits and widens some pins, meets the application requirements and ensures the heat dissipation effect, and reasonably arranges the position relationship between the base island and the specific pins to meet the dielectric requirements.

The utility model discloses an electronic paper keyboard and input equipment belong to keyboard technical field, this electronic paper keyboard includes keyboard substrate and sets up a plurality of keycaps on keyboard substrate, all is provided with electronic paper display panel and the FPC of electronic paper display panel electricity connection on keycap, electronic paper display panel shows the image on the keycap surface, keyboard substrate is equipped with the electronic paper PCB corresponding with each electronic paper display panel, and each electronic paper display panel is connected with corresponding electronic paper PCB through its FPC, keyboard substrate is equipped with control chip and a plurality of multiplexing module still, each multiplexing module is connected with a plurality of electronic paper PCB, and multiplexing module and control chip electric connection. This electronic paper keyboard can reduce the quantity of pin in chip, and reduce the energy consumption of device.

The utility model provides a lamp bead and a display module, the lamp bead comprises a substrate, a driving IC arranged on the substrate and a plurality of light-emitting chip sets electrically connected with the driving IC, the middle part of the substrate is provided with a first bonding pad arranged corresponding to the driving IC, the driving IC is arranged on the first bonding pad in a forward mounting manner, and the light-emitting chip sets are electrically connected with the driving IC. A plurality of second bonding pads corresponding to the light-emitting chip sets are arranged on the outer edge of the first bonding pad, the light-emitting chip sets comprise red light chips, green light chips and blue light chips which are arranged on the second bonding pads in an inverted mode, and bonding wires are arranged between the first bonding pad and the second bonding pads. The first bonding pad used for installing the driving IC and the second bonding pads used for installing the multiple light-emitting chip sets are arranged on the substrate, the driving IC can be communicated with the red light chip, the green light chip and the blue light chip only by being connected with the first bonding pad through the bonding wires, the number of pins needed for electrode direct connection of the driving IC and the chips is reduced, and the cost is reduced. And the complexity of the process is reduced.

The application is suitable for the technical field of battery interface, and provides a battery pack interface device of electric power tools and a battery pack of electric power tools. The battery pack interface device of electric power tools comprises a discharging positive pole pin, a charging and discharging negative pole pin and a multiplexing pin. The discharging positive pole pin is configured to deliver the electric energy output by the battery pack to the electric power tools when the battery pack is connected to the electric power tools through the interface device. The charging and discharging negative pole pin is configured as a common ground end of the battery pack. The multiplexing pin is configured to be used as an ID identification pin for identifying the model of the electric power tools when the battery pack is connected to the electric power tools through the interface device, and to be used as a charging positive pole pin for delivering the electric energy output by the charger to the battery pack when the battery pack is connected to the charger through the interface device. The battery pack interface device of the application comprises a composite pin which can be used as the ID identification pin or the charging positive pole pin under different conditions, thereby improving the convenience of the battery pack of the electric power tools.

The utility model relates to a power supply circuit with low power supply noise in an audio system. One ends of the first, second and third resistors are connected with an input power supply, the other end of the first resistor and one end of the fourth resistor are connected with a drain electrode of the NMOS tube, the other end of the fourth resistor and one end of the fifth resistor are connected with a positive input end of the operational amplifier, and a grid electrode of the NMOS tube is connected with an output end of the operational amplifier. The negative input end of the operational amplifier and the other end of the second resistor are connected with the input end of the numerical control resistor array, the source electrode of the NMOS tube is connected with the output end of the numerical control resistor array, and the other ends of the third resistor and the fifth resistor are connected with the power supply end of the digital circuit. And a plurality of resistance value control ends of the numerical control resistor array are connected to the digital circuit. According to the utility model, by dynamically matching the working current of the high-noise digital circuit, the current extracted from the power supply is approximately constant, the voltage noise of the shared power supply is reduced, the signal-to-noise ratio of the ADC and the DAC is improved, and the chip packaging volume and cost are reduced.

The invention relates to a half-bridge circuit driving chip, which comprises a driving module for receiving an enable signal and at least one input signal, and outputting a high-side output signal to a high-side switch and a low-side output signal to a low-side switch respectively; the programming module is provided with a decoding unit and a preset unit, the decoding unit is used for receiving the enable signal and the at least one input signal, the preset unit is coupled with the decoding unit, the decoding unit is used for outputting decoding data to the preset unit, and the preset unit is used for outputting a circuit parameter. The problem that an existing half-bridge circuit driving chip needs additional chip pins to increase adjusting and programming functions can be solved.

This invention provides a single-wire serial communication chip and a single-wire serial communication method. The single-wire serial communication chip includes a half-duplex interface module, a parallel-to-serial conversion module, a register, a counter, and a state machine. The state machine analyzes the current data transmission requirements based on the data storage state of the register and the external input signals received by the half-duplex interface module, and selects the corresponding operating mode to instruct other modules to output the data in the register, such as the initial chip data, to an external microcontroller. The connection between the half-duplex interface module and the external microcontroller is a single-wire connection, enabling communication between the single-wire serial communication chip and the external microcontroller. When implementing the single-wire serial communication chip of this embodiment on a PCB board, compared to chips based on I2C and SPI protocols, it occupies a smaller area and significantly reduces the number of pins.

The utility model relates to a charging circuit, a charging device and electronic equipment, and the charging circuit comprises an input positive electrode end and an input negative electrode end which are used for connecting an external power supply; the input end of the controlled switch circuit is connected with the input positive electrode end and the input negative electrode end, and the output end of the controlled switch circuit is used for supplying power to the electronic equipment; the control unit is provided with a first detection end, a second detection end and a control end, the first detection end is connected with the input positive electrode end, the second detection end is connected with the input negative electrode end, and the control end is connected with the controlled switch circuit to control the controlled switch circuit to be switched and conducted. The first communication end is used for communication between the electronic device and the outside. The control unit is used for detecting whether the external power supply connected with the input positive electrode end and the input negative electrode end is in positive connection or reverse connection, so that the number of pins used for being connected with the external power supply is effectively reduced, and corrosion and burning loss caused by dense and more pins during high-voltage charging are further avoided.

The embodiment of the invention discloses an optical module, an optical line terminal and a signal processing method, which are used for realizing smooth switching of a PON (Passive Optical Network) from time division to wavelength division. The optical module provided by the embodiment of the invention comprises: a light splitting unit used for splitting an uplink optical signal into a first optical signal and a second optical signal with the same bearing information, the uplink optical signal comprising a first low-rate signal and a high-rate signal with mutually conflicting wavelengths in a time division mode, in the wavelength division mode, a second low-rate signal and a high-rate signal of which the wavelengths do not conflict are included; the first low-rate light receiving assembly is used for detecting a first low-rate signal in the first light signals in a time division mode; the wave division unit is used for separating a high-rate signal and a low-rate signal from the second optical signal, and the low-rate signal is a second low-rate signal in a wave division mode; the second low-rate light receiving assembly is used for detecting a second low-rate signal in the wavelength division mode; and the high-speed light receiving assembly is used for detecting a high-speed signal in a time division mode and a wavelength division mode.

The application relates to the technical field of electronic circuits, and discloses a serial port three-in-one interface circuit, a control method thereof and a serial port system chip, the circuit comprising an RS422 data sending module, an RS485 transceiver module, an RS232 transceiver module, a level type sending selection circuit, a first receiving selection circuit, a second receiving selection circuit, a multiplexed receiving signal circuit and a serial port wiring terminal; the circuit is used for realizing serial port communication between a serial port controller and a peer device in different communication modes according to different combinations of three control signals configured at control ends of corresponding modules or circuits. The realization of the serial port three-in-one reduces the pin number and volume of the wiring terminal and the like.

The invention provides an integrated device, an electronic circuit, a circuit board and an air conditioner, the integrated device comprises a packaging shell, a first lead frame, a second lead frame, a first diode chip and an IGBT chip, and the packaging shell is provided with four pins; the first lead frame and the second lead frame are arranged in the packaging shell; the first diode chip is arranged on the first lead frame, the cathode is electrically connected to the first pin through the first lead frame, and the anode is electrically connected with the second pin; the IGBT chip is arranged on the second lead frame, a collector electrode is electrically connected to the second pin through the second lead frame, an emitter electrode is electrically connected with the third pin, and a grid electrode is electrically connected with the fourth pin. According to the invention, the first diode chip and the IGBT chip are integrated and packaged in the same packaging shell, the number of pins is reduced, the integration level is high, and the miniaturization of the device is realized; and in addition, the cost can be reduced, the manufacturing efficiency can be improved, only one-time assembly is needed when the circuit board is assembled, and the assembly efficiency is improved.

The utility model discloses a detachable circuit board assembly. The detachable circuit board assembly comprises a joint and a laminated circuit board component, the laminated circuit board component comprises a power supply management board, a communication control board, a motor control board and an encoder interface board, the communication control board is detachably arranged between the power supply management board and the motor control board, and a storage chip is arranged on the communication control board; the power management board is electrically connected with the communication control board, the communication control board is electrically connected with the motor control board, and the connector is electrically connected to the side, opposite to the communication control board, of the power management board. The encoder interface board is detachably arranged on the side, back to the communication control board, of the motor control board.

The invention provides a data feedback system, a display device and a data feedback method, a first backlight driver in each group of backlight drivers transmits detection data of the first backlight driver to a second backlight driver in the same group; the second backlight driver in each group of backlight drivers transmits detection data of the first backlight driver and the second backlight driver in the same group to the third backlight driver in the same group; the detection data of all the backlight drivers in the same group are transmitted to an integrated data processing unit until the last backlight driver in each group of backlight drivers; and the integrated data processing unit feeds back detection data of all groups of backlight drivers to the front-end controller. According to the scheme, the detection data of all the backlight drivers in the backlight unit are received through the data integration processing unit and fed back to the front-end controller, the data feedback efficiency is improved, and the wiring layout in the lamp panel is optimized.

This application relates to a detection device and a detection method. The detection device includes an encoding circuit, a decoding circuit, and a control unit. The encoding circuit integrates multiple detection signals output from signal units on the motherboard to obtain a target detection signal. The decoding circuit decodes the target detection signal to obtain multiple decoded signals. The control unit detects the hard drives on the backplane based on the multiple decoded signals to obtain a detection result. By integrating multiple detection signals output from signal units through the encoding circuit and restoring the integrated signal through the decoding circuit, the control unit can detect multiple hard drives based on multiple detection signals. When the number of hard drives is large, this detection device can greatly reduce the number of signal lines, thus greatly simplifying the signal transmission lines of the circuit and reducing the detection cost to a certain extent.

The invention discloses a mainboard, an in-situ detection method of an external board card and a readable storage medium, and belongs to the technical field of electronic equipment. A first controller in the mainboard is used for controlling a first serial data pin and a first serial clock pin to be connected with a second level circuit through a switching circuit under the condition that the board card in-place detection condition is met, and the first serial data pin and the first serial clock pin are disconnected with a first level circuit; receiving a first level signal provided by a first level circuit of the external board card in response to the first serial data pin and the first serial clock pin, and determining that the external board card is connected with the mainboard; receiving a second level signal provided by a second level circuit in response to the first serial data pin and the first serial clock pin, and determining that the external board card is not connected with the mainboard. According to the invention, the number of pins for in-situ detection on the mainboard and the external board card is reduced, and the cost of the main line and the external board card is reduced.

The present invention belongs to the field of chip testing, and relates to a parameterized controller that can reduce the number of pins used by DFT, which includes a PR_DFT control module, a Clock_ctrl clock control module, and a Reset_ctrl reset control module; on the output side of the PR_DFT control module, control signals for reset control logic and clock control logic are generated, and scan chain signals for compressor decompressors are generated; the Reset_ctrl reset control module performs a DC test on the reset signal by controlling a function reset; the Clock_ctrl clock control module selects whether to add AC test-related logic. The present invention can be freely applied in various test modes, without the need for a traditional JTAG control interface, and without too many DFT-related pins; the controller has a small number of pins and a low hardware cost.