9results about How to "Reduced pin count" patented technology

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 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 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.

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 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.

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.