1, the JTAG programming method is online programming, the traditional production process first preprogramming the chip and then installed on the board, the simplified process is the first fixed device on the circuit board, and then use JTAG programming, thus greatly speeding up the project progress. The JTAG interface can program all the components inside the DSP chip. There are many kinds of chips containing JTAG ports, such as CPU, DSP, CPLD and so on. Within JTAGThe department has a state machine, TAP controller.
2, if your MCU is STM32F10XXX, there is no need to apply an external resistor, which is found in the STM32F10XXX reference manual.
3, on the chip with limited resources, the SBW-JTAG interface is implemented by only two lines (SBWTCK and SBWTDIO), through additional VCC, GND connections, to ensure convenience and pin utilization efficiency, such as the Serial Wire debugging mode of the STM32 series.
Pin function is to support 5G dual-mode full Netcom. The power chip ly2015 uses a Qualcomm Snapdragon 778g processor, which has reached more than 500,000 points, and its pin function also supports 5G dual-mode full Netcom. It has a built-in 5000 mah battery, four 44w fast charging, dual speakers that support stereo sound, or a linear motor that supports a 5mm headphone jack.
Check the power supply: Directly use a multimeter to measure the levels of VCC and GND and check whether they meet the requirements. If the VCC deviates too much from 5V or 3V, check the 7805 or other voltage regulator or filter circuitOutput. Check the crystal oscillator. Check the RESET pin level logic, noting whether the model used is a high or low level reset.
chip abbreviation IC; Also known as microcircuits, microchips, wafers, chips in electronics is a way to miniaturize circuits (mainly including semiconductor devices, but also including passive components, etc.), and often manufactured on the surface of semiconductor wafers.
Strong ability to fight, electric rearview mirror and 4 probe reversing radar quickly, cost-effective home transportation tools. Long-distance and highway driving fuel consumption is about 3L 100 kilometers, and the instrument panel design is simple. CARSThe appearance is thick, the urban fuel consumption is equivalent to other models with the same displacement, and the long-distance high-speed fuel consumption performance is quite excellent. The manual transmission gear is clear, the braking performance is good, very competitive, EBD and rear wheel follow-up function is excellent and clear.
can implement carpaly function by adding modules. The 2016 GLE original car already has a configuration module that can be activated using obd.
The main control chip adopts the 8051 series single chip microcomputer chip, the single chip microcomputer communicates with the sensor through the serial port, which can easily collect the instantaneous flow and cumulative flow, and record the instantaneous flow since the power onThe maximum and minimum of flow, with the function of over-range indication, the program simulates SPI interface to achieve communication with NRF2401.
2, in the daily circuit maintenance work how to accurately judge the power supply IC chip in the circuit is good or bad, is an important work content of repairing TV, audio, video equipment, if the judgment is not accurate, not only spent a lot of energy, the focus is that the fault in the integrated circuit still exists, so to make the correct judgment on the integrated circuit, It is a compulsory course for every maintainer.
3, pin workIt can support 5G dual-mode full netcom. The power chip ly2015 uses a Qualcomm Snapdragon 778g processor, which has reached more than 500,000 points, and its pin function also supports 5G dual-mode full Netcom. It has a built-in 5000 mah battery, four 44w fast charging, dual speakers that support stereo sound, or a linear motor that supports a 5mm headphone jack.