PT2257 stereo electronic volume control IC, using I2C bus control. Below is a sample program for STC89C52 microcontroller to control PT2257 . Note that after PT2257 is powered on, it needs to wait 200...
The GPRS of the sim300c I debugged can send data to the PC on the public network, but the module cannot receive data sent by the PC! The software on the PC uses the . Can someone give me some advice? ...
In fact, we should add OSIntEnter and OSIntExit functions to any interrupt service function. This is because UCOSII is a preemptive kernel. After the interrupt service subroutine runs, the system will...
I have a board using stm8 105c6. I can't remember how many times I've burned it. It should be almost 10k times. Recently, I found I2C read and write errors. I touched the MCU with my finger and it was...
I've been debugging 5545 recently, using an internal reference, and the output is CMOS 2's complement. However, its output clock is sometimes present and sometimes absent, and the voltage meets the re...
I used Cadence Allegro to make a double-sided board. I want to print it online, but I don't know what files I need to produce? Also, what are the test points and mark points on the PCB board? Are they...
1. Several nouns
ABI:
The specifications that an executable file must follow in order to run in a specific execution environment;
Separately generated relocatabl...[Details]
A vacuum eutectic furnace is a critical piece of equipment used in the manufacturing and processing of various materials, particularly in the fields of microelectronics and nanotechnology. One of t...[Details]
Whether it is an electric car or an ordinary fuel car, for the vast majority of car buyers, the final cost of use is what they care about most. For fuel cars, how to save fuel is what drivers care ...[Details]
On August 25th, SK Hynix announced that it has completed development and entered mass production of its 321-layer, 2Tb QLC NAND flash memory product. This achievement marks the world's first applic...[Details]
According to foreign media reports, Nissan Motor has recently reached a cooperation with US battery technology company LiCAP Technologies to jointly promote the research and development of next-gen...[Details]
introduction
The concept of the smart home is gradually developing and gaining market acceptance. We believe its ultimate form lies in the interconnection of all home appliances through open i...[Details]
Electric vehicles are powered by electricity, and charging is a device that supplements the vehicle's energy source. It is common to need to recharge the vehicle when driving. But can you charge th...[Details]
A multilevel inverter converts a DC signal into a multilevel staircase waveform. Instead of a straight positive-negative output waveform, the output waveform of a multilevel inverter alternates in ...[Details]
A human-machine interface (HMI) refers to the platform used by people to operate a PLC. This platform provides an interface between programs and humans, serving as a medium for information transmis...[Details]
To improve the lateral active safety of intelligent connected vehicles, the identification and definition of unexpected functional safety scenarios for the EPS (Electronic Steering System) ...[Details]
Methods of DC motor speed regulation:
1. The voltage regulator can be used to change the input voltage and speed directly, which is often used for large kilowatt-level motors.
2. Thyristo...[Details]
Hair dryer structure and working principle: It is mainly used for drying and shaping hair, but it can also be used for local drying, heating and treatment in laboratories, physiotherapy rooms, ind...[Details]
At present, the most troubling thing about pure electric vehicles as new energy sources is not only the range anxiety, but also the disadvantage of long charging time. At present, ternary lithium b...[Details]
Munich, Germany, August 19, 2025 –
Infineon Technologies AG, a global semiconductor leader in power systems and the Internet of Things, announced today that its AIROC™ CYW20829 Bluetooth® low e...[Details]
Arm helps automakers bring new models to market at least a year earlier.
Zena CSS accelerates software and silicon development, enabling faster and more efficient delivery of AI cap...[Details]
51mcu
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