[align=left][color=#000][font=Arial, Verdana, sans-serif][size=12px][font=宋体][size=4] Recently, the National Health Commission released the "China Youth Health Education Center Information and Interpr...
A battery pack with 4 to 6 strings can achieve fast charging with a buck-boost or buck-boost circuit. In addition, the introduction of USB PD3.1 supports 48V output voltage and 240W output power. With...
I got a book in this book grab event: Here is the 3D photo:I got this book by following others. It is a bit difficult for me and I need to study hard for a while! ! ! I want to say that I followed oth...
CSP ( chip scale packaging ) technology is driving the development of packaging and printed circuit boards towards smaller size. Wafer-level CSP refers to silicon wafers with redistribution film layer...
Please help recommend a DC/DC suitable for the following parameters, thank you! [color=#000][backcolor=rgba(0, 0, 0, 0)][size=10.5pt] 1. Voltage: Input voltage is greater than about 40V (40V, 45V, 50V...
Recently, the U.S. Department of Commerce announced that it would prohibit companies in the country from selling any electronic technology or communication components to ZTE, a Chinese communicatio...[Details]
Event: The company simultaneously released its 2017 annual report and the first quarter report of 2018. In 2017, the company achieved revenue of 8.886 billion yuan, a year-on-year increase of 48.01...[Details]
1. Test conditions Hardware: STM32L432KC Main frequency: 80MHz Compiler: IAR 8.20.1 Compiler options: High Speed no size constraints CRC generator polynomial: 0x782f 2. Test Method The softwar...[Details]
Using Systick timer to achieve delay 1. SysTick timer characteristics The SysTick timer is a 24-bit down counter, that is, when vlue is decremented to 0, an interrupt is triggered and the load va...[Details]
I used STM32CubeMX V4.22.1 to generate a project including EHT and Lwip. The debugging has been abnormal. After careful inspection, the following problems were found: 1. The hardware uses LAN8720A, b...[Details]
Although it is early summer, the Chinese smartphone market is still in the cold winter, just like Beijing in April with snow. For mobile phone brands caught in the middle, the cold is even more bit...[Details]
The application of millimeter wave technology in mobile communications also involves a series of technical problems, including the large propagation loss of millimeter waves and the susceptibility ...[Details]
This example is mainly to familiarize yourself with the register configuration of Timer A and the configuration method of IAR. /*********************************************** Program function: re...[Details]
I have been working on a stm32 project recently and have been struggling with its startup method. I saw a good article and reposted it. The format of the original article is not very good, and there...[Details]
As shown in the figure, the author soldered a STM32F207VET6 board using a TQFP (32-100PIN) 0.55MM to direct plug adapter board. The board leads out the SWD debug interface (only PA13 and PA14 are occ...[Details]
If you do not use an external crystal on the STM32, the connection method of OSC_IN and OSC_OUT If you use the internal RC oscillator instead of an external crystal, please follow the following metho...[Details]
Single-chip microcomputer experiment design: It is required to use 8951 series single-chip microcomputer, design a pulse generator with a pulse width duty cycle of 50%, 25% adjustable, and a period o...[Details]
The circuit shown in the figure requires that the light is off when the machine is turned on. Press the button once, and the light D1 will turn on and automatically turn off after a delay of 10 secon...[Details]
Unfortunately, my serial port has some problems and I can't print information. I can only debug to view variables and see the values. Fortunately, there is not much AD conversion code, and I can use ...[Details]
Arduino programming is easy to learn, but it has to be used with an Arduino control board, which makes it more expensive and bulky. In addition, most circuits other than the microcontroller circu...[Details]