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For iOS 13 users, Apple has added a very useful feature in the iOS 14 system update, which may attract more old users to upgrade. Judging from the details of the latest update, the new version of the...[Details]
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1. Why can’t white LEDs be used at overvoltage or overcurrent?
Generally, the most commonly used 5mm white light LED has a normal working voltage of 3.0-3.5V and a normal working current of 20...[Details]
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China's humanoid industry has already begun preparations in terms of technology, commercialization, and industrial chain.
New technologies, new products, and new business models represente...[Details]
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The basic circuit of "digital power amplifier" is the long-existing Class D amplifier (called Class D amplifier in China). In the past, due to price and technical reasons, this amplifier circuit w...[Details]
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1.4 Electromagnetic shielding and shielding efficiency
Shielding efficiency is an index for evaluating the performance of a shielding body, and its expression is:
SE(db)=A+R+B
1)...[Details]
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introduction
With the rapid development of the automobile industry, the requirements for automobile control, communication and network are becoming more and more complex. The new generation of...[Details]
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In modern portable smart instruments or handheld devices, Chinese human-machine interface has become a de facto industry standard. Graphic dot-matrix LCDs that can display Chinese characters and sm...[Details]
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1 Introduction In the process of R&D and production of radio frequency products, it is often necessary to perform spectrum analysis of radio frequency signals, signal demodulation analysis, receiving...[Details]
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NCV-RSL10 is a Bluetooth 5 certified and automotive-compliant system-on-chip (SoC) with extremely high security and reliability. It is used in applications such as keyless entry, infotainment contr...[Details]
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Some high-end electrical appliances, such as computers, communication equipment, and home audio-visual equipment, have high requirements for power supply. Ordinary voltage-stabilized power supplies m...[Details]
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In order to reduce the size and weight, low-power portable products such as PDAs, handheld computers, pagers and portable measuring instruments are mostly powered by a limited number of batteries...[Details]
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Clock cycle The clock cycle is also called the oscillation period, which is defined as the reciprocal of the clock pulse (the clock cycle is the reciprocal of the crystal oscillator external t...[Details]
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1Written in front In order to make it easier for beginners to master the relevant knowledge of the IAR tool, I will start with an overall overview and then move on to specific details. This articl...[Details]
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I haven't written anything for a long time. I'm so busy at work that I have almost no time to learn. Today I debugged the timer function of STM32. There are many STM32 timers, but the debugging is the...[Details]
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To jump from assembly to C you must use an absolute jump:
Project code:
Add main.o to Makefile:
Start.S:
Make compile:
Main.c code:
#...[Details]
Microcontroller MCU
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