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STP4CMP is a four-channel LED driver based on charge pump, designed for RGB lighting or LCD display backlight. It supports LEDs with forward voltage up to 3.8V, operating voltage 2.7V~5.5V, four-chan...[Details]
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CMMB is the abbreviation of China Mobile Multimedia Broadcasting. CMMB mainly provides broadcasting and television services for small-screen portable handheld terminals such as mobile phones and PD...[Details]
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This paper proposes a design scheme of LED dot matrix handwriting screen based on PIC microcontroller. This scheme uses PIC 16F877A microcontroller as the main core control component and designs a 32...[Details]
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/script script src="http://pagead2.googlesyndication.com/pagead/show_ads.js" type=text/javascript /script script src="http: //pagead2.googlesyndicat...[Details]
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Murata commercializes ultra-small 0402M size, low-loss chip multilayer ceramic capacitor supporting 100V rated voltage The first to realize the high withstand voltage characteristics (100V) of 0...[Details]
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The engine ignition test is an important part of the engine factory inspection. In order to ensure the quality of the engine, a rapid detection cold test technology is proposed to meet the needs of...[Details]
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Abstract: With PXA270 chip as processor, a battery charging and power metering module is designed by using two high-performance chips LM3658 and DS2786. This module can be used in mobile phones, ...[Details]
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This example describes a simple but powerful handheld probe that can be used either as
a logic probe
or as a pulse generator, either alone or simultaneously. This feature allows the probe t...[Details]
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ROHM develops thick film shunt resistor "LTR100L" with industry-leading 4W rated power
Helps increase the power of industrial and consumer electronics
ROHM, a world-renown...[Details]
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How much do you know about IGBT? IGBT (Insulated Gate Bipolar Transistor), insulated gate bipolar transistor, is a composite fully controlled voltage-driven power semiconductor device composed of BJT...[Details]
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Oscilloscope measurement method for repairing motherboard (1) Verification of communication signal 1) Verification method: Consider the calibration signal in "probe calibration" as the meas...[Details]
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According to the news from the University of Science and Technology of China, the team led by Academician Guo Guangcan of USTC has made important progress in the research of silicon-based semiconduct...[Details]
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Recently, Nanjing issued the "Nanjing City Action Plan for Accelerating the Development of Energy Storage and Hydrogen Energy Industry (2023-2025)". The plan proposes to focus on building a complet...[Details]
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Last night, Apple fell 3.7% in pre-market trading. Its current market value is 2.42 trillion U.S. dollars. It was overtaken by Microsoft (current market value is 2.43 trillion U.S. dollars), m...[Details]
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led_dev.c
1 #include linux/module.h
2 #include linux/version.h
3
4 #include linux/init.h
5
6 #include linux/kernel.h
7 #include linux/types.h
8 #i...[Details]