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⑴Analysis of system clock principle The clock determines the execution speed of 2440. 2440 can use an external clock source, or use an external crystal oscillator and then obtain the clock frequenc...[Details]
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From the working principle of the frequency converter, we know that changing the working power frequency of the motor requires the process of rectification-- inversion. The brake resistor is locate...[Details]
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1. Overview The storage manager is responsible for managing all memory devices of 2440. The address lines of 2440 are ADDR0~ADDR26, which means the maximum execution addressing space is 2^27=128M. T...[Details]
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On November 12, Xindao Technology announced the arrangements for its initial public offering and listing on the Science and Technology Innovation Board and the preliminary inquiry announcement. Its s...[Details]
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When working under full load, due to the high level of pin 16, Q1 is disconnected, Q2 is turned on, Q3 is turned off (see Figure 3), the voltage end connected to the zero current detection end of L65...[Details]
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Driven by both domestic demand and external pressure, China has been increasing its investment in integrated circuit research and development in recent years. The dilemma of China's integrated circui...[Details]
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//This program is based on 51 single-chip microcomputer, and the voltage value to be output by TLC5615 ad chip can be set by matrix keyboard.
//And the 1602 LCD screen displays the input voltage valu...[Details]
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This paper mainly introduces an Ethernet interface circuit design scheme based on Samsung ARM9 chip S3C2440 embedded system, and successfully realizes the network data exchange of embedded system...[Details]
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According to Jiwei.com, TSMC was approved to set up a research and development center in Japan in February this year. Now, Juheng.com quoted the latest news from the Nihon Keizai Shimbun as saying th...[Details]
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UART programming 1.Initialization Our 2440 supports 3 UART serial ports, taking uart0 as an example. Then we need to implement the following functions to complete the most basic functions of the seri...[Details]
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Recently, market analysis agency Greenlight Insights released the VR offline market research report "2019 Location-Based Virtual Reality Industry Report". The VR offline entertainment market will rea...[Details]
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I encountered a problem when practicing ARM7 some time ago. The serial communication was not successful and the data was always wrong. It seemed that the baud rate was not set correctly. But I searche...[Details]
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hardware design The digital tube is used as a display, and the buttons are used to set the temperature control range. When the ambient temperature is lower than the minimum value, the fan is turned o...[Details]
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1 Introduction
With the development of the national economy, the electricity consumption of enterprises and individuals has increased significantly. Now the electricity consumption time of user...[Details]
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In the third quarter of 2021, the characteristics of large-screen, high-resolution, and high-pixel camera configuration of my country's mobile phones are concentrated in 5G mobile phone produc...[Details]
MicroPython Open Source section
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