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DDR
15 address lines 32k
128M*2(20)=2(27)
Check the 6410 chip manual;
5.4.3 DDR/MOBILE DDR SDRAM INITIALIZATION SEQUENCE
• Program mem_cmd in direct_cmd to ‘2’b10’,...[Details]
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A charge pump is a DC-DC converter that uses so-called "fast" or "pumping" capacitors (rather than inductors or transformers) to store energy. They can increase or decrease the input voltage and ca...[Details]
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Recently, Tianyancha information showed that Xiaomi's subsidiary Beijing Changshu Technology Co., Ltd. had changed its industrial and commercial information. The company type was changed from a lim...[Details]
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With the popularity of electronic level instruments, users often make mistakes in operation and improper protection during work because they do not understand their basic working principles and per...[Details]
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NXP's SSL2103 is a multi-purpose AC/DC LED lighting controller for dimmable LED lighting. It has a wider power range and better dimming compatibility, making it suitable for dimmable and non-dimma...[Details]
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According to the "Notice on Printing and Distributing the Frequency Band Planning of Ultra-short Wave Telemetry and Remote Control Data Transmission Service" issued by the former National Radio Ma...[Details]
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The main reasons are as follows: Everyone knows that the principle of the live cable identification instrument is: when a 50HZ current flows through the running cable, it will generate an alterna...[Details]
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At present, flashlights and miner's lamps using white light high-power LED as light source have been widely and ideally applied and have formed a large-scale market. Many lamp manufacturers are usi...[Details]
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1. Correctly understand DC/DC converters A DC/DC converter is a voltage converter that effectively outputs a fixed voltage after converting the input voltage. DC/DC converters are divided into th...[Details]
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China Energy Storage Technology Development Co., Ltd. (the "Company") On March 6, 2024, the Company entered into a non-legally binding memorandum of understanding on strategic cooperation (the "MOU...[Details]
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Hardware memory management armv7v8 ARM is uniformly addressed, that is, peripherals and (memory A) are uniformly addressed, together forming a 4G physical address space (32 bits as an example). The m...[Details]
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The current at the input end of the inverter is generally smaller than the current at the output end of the inverter. There are three main reasons:
1. Operating frequency
When the i...[Details]
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After a few days of learning AVR microcontrollers, I used ATMEGA16, LCD screen LC1602, temperature acquisition module DS18B20, clock module DS1302, 5V boost IC, three buttons, and some electronic com...[Details]
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I tested the overlay function provided by the S3C6410 LCD controller and wrote a simple test to implement the overlay operation between FB0 and FB1.
The kernel option Windows must be at least 2...[Details]
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On October 30, according to CCTV News, on October 29, local time, Hildegard Mueller, president of the German Association of the Automotive Industry, issued a statement strongly opposing the EU's im...[Details]