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Obviously, the kernel timer of Linux is based on the clock tick (same as ucos). The clock tick of ucos can be set by the void OS_CPU_SysTickInit (INT32U cnts) function. In Linux, the clock tick is ...[Details]
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"Chip" refers to the original integrated circuit of our semiconductor products. If the mobile phone chip is the "brain" of the mobile phone, then the automotive chip is like the brain of the car. Aut...[Details]
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Before data acquisition, it is necessary to determine how many data points to collect within a fixed period of time, that is, to determine the sampling frequency. The sampling frequency is a very im...[Details]
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1. Experimental description and engineering document list 1. Experimental description: Key-pin connection: KEY1-PC5 KEY2-PC2 KEY3-PC3 LED-Pin Connection: LED1-PB5 LED2-PD6 LED3-PD Use scan...[Details]
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According to Nikkei News, Apple is accelerating the transfer of production lines, moving the production lines of iPhone, iPad, Mac and other products out of mainland China, indicating that Apple inte...[Details]
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Abstract: Using an IC (MAX971) that includes an open-drain comparator and a 1% accurate reference voltage, this circuit monitors the magnitude of a negative supply voltage and provides a digital warni...[Details]
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Currently, more than 20 models equipped with 800 V systems have been launched or are about to be launched worldwide, and fast charging stations that provide more than 350kW charging power have beco...[Details]
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Notes: The connection relationship of each interface in the schematic diagram can refer to the port definition in the code; The data latch of port P0 is two 74HC573 chips; 1. Detection of independent...[Details]
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Jiwei.com reported on January 12 that in May 2020, Huawei submitted a high-end smartphone design patent in China, which uses an under-screen camera and a rear zoom quad-camera design. On January 12, ...[Details]
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The memory capacity of Android phones is always beyond imagination. Previously, ZTE Mobile announced that it will release the world's first 18G+1TB flagship, the ZTE Axon 30 Ultra Space Edition...[Details]
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Basic textbooks describe both inverting and noninverting amplifiers based on op amps. These amplifiers have different gain formulas. The gain of an inverting op amp is the ratio of the feedback res...[Details]
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Instructions and pseudo-instructions: The former will generate a string of 1s and 0s of machine code after compilation, while the latter helps the former in the compilation process and will not gener...[Details]
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DHT11 driver reference http://www.51hei.com/bbs/dpj-112282-1.html http://www.51hei.com/bbs/dpj-38067-1.html 1602 driver reference http://www.51hei.com/bbs/dpj-24671-1.html /******************...[Details]
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1 Current Status of LED Stage Lighting
1.1 Overview of Technology Development
Since the emergence of blue light, white light and high-brightness LEDs in the 1990s, the lu...[Details]
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First look at the address line of 2440: mini2440 schematic.pdf
The 2440 chip provides 27 address lines = 128M.
The S3c2440 chip only provides 27 address lines addr on the pins provi...[Details]