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Here is a brief introduction to the interrupt grouping of STM32: STM32 divides interrupts into 5 groups, group 0~4, and a maximum of 16 interrupt priorities can be set. The grouping setting is define...[Details]
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According to news on November 10, recently, a new OPPO phone with model PEGM00 passed the network access review of the Ministry of Industry and Information Technology. It is reported that the phone i...[Details]
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In the past two years, power battery manufacturers have launched large-scale expansion plans, and the production capacity planning of the entire lithium battery industry is moving towards 2TWh. L...[Details]
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In recent years, the automatic test system of electronic equipment has entered a new era with miniaturization, intelligence, integration and informatization as the development direction, while taki...[Details]
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Battery-powered mobile devices usually need to charge the system battery through an external AC adapter. Devices with different power supply voltages often share similar power sockets and plugs. Th...[Details]
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S3C2440 clock
C code about clock in ADS1.2:
ChangeMPllValue((mpll_val 12)&0xff, (mpll_val 4)&0x3f, mpll_val&3);
ChangeClockDivider(key, 12);
1) Relationship between FLCK, HCLK a...[Details]
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1. Abnormal protection problem of electronic ballast
Electronic ballast fluorescent lamps are a recognized green lighting product. Compared with ordinary inductive ballast fluorescent lamps, ...[Details]
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I just came into contact with microcontrollers, and I chose the domestic STC microcontroller, which is said to be the most convenient to download. This microcontroller uses the serial port to download...[Details]
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Looking at the various giant companies in the IT digital industry, mobile phone + tablet + computer can be said to be the most ideal product structure. Mobile phones and tablets tend to be lightweigh...[Details]
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PORTA is defined in iom16.h as follows: #define PORTA _SFR_IO8(0x1B) Then define _SFR_IO8() in sfr_defs.h as follows: #if _SFR_ASM_COMPAT ...... #define _SFR_IO8(io_addr) ((io_addr) + __SFR_OFFSET)...[Details]
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Modern electronic system design requires a power supply with a constant output. No matter the input voltage or load current changes, as long as these changes are within the operating range of the v...[Details]
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Clock Introduction: The clock cycle is also called the oscillation cycle: it is defined as the inverse of the clock pulse (the clock cycle is the inverse of the crystal oscillator directly used by th...[Details]
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In addition to AI attracting a lot of attention in the industry, news about NB-IoT is also exposed every now and then, showing that all links in the NB-IoT chip, network, and deployment industry ch...[Details]
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In the early morning of September 11, after introducing the iPhone 11, Apple also grandly launched the iPhone 11 Pro and iPhone 11 Pro Max with rear triple cameras. Both phones come in four colors,...[Details]
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移相控制的全桥PWM变换器是最常用的中大功率DC／DC变换电路拓扑形式之一。移相PWM控制方式利用开关管的结电容和高频变压器的漏电感或原边串联电感作为谐振元件，使开关管能进行零电压开通和关断，从而有效地降低了电路的开关损耗和开关噪声，减少了器件开关过程中产生的电磁干扰，为变换器提高开关频率、提高效率、减小尺寸及减轻质量提供了良好的条件。然而，传统的移相全桥变换器的输出整流二极管存在反向恢复过...[Details]
MEMS sensors
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