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1. MCLK, SMCLK, ACLK default clock frequency
1.1 POR and PUC
POR refers to Power-On Reset, i.e. power-on reset (hardware), and PUC refers to Power-Up Clear, i.e. power-on clear (software reset)...[Details]
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TTL NOR gate, open collector gate and tri-state gate circuit
1.TTL NOR Gate
The figure below shows the logic circuit of the TTL NOR gate and its representative symbol.
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After leading to long waiting lists for smartphones, PCs and gaming consoles, a global chip shortage is now threatening the supply of another indispensable item: the cards you use to pay every day. ...[Details]
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A complete DS1302 clock application on STM32 /*DS1302 clock chip*/ uint8_t read = {0x81,0x83,0x85,0x87,0x89,0x8b,0x8d}; //Read the register addresses of seconds, minutes, hours, days, months, ...[Details]
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Random noise signals are very common in circuits. Sometimes we need to eliminate them, but sometimes we can use them to complete measurements. For example, we can test the effective bandwidth of an a...[Details]
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The ADM690 to ADM695 family of supervisory circuits are complete single-chip solutions that implement power monitoring and battery control functions in microprocessor systems. These functions inclu...[Details]
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The century-old automobile industry is undergoing a great era of change. The transformation of automobiles to electrification and intelligence is an inevitable trend. According to data released by ...[Details]
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Abstract In the actual application of electric vehicle power batteries, long-term actual road condition tests are required, which have long experimental cycles, complicated processes, and high cost...[Details]
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With the opening of the Olympic Games, the third generation mobile communication system is getting closer and closer to our lives. The trial commercial use of China Mobile's TD-SCDMA has finally gi...[Details]
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I. Definition According to the STM32 reference manual: "The independent watchdog (IWDG) is driven by a dedicated low-speed clock (LSI) and remains effective even if the main clock fails. IWDG is mo...[Details]
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TI's LM3466 is an intelligent linear LED driver for multi-channel LED systems. It can automatically balance the current of each LED channel, easily preset and fine-tune the current between LED stri...[Details]
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Zheng Yelai, President of Huawei Cloud Business, said at Huawei Connect 2020 that with the open source of computing basic software openEuler, openGauss, openLooKeng and AI framework MindSpore as sche...[Details]
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#include "lcd1602_driver.h" #include msp430g2553.h #include "typedef.h" #ifndef _LCD_1602_ #define _LCD_1602_ //lcd1602的io #define LCD1602_WR_DATA_PORT P2OUT //Data output port #define LCD1602_RD_DAT...[Details]
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system structure
The most easily thought of multi-site tester is a mini-tester system. Each mini-tester contains all the resources needed to run a series of tests at a site. Figure 3 shows a system c...[Details]
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Engineers and designers need to stay focused on the most important core architectural system design aspects in order to meet product deadlines. Designing with FPGA, DSP or microprocessor is a criti...[Details]
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