The clock circuit is an oscillator that provides a rhythm for the microcontroller. The microcontroller must operate under this rhythm to perform various tasks. Therefore, the microcontroller will not function properly without a clock circuit. The clock circuit itself does not control anything; rather, it is the program that allows the microcontroller to perform corresponding … Read more
I encountered a minor simulation issue while using the Multisim SPICE tool to analyze an oscillator. This is a simple Colpitts oscillator circuit, and the simulation shows that it indeed oscillates. However, I wanted to view the transfer function of the discrete components just to ensure everything is working properly. When I tried to get … Read more
01 Inside the MCS-51 microcontroller, there is a high-gain inverting amplifier, where the input is XTAL1 and the output is XTAL2. The oscillation circuit formed by this amplifier and the clock circuit together constitute the clock mode of the microcontroller.Depending on the hardware circuit, the clock connection methods of the microcontroller can be divided into … Read more
As a representative of embedded systems, the 51 microcontroller is widely used, and its normal operation relies on a stable and accurate clock signal. To ensure signal stability, a clock oscillator circuit is essential, as it determines the execution speed of the microcontroller and the timing of synchronous operations. The clock oscillator circuit of the … Read more
13.2.1 Clock Sources 13.2.1.1 External Oscillator Clock Area The external oscillator includes an external high-speed oscillator (main clock oscillator) and an external low-speed oscillator (sub-clock oscillator). Main Clock Oscillator (MOSC): Main clock oscillator RA6M5/RA4M2 connects to an external 8~24MHz high-speed crystal oscillator (connected to pins EXTAL, XTAL); RA2L1 connects to an external 1~20MHz high-speed crystal … Read more
For general-purpose MCU chips, the CPU operating frequency ranges from 100 to 300 MHz, while the frequency of typical crystals (xtals) is usually in the tens of MHz range. Therefore, MCUs typically use a PLL module to multiply the frequency to the hundreds of MHz range.Similarly, taking the STM32F10xxx series as an example, let’s examine … Read more
Follow+Star Public Account Number, don’t miss out on exciting contentSource | Internet When designing electronic circuits, practical experience is crucial, but it is built upon theoretical knowledge. Therefore, we still need to master some common electronic knowledge. The following organizes some common circuits, displayed in dynamic graphics. 1. Single-Phase Bridge Rectifier Circuit 2. Single-Phase Half-Wave … Read more