We know that general IC components usually have only two power pins, one is Vcc or Vdd, and the other is Gnd or Vss. However, modern MCUs often have multiple power pins. What is the reason for this? Taking a certain 100-pin MCU as an example, we can see that it has 5 sets of … Read more
Introduction 1. MCU’s DAC 2. PWM with Filtering Circuit 2.1 PWM Output DAC 2.2 Explanation of RC Value Selection for PWM Filter 2.3 0~3.3V PWM Output to 0~10V 3. Dedicated Conversion Chips Introduction It has been a long time since I attended a circuit class, and recently I encountered a project requirement, so I thought … Read more
Follow+Star Public Account Number, don’t miss exciting content Source | Renesas Embedded Encyclopedia To create a better atmosphere, many electronic products have applied breathing lights. There are many methods to achieve breathing lights, which are relatively simple. Today, I will describe a few simple steps to configure a breathing light effect with the Renesas microcontroller. … Read more
1. Introduction Currently, most microcontrollers come with built-in AD converters that are typically between 10 to 12 bits. In general applications, how much does the bit depth of AD conversion affect measurement errors? Is a 12-bit ADC sufficient? We will discuss the impact of AD conversion bit depth on measurement error through practical measurements. 2. … Read more
Follow+Star Public Number, don’t miss exciting content Source | Embedded Technology Development Last week, I shared the design of the Bootloader Program Security Mechanism, today I will share the design ideas for the remote upgrade of microcontrollers. In IoT applications, the remote IAP upgrade of MCU programs is a very useful feature. When there are … Read more
To avoid missing my updates, remember to check the public account in the upper right corner and set it as a star, take a star and give it to me. Have you noticed that most microcontrollers operate at 3.3V instead of 3V or 3.5V? Why is that? If you know the reason, please tell us … Read more
To master the STM32 microcontroller, one cannot do without serial communication. Serial communication uses a protocol called the serial communication protocol to manage data transmission, which controls the data flow during transmission, including data bits, baud rate, parity bits, and stop bits. Due to its simplicity and ease of use, serial communication is widely applied … Read more
This issue’s topic A few days ago, I shared an article about CPUs:A Hardcore Knowledge About CPUs, which discussed what work CPUs actually do: “The core work of the CPU is to fetch instructions from programs or applications and execute computations. This process consists of three key stages: fetch, decode, and execute. The CPU first … Read more
Many students mention learning microcontrollers, and they often have the following expression: Seeing others’ programs densely packed, they don’t know where to start. In fact, if you calm down and read others’ programs, you will find a certain pattern, which is often modular. Microcontrollers have a lot of registers, and it’s hard to remember what … Read more
First, let’s talk about As we all know, the biggest difference between microcontroller programming and computer programming is that microcontrollers have very limited resources, and most low-end microcontrollers do not have an operating system. Except for some embedded-level chips that use Linux, most operations are done with simple RTOS, and some simple applications or chips … Read more