Unveiling I2C Pull-Up Resistor Value Techniques: 5 Key Design Points and Practical Cases Introduction: Why Must I2C Be Equipped with Pull-Up Resistors? In the communication between the main control chip and other modules (such as cameras, sensors, etc.) in embedded systems, the I2C bus is widely used due to its simplicity, reliability, and low cost. … Read more
A good circuit board not only needs to achieve the functionality of the circuit design but also must consider electrical characteristics such as EMI, EMC, ESD (Electrostatic Discharge), and signal integrity. Additionally, mechanical structure and heat dissipation issues for high-power chips must be taken into account. On this basis, the aesthetic aspect of the circuit … Read more
The development of packaging has evolved from the early DIP to the current 3D ICs [1][2], with a variety of packaging types emerging. Just the QF series has spawned a long list of types such as QFN (no leads), QFP (with leads)… There are many choices in terms of product applications [3], and each type … Read more
Editor’s Note: Oscilloscopes are almost an essential tool for electronic engineers, but not every engineer can use them effectively. This article shares seven common mistakes encountered when using oscilloscopes. These may align with what you’ve seen or differ, but of course, this is subjective. Ideally, all probes should be a wire that does not interfere … Read more
Editor’s Note: This article is primarily compiled from Keysight’s related content on probes. Oscilloscopes have expanded their application range due to the existence of probes, enabling online testing and analysis of the electronic circuits being measured, as shown in the figure below: Function of Oscilloscope Probes The selection and use of probes need to consider … Read more
1. Signal Crosstalk Crosstalk refers to the coupling phenomenon between two signal lines. Due to the close spatial distance, there will be unwanted inductive and capacitive coupling between the signal lines, leading to mutual interference. Capacitive coupling can cause coupling currents, while inductive coupling can cause coupling voltages. This is a tricky issue in circuit … Read more
A New Round of Teardown ActivitiesStarts in August, including drones, handheld oscilloscopes、computers、robot vacuums、smart watches、solid state drives、portable speakers, with many prizes and benefits, welcome to participate! As electronic engineers, we are quite fortunate compared to other engineering disciplines. Electronic products are not only rapidly developing and expanding their uses and functions, but our testing equipment provides … Read more
Introduction to EMMC Circuits EMMC (Embedded Multi Media Card) is a standard specification for embedded storage primarily aimed at products like mobile phones or tablets, established by the MMC Association. EMMC integrates a controller within the package, providing a standard interface and managing flash memory.The schematic for the 8-bit data signal is shown in Figure … Read more
Whether for smartphones or ultra-high-definition television screens, High Dynamic Range (HDR) cameras are no longer limited to delivering popular visual effects. An increasing number of high-performance cameras support Advanced Driver Assistance Systems (ADAS) and Autonomous Vehicle (AV) applications. For example, Waymo’s fifth-generation self-driving car is equipped with at least 29 cameras, in addition to 5 … Read more
The termination resistor for the CAN bus is generally 120 ohms. In fact, during design, it consists of two 60 ohm resistors connected in series. There are typically two nodes of 120Ω on the bus, which is a well-known fact for anyone with a basic understanding of the CAN bus. However, as someone who struggles … Read more