Professional electronic components marketplace information details? OFDMA changed that. By composing subcarriers into resource units (RU), OFDMA channels can dynamically divide the instantaneous bandwidth to different users. OFDMA has suddenly increased the number of users that are instantly supported. The 20MHz bandwidth in the following figure is an example. Through subcarrier allocation, 20MHz can support up to 9 devices to access at the same time, 40MHz can support 18 devices, and so on. Fig. 2 uses the number of resource units available under OFDMA’s 20MHz% 0AWi-Fi 6 in which each subcarrier is 78.125khz. 20MHz is 256 subcarriers. 6 Edge indicates that there are 6 subcarriers as protection bands from the edge. ) It can be said that OFDMA has brought about a qualitative change in the capacity of Wi-Fi channels. See additional details at srp1265a-2r2m.
Then, as demand for cars picks up in the fall of 2020, Toyota Denso Renesa plans to order 28nm semiconductors from TSMC again, but there is no room to produce in-car semiconductors because TSMC lines are occupied by other semiconductors. Although the inventory in the autumn and winter of 2020 exceeded the limit, by 2021, inventory had bottomed out, coupled with the shortage of 28nm semiconductors, cars could not be made. 28nm is the last generation of planar transistors (FinFET from 16 / 14nm to 3D) (2) do not use self-aligned double pattern (SADP) (will use SADP from FinFET) (3) Renesas vertical integration (integrated equipment manufacturer IDM), for example, outsource production to FinFET from this generation. In short, 28nm semiconductors produced by TSMC and other contract factories have a good performance-to-price ratio, so many electronic devices, including automobiles, use this semiconductor. At the invitation of the Japanese government, the TSMC Kumamoto plant, which will begin operation in 2024, will also mainly produce such 28nm semiconductors.
In the onboard system shown in the figure above, the green rectangle represents the printed circuit board (PCB), and the small rectangles of various colors above represent various functional modules in the system, such as memory. The functions of these modules are implemented by independent silicon chips, and they are connected by metal traces on the PCB to finally form a complete system. The System-on-Chip refers to the realization of the functions of the entire system on a single silicon chip. The schematic diagram is as follows: As shown in the figure above, a system-on-a-chip (SoC) implements various functional modules such as storage, processing, logic, and interfaces in one chip, rather than requiring several different physical chips to be implemented like a system-on-board. Compared with system-on-board, SoC solutions are lower cost, enable faster and more secure data transfer between different system units, have higher overall system speed, lower power consumption, smaller physical size, and better reliability.
Easybom is proud to provide a communication bridge to suppliers, purchasers, and engineers. That makes it easier for them to communicate and find each other more easily. “Win-win and mutual-win” is the philosophy that easybom insists on. easybom has the most suppliers, purchasers, and engineers in the world. easybom introduced the latest electronic components to the market. In easybom, you can find anything you want. The goal of easybom is to create a large number of business opportunities for each user in the world by using data analysis in the most convenient way. Easybom, a powerful information aggregation platform for the electronic component industry, help you search the electronic components and supplier prices you want in a fast and easy way.
After successfully settled in easybom, the manufacturers can display the products sold on easybom and sell them efficiently. You can display and sell products on the Easybom platform. Connect to millions of engaged Easybom users when you partner with us. Easybom API: We have built a flexible API that allows you to customize the data you receive to optimize your experience. The platform provides any product among which you need to compare prices. Help you find the best quality products and buy them from suppliers. Discover more details on electronic componenets.