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The losses caused by low-level errors in purchasing chips may exceed your imagination. It may be production lag caused by pin mismatch, or direct losses on the production line caused by wrong parameters. Maybe you need to be more knowledgeable about the product to avoid this.It is necessary to be familiar with the naming rules of components. It will not only help you avoid purchasing wrong components, but also help you find alternative models. Engineers will also be more efficient and flexible in selecting models. Which parameters in naming can be flexibly replaced? The faster the xilinx component, the better the performance? Let’s talk about these today.
consultation
To understand this, let’s first look at a table to quickly learn the naming rules of xilinx.
Naming Rules for the Xilinx Artix-7 Family 
• Let’s go directly to the model number. If there is an extra L in front of the speed, it means low power. FG is the packaging technology type of the chip, G is ROHS environmental information, A is the package, 484 is the number of pins, C is the temperature grade, and there are several temperature grades of XILINX: C E I Q C is commercial grade 0℃-85℃,
• This naming rule table can analyze the naming rules of the four series of xilinx, including SPARTAN ARTIX KINTEX VIRTEX, which are these types of models. If you need the original picture of the table, you can send me a private message.
Which parameters in naming can be flexibly replaced?
• Only after we become familiar with the naming rules can we distinguish which parameters can be flexibly replaced.
• The first is that the speed level can be replaced, provided that the customer's design scheme is allowed. Generally speaking, speed represents the time from input to output of a device. If the processing process is faster, the better, use faster instead. is allowed.
• Regarding temperature, xilinx provides four temperature ranges to choose from. In case of shortage and when the customer's product does not need to reach the extreme temperature, it can be flexibly replaced.
Is the larger the value of the xilinx speed grade, the more valuable it is?
• Many friends in the same industry or when purchasing chips, the most common thing they say is to buy a fast one. The faster the chip, the better the performance and the more valuable it is. In fact, this is a misunderstanding.
• Many friends in the same industry or when buying chips, the most common thing is to buy the fast one. Is the faster the chip, the better the performance?. In fact, this is a misunderstanding. There is no one speed level for all devices. The exact definition, for Xilinx, the speed grade also has different meanings for FPGA and CPLD.
• For CPLD, the speed level indicates the time it takes for the logic to pass through the device. Therefore, -10 device indicates that the signal is completed within 10ns from input to output in the device. In this case, the smaller the value, the faster the speed and the higher the efficiency high.
• FPGA is actually the opposite. Every time you increase the number, the speed becomes about 5%. The larger the number, the faster the speed. Therefore, -5 is 10% faster than -4.This is the speed definition limited to xilinx, other brands define it according to the brand, so you still have to pay attention in the future.To make it easier for you to see, XILIN starts with CPLD.These models start with FPGA.
