How to choose the appropriate burning mode for different chip models?

Date：2022-10-27 11:00:00Views：826

Chip burning refers to the chip brushing software, also known as firmware. Generally, the goods delivered by the original factory have not been burned, but they have certain codes in essence. The process of "transporting" the program to the internal memory space of the chip is called burning, and the burning methods are generally divided into offline burning and online burning. Different burning methods will affect the production process of the factory, the design of tooling and fixtures, etc. How to choose the appropriate burning mode for different chip models?

1. Investment cost

Offline burning: Through a variety of adapters compatible with different packaging chips, you can use chips and adapters to achieve program burning.

The adapter itself is a kind of precision fixture. Different chips and packages need to choose different adapters.

The Emmc chip package that is widely used now is developing towards BGA, QFN and other small, flat directions, and the price of this packaged adapter is not low.

Online recording: The standard communication bus of the chip is used for online recording, such as USB, SWD, JTAG, UART, etc. The interface is relatively fixed, and few pins are required for writing.

Moreover, because the interface communication rate is not high, ordinary wire can be used without high consumption.

2. Production process

In the production process, offline combustion and online combustion will bring obvious differences, and offline combustion requires precise fixture coordination.

If errors are found in the production test and the production backtracking is corrected again, the chip needs to be removed and repeated according to the established process, which consumes more manpower and material resources and costs more.

In normal production, there are many additional factors. For example, PCBA cannot withstand high temperature and is easy to deform during chip disassembly, which increases the risk of invisible scrap.

Online burning itself is to burn by connecting to the program. If an error is found in the production test, the wrong PCBA can be returned immediately. Again, a lot of manpower and material resources can be saved, with low cost and high efficiency.

Moreover, more importantly, in the automation development of the production line, more and more manufacturers have added ICT, FCT and other functions to the production line. The use of automatic fixture buffer with online production can save manual operation to the burning stage. After the belt is directly fired, it is delivered to the PCBA testing machine for testing. The entire production process is completely automated, which can greatly improve the production efficiency.

Chip burning process steps

First, connect the data cable of the burner, then load the chip into the burner seat, and turn on the computer and the burner film;

Second, run the burning software;

Step 3: select the chip brand and model;

Step 4, call in the software to be burned;

Step 5: check the software check code;

Step 6: Start to burn the software. If "OK" is displayed and the indicator light of the corresponding burning seat lights up, it indicates that the burning is successful;

The last step is to make a burning mark. Stick a sticker on the successfully burned chip, and put the failed chip into other burning seats for re burning. If the chip is confirmed to be damaged, put it into the defective product and make a mark.

So the above content is the introduction of chip burning and program steps of different models. I hope it will be helpful to you. We will bring more wonderful content later. The company's testing services cover: testing and verification of electronic components, IC authenticity identification, product design material selection, failure analysis, functional testing, factory incoming material inspection, tape weaving and other test items. Welcome to call Chuangxin Testing, we will serve you wholeheartedly.