IC chip burning mode chip burning defect handling process

Date：2022-05-18 15:29:47 Views：1436

Some customers feed back the bad burning during mass production. Is this the problem of the chip itself? Or the problem with the burner? Or what other possibilities? In order to help you have an in-depth understanding, this paper will summarize the relevant knowledge of IC chip burning. If you are interested in what this article will cover, read on.

Whether the defective rate of batch chips exists; Test whether the burning equipment is normal. If no problems are found in these two points, what is the problem? There are several implicit problems that are often overlooked:

1. Although the mass production burning equipment is consistent with the equipment in the R & D and test stage, do they all use the original simulator? Or other special burning equipment not suitable for mass production?

Burn a chip. The special chip mass production burner can realize one key operation and ensure the yield of batch chips. The original chip simulator is for research and development, and the operation process cannot be so simple. It may need to operate the computer button every time, or connect and burn the chip again. These processes increase the human possibility of operation error.

2. If the selected chip burner is mass-produced and there is no problem, is it online burning? Or zuoka? If a chip clamp is required, is there a maintenance problem with the clamp? What is the current life of the fixture?

If the device is already a mass-produced chip programmer and the previous burning is normal, it is necessary to see how long your burning fixture, that is, the commonly known burning base, or the programmer adapter has been used. The chip burning fixture has been used for a number of times, that is, its service life. Many small faults such as poor contact are caused by the burning base.

Other possible poor chip burning conditions also include the incompatibility between the upper computer software of the programmer and the chip, and the need to update the firmware package.

Careful engineers share some practical experience with you

Verify burning file

It is important to verify the burning file. No matter how powerful the programmer is, it can only download the program into the chip, not modify the code. If the file is not verified, it is likely that it will not run normally after burning. Therefore, it is recommended that users must conduct small batch trial production before mass production to verify the correctness of the burning file.

Set configuration parameters“

The configuration parameters in the chip need to be modified manually, and cannot be burned directly after simply loading the file. If the parameters are not set according to the correct rules, the chip will not operate normally. This kind of problem is often encountered during the chip burning of SPI flash, which is similar to that the "QE" bit must be enabled.

Illegal operation

If there is illegal operation in the burning process, it will inevitably lead to the abnormal use of batch chips. For example, some customers mistakenly add "read" operation when burning chips, which is very fatal for batch burning chips. Burning after reading, the burning file has been wrong.

In order to improve the yield of products and avoid mass production accidents, we must correctly use professional equipment for production. The following are some reasonable suggestions put forward by engineers with rich practical experience. Please note:

reminder:

1. Conduct small batch verification before mass production, and then conduct mass production after verification, so as to avoid large losses;

2. Please ask the corresponding software engineer to give accurate guidance and explain the configuration parameters in detail to ensure the accuracy of burning;

3. Limit the available operations during production and assign the authority to necessary personnel to avoid misoperation.