If the chip screen is erased, the model can be identified by the following methods:
First, the type of chip can be roughly judged by its appearance and size.
Secondly, a multimeter or test instrument can be used to test the pin and electrical performance parameters of the chip, so as to further determine the type of the chip.
In addition, you can also try to find the chip's data book or related technical materials to learn more about the chip details and specifications. It should be noted that if the chip screen is erased, it may also mean that the chip has been modified or forged, so it needs to be handled carefully.