Analysis of DDR4-96ball industrial control motherboard memory test fixture solution
1. Actual requirements:
1.Package: BGA package
2. Number of Pins: 96pin
3. Spacing: 0.8mm
4. Chip type: DDR chip
5. Testing requirements: mass production testing and performance verification
2. Demand analysis: This DDR needs to be used on a new industrial control motherboard and adapted to the corresponding memory usage. At this time, it needs the support of matching test data. Generally speaking, the rate of a single DDR4 particle is not high, and it mainly needs The memory with another memory (not yet made) should not have an overly long test socket design; in addition, because it needs to adapt to the corresponding test board, it needs to process the data on the PCB board, and there needs to be a corresponding PCB Design light painting files to assist in adjustments and avoid voids;
3. Production: The chips are mainly of general type, and you need to provide the motherboard and corresponding PCB information to get it done. Only after the PCB is confirmed to be OK can the corresponding product design be carried out. After the design is OK, special parts must be evacuated. After the design is completed and manufactured, the quality inspection is relatively simple and straightforward. You can directly check whether the assembly is OK and whether the product is OK. Just perform normal power-on self-test;
4. It should be noted that there are long issues such as PCB avoidance design and DDR.
