What are the basic methods of IC chip function detection?

Date：2022-03-30 16:39:00Views：1012

There are thousands of types of IC chips, and their functions are also diverse. What's more, now more and more advanced all kinds of SOC and AI chips, the traditional function and performance testing, in the face of increasingly complex IC design, can achieve more and more limited results and low coverage. With the increasing demand for miniaturization of electronic devices, the functions of single chip are increasing. In the current process, in order to ensure the quality of chips, chip detection is generally carried out in the process from design and molding to mass production. The traditional chip debugging technology is to add a set of function oriented test program based on the chip function. Generally, it can only detect whether the chip has errors or faults, and can not accurately locate the errors on the chip terminal. It can only be judged according to the experience of testers, which will lead to slow chip detection speed and low efficiency.

Chip, also known as semiconductor component products, also known as microcircuit Microchip Integrated circuit. A silicon wafer containing integrated circuits. It is very small and is usually part of a computer or other electronic device. All its components are integrated in structure, which makes the electronic components take a big step towards miniaturization, low power consumption and high reliability. At present, the semiconductor industry mainly uses silicon-based integrated circuits.

1. Implement software.

According to the data comparison requirements of input and output response of "power heart", a comprehensive verification code is compiled. The coding design is fully implemented according to the requirements of "cell" timing.

According to the design idea of constructing the test platform with programmable devices, the function test platform is constructed in the following ways: using programmable logic devices to process the generation of input excitation and output response; ROM realizes DSP core program Control register parameters Pulse pressure coefficient and filter coefficient; SRAM is used as off chip cache.

2. Hardware implementation.

According to the implementation block diagram of the function test platform, the schematic diagram and PCB are designed, and finally a set of system platform which can test the function of "electric core" is completed.

Programmable logic device classification:

1. The circuit in the fixed logic device is permanent. It completes one or a set of functions - once manufactured, it cannot be changed.

2. Programmable logic device (PLD) is a standard part that can provide users with a variety of logic functions. Its speed and voltage characteristics can be changed at any time, so as to complete many different functions.

As the core component of electronic products, the performance of chip tends to be better and better. In order to ensure the quality of chip, people have adopted effective testing technology to test the function of chip. Wafer confirmation: with the improvement of design complexity, the workload and operation difficulty increase by an order of magnitude. By running complex simulation in design engineering, the verifier describes the chip product specification into various functions in the form of binary waveform, processes the complex state space and detects its errors, which is the biggest challenge faced by the verification engineer.

In short, chip testing is not a single link, but runs through the whole process of design, packaging and testing. The above is the related content of "IC chip function test" brought by the core creation test. I hope it can be helpful to you. We will bring more wonderful content in the later stage. The company's testing services cover: electronic component testing and verification, IC authenticity identification, product design and material selection, failure analysis, function testing, factory incoming material inspection, tape braiding and other testing items. Welcome to call Chuangxin testing. We will serve you wholeheartedly.