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一、检测的注意事项 1.熟悉所测微处理器和专用集成电路的电性能参数及功能特点。在检测与拆装微处理器或专用集成块之前,首先重要的是了解和熟悉所用微处理器或专用集成块的功能,内部电路、主要电性能参数,各引脚的作用以及各引脚正常电压、波形与外围元件组成电路的结构特点及工作原理等。同时,这也是着手检查与分析微处理器或专用集成块是否正常的前提条件。 2.测试时不要使引脚间造成短路。在通电情况下
First, the detection of Notes 1. Familiar with the measured microprocessors and ASIC performance parameters and functional characteristics. Before examining and disassembling the microprocessor or ASIC, it is important first to understand and be familiar with the features of the microprocessor or ASIC used, the internal circuitry, the main electrical performance parameters, the role of each pin, and the normal operation of each pin Voltage, waveform and the composition of the external components of the circuit structure and working principle. At the same time, this is also a prerequisite for embarking on an inspection and analysis of the microprocessor or ASIC. 2. Do not make the test result in a short circuit between the pins. In the case of power