How to from PCB Reverse Engineer to ORCAD Schematic
The “PCB reverse engineer ” that we’ve been through has to start with the chip. Such as simple low-end electronic watches, music chips, clocks and electronic chips. It has a complete industrial chain from “pulling single crystal, product design, verification, chip manufacturing, chip testing, packaging, chip sales”. In addition to forward design, these previous ones can also reverse these ics. In the past, because the gate size of the chip was small and the number of metal layers was small, it was possible to do the reverse. Now the chip integration is too high and the reverse method with many layers is not feasible (except for some device level chips). Even if you opt for PCB cloning service, it can be difficult.
The following diagram illustrates the process of how to reverse an inverter from an IC object:
① is the real chip to be “reversed”, ② is the real part of the inverter chip...