簡單的來說, 是CMOS中P difusion -> N well -> P substrate -> N diffusion 的pnpn導通 $ U u. F- Q! a導致一電流latch 住. 通常發生在I/O PAD端, 但也有可能發生在internal circuit.) \, W; R4 s) }; }3 T
可以去查一下相關資料.
A latchup is the inadvertent creation of a low-impedance path between the power supply rails of an electronic component, triggering a parasitic structure, which then acts as a short circuit, disrupting proper functioning of the part and possibly even leading to its destruction due to overcurrent. A power cycle is required to correct this situation.