簡單的來說, 是CMOS中P difusion -> N well -> P substrate -> N diffusion 的pnpn導通+ I) ~9 T( O, A1 n1 H
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." q# a* B$ x4 S+ X
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.