Electrostatic discharge protection circuit triggered by EPROM

Details Electrostatic discharge protection circuit triggered by EPROM Electrostatic discharge protection circuit triggered by EPROM

1998-05-05

2000-04-25

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

H02H 900

Patent

active

060551437

ABSTRACT:
An electrostatic discharge protection circuit protects an internal circuit that is coupled to a pad from electrostatic discharge damage. The electrostatic discharge protection circuit comprises at least one silicon-controlled rectifier and an erasable programmable read only memory. The silicon-controlled rectifier is configured with an anode and a cathode connected to the pad and a grounding node, respectively. The erasable programmable read only memory is configured with a drain connected to the pad, a source connected to the grounding node, and a control gate connected to the grounding node. Accordingly, the erasable programmable read only memory enters breakdown to be programmed and triggers the silicon-controlled rectifier to conduct a current when electrostatic discharge stress occurs at the pad.

REFERENCES:
patent: 5452171 (1995-09-01), Metz et al.
patent: 5465189 (1995-11-01), Polgreen et al.
patent: 5528188 (1996-06-01), Au et al.
patent: 5671111 (1997-09-01), Chen
patent: 5869873 (1999-02-01), Yu
patent: 5909347 (1999-06-01), Yu

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