Fuse trimming in plastic package devices

Details Fuse trimming in plastic package devices Fuse trimming in plastic package devices

1994-08-08

1995-05-02

Yoo, Do Hyun

Static information storage and retrieval

Read only systems

Fusible

365196, 365201, 3652257, G11C 1300

Patent

active

054125944

ABSTRACT:
A method and apparatus provide fuse trimming or analog integrated circuit parameters in plastic packages. The apparatus includes an electrically interruptible circuit element, such as a fuse; a level reading unit which reads the state of the electrically interruptible circuit element and generates a code in response to the state; a state altering unit, such as a current source for providing a blow current; and a control circuit. A test level reading device allows screening for marginally-blown fuses. A switchable element removes applied voltage from fuses when the fuse is not being blown or read to prevent fuse regrowth.

REFERENCES:
patent: 5293564 (1994-03-01), Sukegawa et al.
patent: 5359559 (1994-10-01), Nomura et al.

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