Invention Grant
- Patent Title: Reliable readout of fuse data in an integrated circuit
- Patent Title (中): 在集成电路中可靠读取熔丝数据
-
Application No.: US14269833Application Date: 2014-05-05
-
Publication No.: US09136012B1Publication Date: 2015-09-15
- Inventor: Yoav Kasorla , Shai Ojalvo , Eyal Gurgi
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Main IPC: G11C17/18
- IPC: G11C17/18 ; G11C17/16

Abstract:
An integrated circuit includes fuse readout logic and first and second sets of fuses. One of the sets includes one or more primary fuses whose burn states represent respective bit values, and the other of the sets includes one or more secondary fuses whose burn states are indicative of the bit values stored in the primary fuses. The fuse readout logic is configured to read the bit values by sensing the burn states of the primary fuses, and to conditionally correct the read bit values by sensing the burn states of one or more of the secondary fuses.
Information query