Invention Grant
US07284166B2 Programmable multi-mode built-in self-test and self-repair structure for embedded memory arrays
有权
可编程多模式内置自检和自修复结构的嵌入式存储器阵列
- Patent Title: Programmable multi-mode built-in self-test and self-repair structure for embedded memory arrays
- Patent Title (中): 可编程多模式内置自检和自修复结构的嵌入式存储器阵列
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Application No.: US11197989Application Date: 2005-08-05
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Publication No.: US07284166B2Publication Date: 2007-10-16
- Inventor: Rita Zappa , Carolina Selva , Danilo Rimondi , Cosimo Torelli
- Applicant: Rita Zappa , Carolina Selva , Danilo Rimondi , Cosimo Torelli
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
- Agent Lisa K. Jorgenson
- Priority: EP04425617 20040806
- Main IPC: G11C29/00
- IPC: G11C29/00

Abstract:
A built-in self-test and self-repair structure (BISR) of memory arrays embedded in an integrated device includes at least a test block (BIST) programmable to execute on a respective memory array of the device any of a certain number of test algorithms, and a self-repair block that includes a column address generator processing the faulty address information for allocating redundant resources of the tested memory array. The BISR may further include a redundancy register on which final redundancy information is loaded at each power-on of the device and control logic for managing data transfer from external circuitry to the built-in self-test and self-repair structure (BISR) and vice versa. The BIST structure serves any number of embedded memory arrays even of different types and sizes.
Public/Granted literature
- US20060031726A1 Programmable multi-mode built-in self-test and self-repair structure for embedded memory arrays Public/Granted day:2006-02-09
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