Invention Grant
- Patent Title: Area efficient parallel test data path for embedded memories
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Application No.: US15434717Application Date: 2017-02-16
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Publication No.: US09899103B2Publication Date: 2018-02-20
- Inventor: Prakash Narayanan , Nikita Naresh , Vaskar Sarkar , Rajat Mehrotra
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Kenneth Liu; Charles A. Brill; Frank D. Cimino
- Priority: IN5871/CHE/2015 20151030
- Main IPC: G11C7/00
- IPC: G11C7/00 ; G11C29/12

Abstract:
A built-in self-test (BIST) parallel memory test architecture for an integrated circuit, such as a system-on-a-chip (SoC), is disclosed. A BIST controller generates a test data pattern for memories of a common memory type, with this test data pattern forwarded to the memories, with pipeline delay stages inserted in the data path according to the operational speed of the memory in its normal operation. The expected data response of these memories, when read, and corresponding to this test data pattern is delayed for a group of memories by a local delay response generator shared by those memories. For example, the memories in the group of memories may be physically near one another. The local delay response generator delays the expected data response by a delay corresponding to the memory latency of those memories in the group, before applying the expected data response to local comparators associated with the memories in the group.
Public/Granted literature
- US20170157524A1 AREA EFFICIENT PARALLEL TEST DATA PATH FOR EMBEDED MEMORIES Public/Granted day:2017-06-08
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