Abstract
The design and architectures of a microcode-based memory BIST and programmable FSM-based memory BIST unit are presented. The proposed microcode-based memory BIST unit is more efficient and flexible than existing architectures. Test logic overhead of the proposed programmable versus nonprogrammable memory BIST architectures is evaluated. The proposed programmable memory BIST architectures could be used to test memories in different stages of their fabrication and therefore result in lower overall memory test logic overhead. We show that the proposed microcode-based memory BIST architecture has better extendibility and flexibility while having less test logic overhead than the programmable PSM-based memory BIST architecture.
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