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This paper outlines the RC-filtered stress-decoupled (RCSD) 4T2R nonvolatile TCAM (nvTCAM) with the following benefits: 1) reduced NVM-stress; 2) reduced ML parasitic load; and 3) suppression of match-line (ML) leakage current from match cells. The RCSD-4T2R cell achieves a 6$\times $ reduction in NVM-stress, a 2$\times $ increase in maximum wordlength, and a 2$\times $ reduction in search delay...
Ternary content-addressable memory (TCAM) is used in search engines for network and big-data processing [1]–[6]. Nonvolatile TCAM (nvTCAM) was developed to reduce cell area (A), search energy (ES), and standby power beyond what can be achieved using SRAM-based TCAM (sTCAM) [1]–[2]: particularly in applications with long idle times and frequent-search-few-write operations. nvTCAMs were previously designed...
Many big-data (BD) processors reduce power consumption by employing ternary content-addressable-memory (TCAM) [1-2] with pre-stored signature patterns as filters to reduce the amount of data sent for processing in the following stage (i.e., wireless transmission). To further reduce standby power, BD-processors commonly use nonvolatile memory (NVM) to back up the signature patterns of SRAM-based TCAM...
This study proposes an RC-filtered stress-decoupled (RCSD) 4T2R nonvolatile TCAM (nvTCAM) to 1) suppress match-line (ML) leakage current from match cells (IML-M), 2) reduce ML parasitic load (CML), 3) decouple NVM-stress from wordlength (WDL) and IML-MIS. RCSD reduces NVM-stress by 7+x, and achieves a 4+x improvement in speed-WDL-capacity-product. A 128×32b RCSD nvTCAM macro was fabricated using HfO...
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