An Energy-efficient Capacitive-RRAM Content Addressable Memory
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866916395276566528 |
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| author | Pan, Yihan Wheeldon, Adrian Mughal, Mohammed Agwa, Shady Prodromakis, Themis Serb, Alexantrou |
| author_facet | Pan, Yihan Wheeldon, Adrian Mughal, Mohammed Agwa, Shady Prodromakis, Themis Serb, Alexantrou |
| contents | Content addressable memory is popular in intelligent computing systems as it allows parallel content-searching in memory. Emerging CAMs show a promising increase in bitcell density and a decrease in power consumption than pure CMOS solutions. This article introduced an energy-efficient 3T1R1C TCAM cooperating with capacitor dividers and RRAM devices. The RRAM as a storage element also acts as a switch to the capacitor divider while searching for content. CAM cells benefit from working parallel in an array structure. We implemented a 64 x 64 array and digital controllers to perform with an internal built-in clock frequency of 875MHz. Both data searches and reads take three clock cycles. Its worst average energy for data match is reported to be 1.71fJ/bit-search and the worst average energy for data miss is found at 4.69fJ/bit-search. The prototype is simulated and fabricated in 0.18um technology with in-lab RRAM post-processing. Such memory explores the charge domain searching mechanism and can be applied to data centers that are power-hungry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_09207 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | An Energy-efficient Capacitive-RRAM Content Addressable Memory Pan, Yihan Wheeldon, Adrian Mughal, Mohammed Agwa, Shady Prodromakis, Themis Serb, Alexantrou Systems and Control Image and Video Processing Content addressable memory is popular in intelligent computing systems as it allows parallel content-searching in memory. Emerging CAMs show a promising increase in bitcell density and a decrease in power consumption than pure CMOS solutions. This article introduced an energy-efficient 3T1R1C TCAM cooperating with capacitor dividers and RRAM devices. The RRAM as a storage element also acts as a switch to the capacitor divider while searching for content. CAM cells benefit from working parallel in an array structure. We implemented a 64 x 64 array and digital controllers to perform with an internal built-in clock frequency of 875MHz. Both data searches and reads take three clock cycles. Its worst average energy for data match is reported to be 1.71fJ/bit-search and the worst average energy for data miss is found at 4.69fJ/bit-search. The prototype is simulated and fabricated in 0.18um technology with in-lab RRAM post-processing. Such memory explores the charge domain searching mechanism and can be applied to data centers that are power-hungry. |
| title | An Energy-efficient Capacitive-RRAM Content Addressable Memory |
| topic | Systems and Control Image and Video Processing |
| url | https://arxiv.org/abs/2401.09207 |