Content-addressable memory using selective-charging and adaptive-discharging scheme for low-power hardware search engine

Hussain, Sheikh Wasmir; Mahendra, Telajala Venkata; Mishra, Sandeep; Dandapat, Anup

doi:10.1016/j.vlsi.2024.102213

Integration

2024

DOI: 10.1016/j.vlsi.2024.102213

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Content-addressable memory using selective-charging and adaptive-discharging scheme for low-power hardware search engine

Sheikh Wasmir Hussain,

Telajala Venkata Mahendra,

Sandeep Mishra

et al.

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0.765-FJ/Bit/Search Content Addressable Memory Using Search Line Pre-Charge-Free (SLPF) Scheme

Navaneethakrishnan,

Santhanalakshmi

2024

J CIRCUIT SYST COMP

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Content Addressable Memories (CAMs) are high-speed hardware lookup tables that are crucial in routing, packet classification, search, and other fast look-up applications. Despite having the advantage of high speed, they have limitations due to their power hungriness. This paper addresses the limitations of existing CAMs with two novel modifications in the proposed Search Line Pre-Charge-Free Low-Power-Content Addressable Memory (SLPFCAM) structure. The first novelty is their gated evaluation matching circuit and the second is a match line pre-charge controller. The proposed design reduces the energy consumption and improves the speed of the CAM by eliminating the SLprecharge phase in the CAM operation. The pre-charge controller prevents the attempt of match line pre-charge when it is not required. The design has been implemented using Cadence Virtuoso in a 90-nm CMOS technology with 1-V supply, and the post-layout simulation results show that the SLPFCAM makes significant improvements with a minimum of 83% less power consumption, a 91% less search delay, and the average energy consumption being 0.765 fJ/bit/search.

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0.765-FJ/Bit/Search Content Addressable Memory Using Search Line Pre-Charge-Free (SLPF) Scheme

Navaneethakrishnan,

Santhanalakshmi

2024

J CIRCUIT SYST COMP

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Content-addressable memory using selective-charging and adaptive-discharging scheme for low-power hardware search engine

Cited by 1 publication

References 24 publications

0.765-FJ/Bit/Search Content Addressable Memory Using Search Line Pre-Charge-Free (SLPF) Scheme

0.765-FJ/Bit/Search Content Addressable Memory Using Search Line Pre-Charge-Free (SLPF) Scheme

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