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Design of a 32nm 7T SRAM Cell based on CNTFET for low power operation

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3 Author(s)
Prasad, S.R. ; Dept. of ECE, ACE Eng. Coll., Hyderabad, India ; Madhavi, B.K. ; Kishore, K.L.

The SRAM which functions as the cache for system-on-chip is vital in the electronic industry. Carbon Nanotube FETs (CNTFETs) are considered to be the possible “beyond CMOS” device due to its 1-D transport properties that include low carrier scattering and ballistic transport. Therefore Design of SRAM Cell based on CNTFET is important for Low-power cache memory. In cells, the bit-lines are the most power consuming components because of larger power dissipation in driving long bit-line with large capacitance. The cache write consumes considerable large power due to full voltage swing on the bit-line. This Paper proposes a novel 7T SRAM cell based on CNTFET that only depends on one of bit lines for Write operation and reduce the write-power consumption. The read cycle also improved because of careful transistor sizing. HSPICE simulations of this circuit using Stanford CNFET model shows that 37.2% write power saving, read cycle improvement of 38.6%.

Published in:

Devices, Circuits and Systems (ICDCS), 2012 International Conference on

Date of Conference:

15-16 March 2012

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