Title :
Dual-VCC 8T-bitcell SRAM array in 22nm tri-gate CMOS for energy-efficient operation across wide dynamic voltage range
Author :
Kulkarni, Jitendra ; Khellah, Muhammad M. ; Tschanz, James ; Geuskens, Bibiche ; Jain, R. ; Kim, Sungho ; De, Vivek
Author_Institution :
Circuit Res. Lab., Intel Corp., Hillsboro, OR, USA
Abstract :
A 14KB 8T-bitcell SRAM array is demonstrated in 22nm tri-gate CMOS with fine-grain dual-VCC assist techniques. VMIN limiting 8T-bitcell nodes are boosted selectively during read and write to improve overall chip-VMIN. Measurements show 130-270mV lower VMIN with 27-46% lower power at 0.4-1.6GHz for varying amounts of boosting, array activity and voltage regulator efficiency.
Keywords :
CMOS memory circuits; SRAM chips; UHF integrated circuits; array activity; dual-VCC 8T-bitcell SRAM array; dynamic voltage range; energy-efficient operation; fine-grain dual-VCC assist techniques; frequency 0.4 GHz to 1.6 GHz; size 22 nm; tri-gate CMOS; voltage 130 mV to 270 mV; voltage regulator efficiency; Arrays; Boosting; CMOS integrated circuits; Delays; Energy efficiency; Random access memory; Voltage control;
Conference_Titel :
VLSI Technology (VLSIT), 2013 Symposium on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4673-5226-0
