K. Osada et al., Universal-V-dd 0.65-2.0-V 32-kB cache using a voltage-adapted timing-generation scheme and a lithographically symmetrical cell, IEEE J SOLI, 36(11), 2001, pp. 1738-1744
A universal-V-dd 32-kB four-way-set-associative embedded cache has been dev
eloped. A test cache chip was fabricated by using 0.18-mum enhanced CMOS te
chnology, and it was found to continuously operate from 0.65 to 2.0 V Its o
perating frequency and power are from 120 MHz and 1.7 mW at 0.65 V to 1.04
GHz and 530 mW at 2.0 V The cache is based on two new circuit techniques: a
voltage-adapted timing-generation scheme with plural dummy cells for the w
ider voltage-range operation, and use of a lithographically symmetrical cel
l for lower voltage operation.