Title :
Sub-μW standby power, <18 µW/DMIPS@25MHz MCU with embedded atom-switch programmable logic and ROM
Author :
Tsuji, Y. ; Bai, X. ; Miyamura, M. ; Sakamoto, T. ; Tada, M. ; Banno, N. ; Okamoto, K. ; Iguchi, N. ; Sugii, N. ; Hada, H.
Author_Institution :
LEAP, Tsukuba, Japan
Abstract :
A non-volatile programmable logic (NPL) with atom switch significantly accelerates performance of micro-controller unit. A low-power 32bit-CPU using a 65 nm-node Silicon-on-Thin-Box (SOTB) CMOS performs 1.95 DMIPS/MHz and 33 μW/MHz on 25 MHz and VDD=0.4V. When a software process in the CPU is offloaded to NPL, the 9 times faster processing speed and 3 times higher energy efficiency are realized. A reverse body-bias on SOTB CMOS and a power-off of NPL block suppress a standby power down to 0.7 μW.
Keywords :
CMOS logic circuits; microcontrollers; programmable logic devices; read-only storage; CPU; DMIPS; Dhrystone million instructions per second; MCU; NPL; ROM; SOTB CMOS; embedded atom-switch programmable logic; energy efficiency; frequency 25 MHz; microcontroller unit; nonvolatile programmable logic; read only memory; reverse body-bias; silicon-on-thin box; size 65 nm; sub-μW standby power; voltage 0.4 V; word length 32 bit; CMOS integrated circuits; Energy efficiency; Random access memory; Read only memory; Software; Switches; Switching circuits; Atom switch; Energy efficiency; Low power; Non-volatile; Programmable logic array; Silicon-on-Thin-BOX;
Conference_Titel :
VLSI Technology (VLSI Technology), 2015 Symposium on
Conference_Location :
Kyoto
DOI :
10.1109/VLSIT.2015.7223636
