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

fYear

2015

fDate

16-18 June 2015

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 V_DD=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;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Technology (VLSI Technology), 2015 Symposium on

Conference_Location

Kyoto

ISSN

0743-1562

Type

conf

DOI

10.1109/VLSIT.2015.7223636

Filename

7223636