A 0.9-V microcontroller for portable applications

Author

Wild, Andreas ; Quigley, John ; Feddeler, James ; Ledford, Steven ; Caravella, James ; Shapiro, Fred ; Gilsdorf, Ben ; Hong, Merit ; Mietus, Dave ; Davies, Robert B. ; Parmar, Rajiv ; Tai, Jy-Der ; Thomas, Jim ; Quarberg, June ; Hartung, Eytan ; Sawan, To

Author_Institution

SPS Technol., Motorola Inc., Mesa, AZ, USA

Volume

32

Issue

7

fYear

1997

fDate

7/1/1997 12:00:00 AM

Firstpage

1049

Lastpage

1055

Abstract

A 0.9-1.6-V, 1-MHz, 8-b microcontroller based on the 68HC08 architecture is presented. In addition to standard digital microcontroller functions, the chip features RAM, ROM, phase-locked loop (PLL) clock synthesis, and liquid crystal displays (LCD) drive capabilities operating from the voltage supply range of a single AA or AAA battery. The design used a library of CMOS microcontroller building blocks, converted into a low-voltage technology using unilateral transistors. The design approach was to optimize the conversion strategy for each functional block and to provide new designs when the conversion was insufficient. The chip exceeded specifications with blocks showing full functionality down to 0.7 V

Keywords

CMOS digital integrated circuits; microcontrollers; 0.9 to 1.6 V; 1 MHz; 68HC08 architecture; 8 bit; CMOS digital microcontroller; RAM; ROM; design; liquid crystal displays drive; low-voltage technology; one-cell battery; phase-locked loop clock synthesis; portable applications; unilateral transistor; Batteries; CMOS technology; Clocks; Drives; Liquid crystal displays; Microcontrollers; Phase locked loops; Read only memory; Software libraries; Voltage;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.597295

Filename

597295