A low power asynchronous java processor for contactless smart card

This paper presents the design of a low power 16-hit asynchronous java processor for contactless smart card. It can directly execute the java bytecodes in a subset ofthe instruction set defined in the Java Card Virtual Machine specification 111 The remaining java bytecodes are handled by software routines. Also, we intend to use asynchronous circuit design technique to reduce the power Consumption of the java processor core. It has been fabricated in a CMOS 0.35-μm technology and the experimental result shows that it is suitable for the contactless smart card.