关键词: 异步电路, 微控制器, 去同步, 握手协议

Abstract: With the rapid development of semiconductor process，synchronous circuit designers have to deal with severe problems related to the clock skew，power-consumption，etc.Asynchronous design methodology is paid more and more attentions.Desynchronization technique is becoming a promising asynchronous design method since it could easily implement asynchronous circuit from synchronous circuit.This paper designs and implements an asynchronous 8051 microcontroller based on desynchronization technique.We address on the design flow and asynchronous controller design based on desynchronization technique.The analysis results show that in the same voltage and temperature condition，the performance of the asynchronous 8051 is almost the same as the corresponding synchronous 8051，while the power consumption is only half of the synchronous one.

Key words: asynchronous circuit, microcontroller, desynchronization, handshake protocols