本文介绍了一个低成本大的8 位嵌入式微控制器内核设计，设计采用哈佛结构，双数据总线，指令系统兼容CYASM 指令集。本文针对减小面积以实现低成本的目的，详细介绍了系统结构及各模块的设计思想和改进方法。关键词: 微控制器；算术逻辑单元；低成本；复杂指令集；Design of an 8-bit Low-Cost Embedded MCU core Wei Wei1, Jiang An-ping1, Lu Tie-jun2 ，Zong Yu2 (1. School of EECS，Peking University, Beijing100817, China; 2. Beijing Microelectronics Technology Institute, Beijing100076, China) Abstract： A design of 8-bit low cost embedded MCU is presented in this paper. The core the Harvard structure, two data bus, which is compatible with CYASM instruction. Aim at reducing area to achieving the aim of low cost; the design idea and improved method of the MCU structure and its specific units are introduced in detail.Key words： MCU；ALU ；Low-cost；CISC；
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