32位浮点嵌入式MCU设计研究  

Design of a 32-Bit Floating Point Embedded MCU

作　　者：唐明哲[1] 邵志标[1] 赵宁[2] 许琪[2] 

机构地区：[1]西安交通大学电子系,陕西西安710049 [2]西安微电子技术研究所,陕西西安710054

出　　处：《微电子学与计算机》2004年第7期30-33,共4页Microelectronics & Computer

基　　金：总装备部科研项目(010STJ003)

摘　　要：本文介绍了一个基于RISC体系结构的32位浮点嵌入式MCU的设计实现。该MCU内含128kbit的SRAM、采用哈佛结构、四级指令流水线、32位指令字长和内部43位数据字长。MCU内部设置多个快速寄存器及采用硬连线逻辑代替微程序控制的方法,加快了微处理器的速度,提高了指令执行效率。设计中还采用对寄存器同步写、异步读的方式避免了数据相关问题。A top-down design of a 32-bit floating point embedded MCU based on RISC structure is presented. This MCU includes 128k bits SRAM, has the Havard structure, 4-stage pipeline, 32-bit instruction and 43-bit internal data. The speed and instruction efficiency of the MCU have been greatly improved by setting multiple high-speed working registers, replacing micro-program with hard-wired logic. The problem of data impact is solved by synchronously writing and asynchronously reading of the registers.

关 键 词：微控制器 浮点 RISC SRAM 

分 类 号：TN47[电子电信—微电子学与固体电子学] TN431.2