LM3S800微控制器数据手册

Kenvint

　　目录

　　关于本文档......................................................................................................................................15

　　读者....................................................................................................................................................15

　　关于本手册..........................................................................................................................................15

　　相关文档..............................................................................................................................................15

　　文档约定..............................................................................................................................................15

　　1结构概述...............................................................................................................................17

　　1.1产品特性..................................................................................................................................17

　　1.2目标应用..................................................................................................................................21

　　1.3高级方框图...............................................................................................................................21

　　1.4功能概述..................................................................................................................................22

　　1.4.1ARMCortex™-M3.....................................................................................................................23

　　1.4.2电机控制外设............................................................................................................................23

　　1.4.3模拟外设..................................................................................................................................24

　　1.4.4串行通信外设............................................................................................................................24

　　1.4.5系统外设..................................................................................................................................25

　　1.4.6存储器外设...............................................................................................................................26

　　1.4.7其他特性..................................................................................................................................26

　　1.4.8硬件细节..................................................................................................................................26

　　2ARMCortex-M3处理器内核................................................................................................28

　　2.1方框图.....................................................................................................................................29

　　2.2功能描述..................................................................................................................................29

　　2.2.1串行线和JTAG调试....................................................................................................................29

　　2.2.2嵌入式跟踪宏单元（ETM）.......................................................................................................29

　　2.2.3跟踪端口的接口单元（TPIU）...................................................................................................29

　　2.2.4ROM表....................................................................................................................................30

　　2.2.5存储器保护单元（MPU）...........................................................................................................30

　　2.2.6嵌套向量中断控制器（NVIC）...................................................................................................30

　　3存储器映射...........................................................................................................................33

　　4中断.....................................................................................................................................35

　　5JTAG接口............................................................................................................................37

　　5.1方框图.....................................................................................................................................38

　　5.2功能描述..................................................................................................................................38

　　5.2.1JTAG接口管脚.........................................................................................................................38

　　5.2.2JTAGTAP控制器......................................................................................................................40

　　5.2.3移位寄存器...............................................................................................................................41

　　5.2.4操作时的注意事项（OperationalConsiderations）......................................................................41

　　5.3初始化和配置............................................................................................................................41

　　5.4寄存器描述...............................................................................................................................42

　　5.4.1指令寄存器（IR）.....................................................................................................................42

　　5.4.2数据寄存器...............................................................................................................................43

　　6系统控制...............................................................................................................................45

　　6.1功能描述..................................................................................................................................45

　　6.1.1器件标识..................................................................................................................................45

　　6.1.2复位控制..................................................................................................................................45

　　四月10,20083

　　
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