9454笔记
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INC 加 1 ........................................................................................................................................................ 15
1、数据传送类指令...................................................................................................................12
CLR 清 0 ....................................................................................................................................................... 12 LD/LDC/LDE................................................................................................................................................ 13 LDCD/LDED/LDCI/LDEI ............................................................................................................................. 13 PUSH/POP 压栈/出栈................................................................................................................................... 14
2、算术操作类指令...................................................................................................................14
第 i 页 共 22 页
S3C9444/9454 笔记
五、S3C9444/S3C9454/S3F9454 中断 ........................................................................8
1、中断控制 2 种方法.................................................................................................................8 2、中断优先级.............................................................................................................................9 3、中断处理流程.........................................................................................................................9
四、S3C9444/S3C9454/S3F9454 控制寄存器 ............................................................7
表 4-1-1 系统控制寄存器............................................................................................................................... 7 系统标志寄存器： .......................................................................................................................................... 7 表 4-1-2 外围接口寄存器............................................................................................................................... 8
三、S3C9444/S3C9454/S3F9454 地址寻址： ............................................................5
1、寄存器寻址（R） ..................................................................................................................5 2、寄存器间接间接寻址（IR）.................................................................................................6 3、基址加偏址寻址模式（X） .................................................................................................. 6 4、直接寻址（DA） ................................................................................................................... 6 5、相对地址访问模式（RA） ...................................................................................................6 6、立即数访问模式（IM） ........................................................................................................ 6
SUB/SBC 减法/带进位减............................................................................................................................. 14 CP 比较 ........................................................................................................................... 15 DEC 减 1 ....................................................................................................................................................... 15
二、S3C9444/S3C9454/S3F9454 地址空间： ............................................................3
图 2-1 程序存储器ROM地址空间 ................................................................................................................. 3 图 2-3 片内RAM地址空间图 ......................................................................................................................... 5
River.Hoo
ADD….ADC (add with carry)........................................................................................................................ 14
3、逻辑操作类指令...................................................................................................................15
图 1-2 S3C9454B/F9454B封装：20-DIP ........................................................................................................ 2 图 1-10：P0 口引脚图 类型........................................................................................................................... 2
施密特触发器输入或推拉式输出开漏输出上拉电阻或下拉电阻可用软件设定
Hoo
2009.04.21 Joy.River
S3C9444/9454 笔记
目录
River.Hoo
一、S3C9444/S3C9454/S3F9454 概述及可利用接口资源： ....................................1
图 5-3 S3C9444/S3C9454/S3F9454 中断源 .................................................................................................. 10
六、SAM88RCRI指令集 ...............................................................................................10
杂注：.........................................................................................................................................10
表 6-4 关于指令符号的定义r Ir IRR等........................................................................................................ 11 表 6-6 条件转移代码UGE等 ........................................................................................................................ 12