參數(shù)資料
型號: W921C840
英文描述: Microcontroller
中文描述: 微控制器
文件頁數(shù): 43/53頁
文件大?。?/td> 394K
代理商: W921C840
W921E400A/W921C400
Publication Release Date: July 1999
- 43 -
Revision A3
9.2.1 Direct Addressing Mode: (2 words/2 cycles)
b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
decoder code
ROM CODE
RAM ADDRESS
9.2.2 Indirect Addressing Mode: (1 word / 1 cycle)
Instruction: MOV A, Mx; MOV B, Mx; MOV Mx, A; MOV Mx, B; ..., etc.
0 b0
0 b8 b7 b6 b5 b4 b3 b2 b1 b0
b3 b2 b1 b0
b3 b2 b1 b0
U
Register
V
Register
W
Register
RAM ADDRESS
9.2.3 Working Register Addressing Mode: (1 word / 1 cycle)
Instruction: MOV A, @M; MOV B, @M; MOV @M, A; ..., etc.
b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
decoder code
0 0 0 1 0 0 m3 m2 m1 m0
ROM CODE
RAM ADDRESS
Instruction: MOV A, WRn; MOV WRn, A; ..., etc.
9.3 Look-up Table Addressing Mode (1 word/2 cycles)
There is one special function look-up table addressing mode in this chip, the instruction is TBL I and
the function is shown in the following table.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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W921E840A 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT MICROCONTROLLER