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參數資料
型號: W921E840
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-Bit Microcontroller(4位的微控制器)
中文描述: 4-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁數: 53/64頁
文件大小: 603K
代理商: W921E840
W921E840
Publication Publication Release Date: August 1997
- 53 - Revision A1
10.2.3 Working Register Addressing Mode: (1 word/1 cycle)
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.
10.3 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.
b3 b2 b1 b0
b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
b7 b6 b5 b4 b3 b2 b1 b0
decoder code
b3 b2 b1 b0
b11 b10 b9 b8
b12
0
ROM ADDRESS
(0 to 4K)
b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
b3 b2 b1 b0
b3 b2 b1 b0
OP2
OP1
X Y
X
Y
0
0
0
1
1
0
1
1
OP2
OP1
Disable
Disable
B register
A register
Port P2
Both
I3 to I0
B register
A register
ROM CODE
ROM CODE
ROM Code Output to Register or Port
A register
Disable
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相關代理商/技術參數
參數描述
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