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參數資料
| 型號： | W77E468 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8 BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數： | 37/84頁 |
| 文件大小： | 531K |
| 代理商： | W77E468 |
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Preliminary W77E468
Publication Release Date: January 1999
- 37 - Revision A1
have only one byte instructions, yet they are two cycle instructions. One instruction which is of
importance is the MOVX instruction. In the standard 8032, the MOVX instruction is always two
machine cycles long. However in the W77E468, the user has a facility to stretch the duration of this
instruction from 2 machine cycles to 9 machine cycles. The RD and WR strobe lines are also
proportionately elongated. This gives the user flexibility in accessing both fast and slow peripherals
without the use of external circuitry and with minimum software overhead. The rest of the instructions
are either three, four or five machine cycle instructions. Note that in the W77E468, based on the
number of machine cycles, there are five different types, while in the standard 8032 there are only
three. However, in the W77E468 each machine cycle is made of only 4 clock periods compared to
the 12 clock periods for the standard 8032. Therefore, even though the number of categories has
increased, each instruction is at least 1.5 to 3 times faster than the standard 8032 in terms of clock
periods.
Single Cycle
C4
C3
C2
C1
CLK
ALE
PSEN
D7-0
A15-0
Address A15-0
Data_ in D7-0
Figure 3. Single Cycle Instruction Timing
相關PDF資料 |
PDF描述 |
|---|---|
| W77E516 | 8-BIT MICROCONTROLLER |
| W77E516-25 | 8-BIT MICROCONTROLLER |
| W77E516-40 | 8-BIT MICROCONTROLLER |
| W77E516F-25 | 8-BIT MICROCONTROLLER |
| W77E516F-40 | 8-BIT MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W77E468F-25 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
| W77E468F-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
| W77E516 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77E516-25 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77E516-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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