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參數資料
| 型號： | DEM16217SYH |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Display Elektronik GmbH |
| 中文描述： | 顯示器經銷商公司 |
| 文件頁數： | 12/21頁 |
| 文件大小： | 251K |
| 代理商： | DEM16217SYH |
DEM 16217 SYH
Product specification
9. INTERFACE WITH MPU IN BUS MODE
1). Interface with 8-bit MPU
When interface data length are 8-bits , transfer is performed all at once through 8 ports. From DB0 to DB7 .
An Example of timing sequence is shown below .
2) Interface with 4-bits MPU
When interfacing data length aref 4-bits , only 4 ports, from DB4 to DB7 , are used as data bus .
At first, higher 4-bit (in case of 8-bit bus mode, the contents of DB4~DB7) are transferred, and then the lower 4-bit
(in case of 8-bit bus mode, the contents of DB0~DB3) are transferred. So transfer is performed in two parts. Busy
Flag outputs"1" after the second transfer are ended.
Example of timing sequence is shown below .
RS
R/W
E
internal Singnal
DB7
internal Operation
Data
Data
Busy
Busy
No
Busy
instruction
Busy Flag
check
instruction
Busy Flag
check
Busy Flag
check
RS
R/W
E
internal Singnal
DB7
internal Operation
Busy
No
Busy
instruction
Busy Flag check
instruction
Busy Flag Check
Figure 5.0 Example or 8-bit bus mode timing Diagram
Figure 6.0 Example or 4-bit bus mode timing Diagram
VERSION : 1
10
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| DEM2V2PN | 功能描述:D-Sub標準連接器 RoHS:否 制造商:Omron Electronics 位置/觸點數量:9 排數:2 型式:Female 安裝風格:Through Hole 安裝角:Right 端接類型:Solder 過濾: |
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