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參數(shù)資料
| 型號： | MSC1200V-01 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 30-Bit Duplex Controller/Driver with Digital/Analog Dimming and Keyscan Functions |
| 中文描述： | 30位雙控制器/驅(qū)動器，數(shù)字/模擬亮度和鍵盤掃描功能 |
| 文件頁數(shù)： | 16/26頁 |
| 文件大?。?/td> | 218K |
| 代理商： | MSC1200V-01 |
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Semiconductor
MSC1200-01/1200V-01
16/26
FEDL1200V-03
Keyscan
Keyscanning is started only when depression or release of any key is detected in order to
minimize noise caused by scanning signal. Then, keyscanning is continued until the keyscan
stop mode signal is sent from a microcomputer. The INT pin goes to the high level at the
completion of 1-cycle scanning after the keyscan start, so the (high level) signal sent from the INT
pin can be used as an interrupt signal.
[Keyscan Timing]
1 Cycle
INT
ROW 4
ROW 3
ROW 2
ROW 1
ROW 0
Depress/Release
Keyscan stop mode
is selected.
Note:
Keyscanning cannot be stopped by selecting the keyscan stop mode only once if:
- keyscanning is started after depression or release of any key is detected, and then
- a key is depressed or released again before the keyscan stop mode is selected.
To stop keyscanning, it is required to select the keyscan stop mode once again.
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