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| DM9000E资料 | |
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DM9000E PDF Download |
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File Size : 116 KB
Manufacturer:DAVICOM Description:Data Output Control The usual state of the data output is the High-Z state. Whenever CAS is inactive (HIGH), Q will float (High-Z). Thus, CAS functions as data output control. After access time, in case of a Read cycle, the output is activated, and it contains the logic „0 or „1. Q is then valid until CAS returns into to inactive state (HIGH). The memory cycle being a Read, Read-Write or a Write cycle (W-con- trolled), Q changes from High-Z state to the active state („0 or „1). After the access time the contents of the selected cell is available, except for the Write cycle. The output remains active until CAS becomes inactive, irrespective of RAS becoming inactive or not. The memory cycle being a Write cycle (CAS-controlled), the data output keeps its High-Z state throughout the whole cycle. This configuration makes Q fully controllable by the user merely through the timing of W. The output storaging the data, they remain valid from the end of access time until the start of another cycle. |
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| 1PCS | 100PCS | 1K | 10K | ||
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型 号：DM9000E 厂 家：DAVICOM 封 装：QFP100 批 号：01 数 量：50 说 明：绝对原装正品底价 |
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运 费： 所在地： 新旧程度： |
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| 联系人：龙先生,胡小姐 |
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| 公司地址： 深圳市福田区中航路新亚洲电子商城国利大厦710室. |
