| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
|---|
| 1 | DS1643-70 | Real-Time Clock | 185K |
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| 2 | DS1643-70 | Nonvolatile Timekeeping RAM | 187K |
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| 3 | DS1643-70 | Nonvolatile Timekeeping RAMs | 230K |
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| 4 | DS1643-70+ | Nonvolatile Timekeeping RAMs | 230K |
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