![•Bus Timing](/images/new-backgrounds/132795/1327959x1.webp)
2GB microSD Card + Reader P3 | ||
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•Bus Timing
| Parameter | Symbol |
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| Min |
| Max. | Unit | Remark | |
| Clock CLK (All values are referred to min (VIH) and max (VIL) |
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| Clock frequency Data Transfer Mode | fPP |
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| 0 | 25 | MHz | CL ≤ 100 pF, (7 cards) | ||
| Clock frequency Identification Mode | fOD |
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| 0 | 400 | KHz | CL ≤ 250 pF, (21 cards) | ||
| (The low freq. is required for MultiMediaCard |
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| Clock low time | tWL |
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| 10 |
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| ns | CL ≤ 100 pF, (7 cards) | |
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| 50 |
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| ns | CL ≤ 250 pF, (21 cards) | |
| Clock high time | tWH |
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| 10 |
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| ns | CL ≤ 100 pF, (7 cards) | |
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| 50 |
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| ns | CL ≤ 250 pF, (21 cards) | |
| Clock rise time | tTLH |
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| 10 | ns | CL ≤ 100 pF, (7 cards) | ||
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| 50 | ns | CL ≤ 250 pF, (21 cards) | ||
| Clock fall time | tTHL |
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| 10 | ns | CL ≤ 100 pF, (7 cards) | ||
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| 50 | ns | CL ≤ 250 pF, (21 cards) | ||
| Inputs CMD, DAT (referenced to CLK) |
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| Input | tISU |
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| 5 |
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| ns | CL ≤ 25 pF, (1 cards) | |
| Input hold time | tIH |
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| 5 |
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| ns | CL ≤ 25 pF, (1 cards) | |
| Outputs CMD, DAT (referenced to CLK) |
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| Output Delay time | tODLY |
| 0 |
| 14 | ns | CL ≤ 25 pF, (1 cards) | ||
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Transcend Information Inc.
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