SDHC Card series
4~32GB High Capacity Secure Digital Card
•Bus Timing
Parameter
Symbol
Min
Max.
Unit
Remark
Clock CLK (All values are referred to min (VIH) and max (VIL)
| Clock frequency Data Transfer Mode | fPP | 0 | 25 | MHz | CCARD ≤ 10 pF, (1 card) |
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| Clock frequency Identification Mode | fOD | 0(1)/100 | 400 | KHz | CCARD ≤ 10 pF, (1 card) |
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| Clock low time | tWL | 10 |
| ns | CCARD ≤ 10 pF, (1 card) |
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| Clock high time | tWH | 10 |
| ns | CCARD ≤ 10 pF, (1 card) |
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| Clock rise time | tTLH |
| 10 | ns | CCARD ≤ 10 pF, (1 card) |
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| Clock fall time | tTHL |
| 10 | ns | CCARD ≤ 10 pF, (1 card) |
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| Inputs CMD, DAT (referenced to CLK) |
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| Input | tISU | 5 |
| ns | CCARD ≤ 10 pF, (1 card) |
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| Input hold time | tIH | 5 |
| ns | CCARD ≤ 10 pF, (1 card) |
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| Outputs CMD, DAT (referenced to CLK) |
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Transcend Information Inc. |
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