SPRS292A − OCTOBER 2005 − REVISED NOVEMBER 2005
SYNCHRONOUS-BURST MEMORY TIMING
timing requirements for | (see Figure 29) |
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| ZDPA−167 |
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NO. |
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| −200 |
| UNIT |
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| −250 |
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| MIN | MAX |
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6 | Setup time, read EDx valid before ECLKOUT high |
| 1.5 |
| ns | |
7 | Hold time, read EDx valid after ECLKOUT high |
| 2.5 |
| ns |
†The SBSRAM interface takes advantage of the internal burst counter in the SBSRAM. Accesses default to incrementing
switching characteristics over recommended operating conditions for
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| ZDPA−167 |
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NO. |
| PARAMETER | −200 |
| UNIT | ||||||||||||||||||
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| −250 |
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| MIN | MAX |
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1 | Delay time, ECLKOUT high to |
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| valid | 1.2 | 7 | ns | |||||||||||||
CEx |
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2 | Delay time, ECLKOUT high to |
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| valid |
| 7 | ns | |||||||||||||
BEx |
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3 | Delay time, ECLKOUT high to |
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| invalid | 1.2 |
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BEx |
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4 | Delay time, ECLKOUT high to EAx valid |
| 7 | ns | |||||||||||||||||||
5 | Delay time, ECLKOUT high to EAx invalid | 1.2 |
| ns | |||||||||||||||||||
8 | Delay time, ECLKOUT high to |
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| 1.2 | 7 | ns | |
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| ARE/SDCAS/SSADS valid | ||||||||||||||||||
9 | Delay time, ECLKOUT high to, |
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| 1.2 | 7 | ns | ||
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| AOE/SDRAS/SSOE valid | ||||||||||||||||||||
10 | Delay time, ECLKOUT high to |
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| valid |
| 7 | ns | ||||||||||||||
EDx |
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11 | Delay time, ECLKOUT high to |
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| invalid | 1.2 |
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EDx |
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12 | Delay time, ECLKOUT high to |
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| 1.2 | 7 | ns | |
AWE/SDWE/SSWE valid |
†The SBSRAM interface takes advantage of the internal burst counter in the SBSRAM. Accesses default to incrementing
‡ARE/SDCAS/SSADS, AOE/SDRAS/SSOE, and AWE/SDWE/SSWE operate as SSADS, SSOE, and SSWE, respectively, during SBSRAM accesses.
74 | POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 |