RTC - 4543 SA/SB
Unless specified otherwise: Ta = - 40 to +85 ° C, CL = 50 pF
Item |
| Symbol | VDD=5 V ± | 10 % | VDD=3 V ± | 10 % | Unit | ||
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| Min. |
| Max. | Min. |
| Max. |
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CLK clock cycle | tCLK | 0.75 |
| 7800 | 1.5 |
| 7800 | ∝ s | |
CLK low pulse width | tCLKL | 0.375 |
| 3900 | 0.75 |
| 3900 | ∝ s | |
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CLK high pulse width | tCLKH | 0.375 |
| 3900 | 0.75 |
| 3900 | ∝ s | |
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CLK setup time | tCLKS | 25 |
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| 50 |
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| ns | |
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CE setup time | tCES | 0.375 |
| 3900 | 0.75 |
| 3900 | ∝ s | |
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CE hold time | tCEH | 0.375 |
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| 0.75 |
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| ∝ s | |
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CE enable time | tCE |
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| 0.9 |
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| 0.9 | s | |
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Write data setup time | tSD | 0.1 |
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| 0.2 |
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| ∝ s | |
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Write data hold time | tHD | 0.1 |
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| 0.1 |
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| ∝ s | |
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WR setup time | tWRS | 100 |
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| 100 |
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| ns | |
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WR hold time | tWRH | 100 |
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| 100 |
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| ns | |
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DATA output delay time | tDATD |
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| 0.2 |
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| 0.4 | ∝ s | |
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DATA output floating time | tDZ |
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| 0.1 |
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| 0.2 | ∝ s | |
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Clock input rise time | tr1 |
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| 50 |
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| 100 | ns | |
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Clock input fall time | tf1 |
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| 50 |
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| 100 | ns | |
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FOUT rise time | (CL=30 pF) | tr2 |
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| 100 |
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| 200 | ns |
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FOUT fall time | (CL=30 pF) | tf2 |
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| 100 |
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| 200 | ns |
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Disable time | (CL=30 pF) | tXZ |
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| 100 |
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| 200 | ns |
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Enable time | (CL=30 pF) | tZX |
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| 100 |
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| 200 | ns |
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FOUT duty ratio (CL=30 pF) | Duty | 40 |
| 60 | 40 |
| 60 | % | |
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Wait time | tRCV | 0.95 |
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| 1.9 |
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| ∝ s | |
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Page - 4 | MQ - 252 - 03 |