RTC - 4543 SA/SB
( 1 ) Data read
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| tCE |
WR | tWRS |
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| tWRH |
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CE |
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| tCES | tCLK |
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| tCEH |
CLK |
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| tRCV |
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tCLKS | tCLKH | tCLKL | tr1 | tf1 | tDZ |
DATA |
| tDATD |
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( 2 ) Data write |
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| tCE |
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WR | tWRS |
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| tWRH |
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CE |
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| tCES | tCLK |
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| tCEHtRCV |
CLK | tCLKH | tCLKL |
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tCLKS | tr1 | tf1 |
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tHD |
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| tSD |
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DATA
( 3 ) FOUT output
| tH |
| tf2 |
FOUT | 90% |
50% | |
| 10% |
| tr2 |
t
Duty = tHt ⋅ 100 [%]
( 4 ) Disable/enable
FOE |
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| VIH | Enable | |
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| Disable |
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VIL |
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tXZ |
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| tZX |
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| High impedance |
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FOUT
Page - 5 | MQ - 252 - 03 |