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AT89C5131A-RDTUM Datasheet(PDF) 169 Page - ATMEL Corporation |
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AT89C5131A-RDTUM Datasheet(HTML) 169 Page - ATMEL Corporation |
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169 / 188 page ![]() 169 4337K–USB–04/08 AT89C5130A/31A-M 27.4.6 External Data Memory Read Cycle 27.4.7 Serial Port Timing - Shift Register Mode Table 27-8. Symbol Description (F = 40 MHz) Table 27-9. AC Parameters for a Fix Clock (F = 40 MHz) Table 27-10. AC Parameters for a Variable Clock ALE PSEN RD PORT 0 PORT 2 A0-A7 DATA IN ADDRESS OR SFR-P2 T AVWL TLLWL T RLAZ ADDRESS A8-A15 OR SFR P2 TRHDZ T WHLH T RLRH T LLDV T RHDX T LLAX TAVDV Symbol Parameter T XLXL Serial port clock cycle time T QVHX Output data set-up to clock rising edge T XHQX Output data hold after clock rising edge T XHDX Input data hold after clock rising edge T XHDV Clock rising edge to input data valid Symbol Min Max Units TXLXL 300 ns T QVHX 200 ns T XHQX 30 ns T XHDX 0 ns T XHDV 117 ns Symbol Type Standard Clock X2 Clock X Parameter for -M Range Units T XLXL Min 12 T 6 T ns T QVHX Min 10 T - x 5 T - x 50 ns T XHQX Min 2 T - x T - x 20 ns T XHDX Min x x 0 ns T XHDV Max 10 T - x 5 T- x 133 ns |
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