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T89C51RD2-3CWC-L 데이터시트(PDF) 77 Page - ATMEL Corporation |
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T89C51RD2-3CWC-L 데이터시트(HTML) 77 Page - ATMEL Corporation |
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77 / 86 page ![]() 77 Rev. F - 15 February, 2001 T89C51RD2 9.5.3. External Program Memory Read Cycle Table 40. AC Parameters for a Variable Clock Symbol Type Standard Clock X2 Clock X parameter for -M range X parameter for -L range Units TLHLL Min 2 T - x T - x 10 10 ns TAVLL Min T - x 0.5 T - x 15 15 ns TLLAX Min T - x 0.5 T - x 15 15 ns TLLIV Max 4 T - x 2 T - x 30 30 ns TLLPL Min T - x 0.5 T - x 10 10 ns TPLPH Min 3 T - x 1.5 T - x 20 20 ns TPLIV Max 3 T - x 1.5 T - x 40 40 ns TPXIX Min x x 0 0 ns TPXIZ Max T - x 0.5 T - x 7 7 ns TAVIV Max 5 T - x 2.5 T - x 40 40 ns TPLAZ Max x x 10 10 ns TPLIV TPLAZ ALE PSEN PORT 0 PORT 2 A0-A7 A0-A7 INSTR IN INSTR IN INSTR IN ADDRESS OR SFR-P2 ADDRESS A8-A15 ADDRESS A8-A15 12 TCLCL TAVIV TLHLL TAVLL TLLIV TLLPL TPLPH TPXAV TPXIX TPXIZ TLLAX |
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