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AT80C51RA2-RLSIV Datasheet(PDF) 65 Page - ATMEL Corporation |
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AT80C51RA2-RLSIV Datasheet(HTML) 65 Page - ATMEL Corporation |
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65 / 86 page  65 4188F–8051–01/08 AT/TS8xC51Rx2 Table 11-7. AC Parameters for a Variable Clock: derating formula 11.5.3 External Program Memory Read Cycle Figure 11-6. External Program Memory Read Cycle Symbol Type Standard Clock X2 Clock -M -V -L Units TLHLL Min 2 T - x T - x 10 8 15 ns TAVLL Min T - x 0.5 T - x 15 13 20 ns TLLAX Min T - x 0.5 T - x 15 13 20 ns TLLIV Max 4 T - x 2 T - x 30 22 35 ns TLLPL Min T - x 0.5 T - x 10 8 15 ns TPLPH Min 3 T - x 1.5 T - x 20 15 25 ns TPLIV Max 3 T - x 1.5 T - x 40 25 45 ns TPXIX Min x x 0 0 0 ns TPXIZ Max T - x 0.5 T - x 7 5 15 ns TAVIV Max 5 T - x 2.5 T - x 40 30 45 ns TPLAZ Max x x 10 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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