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DS80C310 数据表(PDF) 14 Page - Dallas Semiconductor |
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DS80C310 数据表(HTML) 14 Page - Dallas Semiconductor |
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14 / 22 page ![]() DS80C310 14 of 22 MOVX CHARACTERISTICS VARIABLE CLOCK PARAMETER SYMBOL MIN MAX UNITS STRETCH (Note 1) 1.5tCLCL-5 tMCS=0 Data Access ALE Pulse Width tLHLL2 2tCLCL-5 ns tMCS>0 0.5tCLCL-5 tMCS=0 Port 0 Address Valid to ALE Low tAVLL2 tCLCL-5 ns tMCS>0 0.5tCLCL-15 tMCS=0 Address Hold after ALE Low for MOVX Write tLLAX2 tCLCL-7 ns tMCS>0 2tCLCL-5 tMCS=0 RD Pulse Width tRLRH tMCS-10 ns tMCS>0 2tCLCL-5 tMCS=0 WR Pulse Width tWLWH tMCS-10 ns tMCS>0 2tCLCL-20 tMCS=0 RD Low to Valid Data In tRLDV tMCS-20 ns tMCS>0 Data Hold after Read tRHDX 0 ns tCLCL-5 tMCS=0 Data Float after Read tRHDZ 2tCLCL-5 ns tMCS>0 2.5tCLCL-28 tMCS=0 ALE Low to Valid Data In tLLDV tCLCL+tMCS-40 ns tMCS>0 3tCLCL-22 tMCS=0 Port 0 Address to Valid Data In tAVDV1 2.0tCLCL+ tMCS - 25 ns tMCS>0 3.5tCLCL-35 tMCS=0 Port 2 Address to Valid Data In tAVDV2 2.5tCLCL+ tMCS- 35 ns tMCS>0 0.5tCLCL-14 0.5tCLCL+5 tMCS=0 ALE Low to RD or WR Low tLLWL tCLCL-8 tCLCL+5 ns tMCS>0 tCLCL-9 tMCS=0 Port 0 Address to RD or WR Low tAVWL1 2tCLCL-8 ns tMCS>0 1.5tCLCL-10 tMCS=0 Port 2 Address to RD or WR Low tAVWL2 2.5tCLCL-10 ns tMCS>0 Data Valid to WR Transition tQVWX -14 ns tCLCL-11 tMCS=0 Data Hold after Write tWHQX 2tCLCL-10 ns tMCS>0 RD Low to Address Float tRLAZ (Note 2) ns 0 10 tMCS=0 RD or WR High to ALE High tWHLH tCLCL-5 tCLCL+9 ns tMCS>0 Note 1: tMCS is a time period related to the stretch memory cycle selection. The following table shows the value of tMCS for each stretch selection. M2 M1 M0 MOVX CYCLES tMCS 0 0 0 2 machine cycles 0 0 0 1 3 machine cycles (default) 4 tCLCL 0 1 0 4 machine cycles 8 tCLCL 0 1 1 5 machine cycles 12 tCLCL 1 0 0 6 machine cycles 16 tCLCL 1 0 1 7 machine cycles 20 tCLCL 1 1 0 8 machine cycles 24 tCLCL 1 1 1 9 machine cycles 28 tCLCL |
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