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DS2155 Datasheet(PDF) 227 Page - Dallas Semiconductor |
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DS2155 Datasheet(HTML) 227 Page - Dallas Semiconductor |
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227 / 238 page  DS2155 227 of 238 37.2 Nonmultiplexed Bus AC Characteristics AC CHARACTERISTICS: NONMULTIPLEXED PARALLEL PORT (MUX = 0) (Figure 37-4, Figure 37-5, Figure 37-6, and Figure 37-7) (VDD = 3.3V ±5%, TA = 0°C to +70°C for DS2155L; VDD = 3.3V ±5%, TA = -40°C to +85°C; for DS2155LN.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Setup Time for A0 to A7, Valid to CS Active t1 0 ns Setup Time for CS Active to Either RD, WR, or DS Active t2 0 ns Delay Time from Either RD or DS Active to Data Valid t3 75 ns Hold Time from Either RD, WR, or DS Inactive to CS Inactive t4 0 ns Hold Time from CS Inactive to Data Bus Tri-State t5 5 20 ns Wait Time from Either WR or DS Active to Latch Data t6 75 ns Data Setup Time to Either WR or DS Inactive t7 10 ns Data Hold Time from Either WR or DS Inactive t8 10 ns Address Hold from Either WR or DS Inactive t9 10 ns |
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