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M28C256-12BS1T Datasheet(PDF) 9 Page - STMicroelectronics |
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M28C256-12BS1T Datasheet(HTML) 9 Page - STMicroelectronics |
9 / 21 page Symbol Alt Parameter Test Condition M28256 Unit -90 -12 -15 -20 min max min max min max min max tAVQV tACC Address Valid to Output Valid E= VIL,G = VIL 90 120 150 200 ns tELQV tCE Chip Enable Low to Output Valid G= VIL 90 120 150 200 ns tGLQV tOE Output Enable Low to Output Valid E=VIL 40 45 50 50 ns tEHQZ (1) tDF Chip Enable High to Output Hi-Z G= VIL 0 40 0 45 0 50 0 50 ns tGHQZ (1) tDF Output Enable High to Output Hi-Z E= VIL 0 40 0 45 0 50 0 50 ns tAXQX tOH Address Transition to Output Transition E=VIL,G = VIL 0000 ns Note: 1. Output Hi-Z is defined as the point at which data is no longer driven. Table 10. Read Mode AC Characteristics (TA = 0 to 70 °C or –40 to 85°C; VCC = 4.5V to 5.5V) Symbol Alt Parameter Test Condition M28256-W Unit -12 -15 -20 -25 min max min max min max min max tAVQV tACC Address Valid to Output Valid E= VIL,G = VIL 120 150 200 250 ns tELQV tCE Chip Enable Low to Output Valid G= VIL 120 150 200 250 ns tGLQV tOE Output Enable Low to Output Valid E=VIL 45 70 80 100 ns tEHQZ (1) tDF Chip Enable High to Output Hi-Z G= VIL 0 45 0 50 0 55 0 60 ns tGHQZ (1) tDF Output Enable High to Output Hi-Z E= VIL 0 45 0 50 0 55 0 60 ns tAXQX tOH Address Transition to Output Transition E=VIL,G = VIL 0000 ns Note: 1. Output Hi-Z is defined as the point at which data is no longer driven. Table 11. Read Mode AC Characteristics (TA = 0 to 70 °C or –40 to 85°C; VCC = 2.7V to 3.6V) 9/21 M28256 |
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