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M28W640FCB 데이터시트(PDF) 38 Page - STMicroelectronics |
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M28W640FCB 데이터시트(HTML) 38 Page - STMicroelectronics |
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38 / 77 page ![]() DC and AC parameters M28W640FCT, M28W640FCB 38/77 Figure 8. Read AC waveforms Table 16. Read AC characteristics Symbol Alt Parameter M28W640FCT, M28W640FCB Unit 70 85 90 10 tAVAV tRC Address Valid to Next Address Valid Min 70 85 90 100 ns tAVQV tACC Address Valid to Output Valid Max 70 85 90 100 ns tAXQX (1) 1. Sampled only, not 100% tested. tOH Address Transition to Output Transition Min 0000 ns tEHQX (1) tOH Chip Enable High to Output Transition Min 0000 ns tEHQZ (1) tHZ Chip Enable High to Output Hi-Z Max 20 20 25 25 ns tELQV (2) 2. G may be delayed by up to tELQV - tGLQV after the falling edge of E without increasing tELQV tCE Chip Enable Low to Output Valid Max 70 85 90 100 ns tELQX (1) tLZ Chip Enable Low to Output Transition Min 0000 ns tGHQX (1) tOH Output Enable High to Output Transition Min 0000 ns tGHQZ (1) tDF Output Enable High to Output Hi-Z Max 20 20 25 25 ns tGLQV (2) tOE Output Enable Low to Output Valid Max 20203035 ns tGLQX (1) tOLZ Output Enable Low to Output Transition Min 0000 ns DQ0- DQ15 AI04387 VALID A0-A21 E tAXQX tAVAV VALID tAVQV tELQV tELQX tGLQV tGLQX ADDR. VALID CHIP ENABLE OUTPUTS ENABLED DATA VALID STANDBY G tGHQX tGHQZ tEHQX tEHQZ |
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