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WEDPY256K72V-150BI Datasheet(PDF) 10 Page - White Electronic Designs Corporation |
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WEDPY256K72V-150BI Datasheet(HTML) 10 Page - White Electronic Designs Corporation |
10 / 12 page 10 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs WEDPY256K72V-XBX August 2004 Rev. 7 FIGURE 5 – READ/WRITE TIMING3 NOTES: 1. Q(A4) refers to output from addrss A4. Q(A4 + 1) refers to output from the next internal burst address to following A4. 2. CS2# and CS2 have timing identical to CS1#. On this diagram, when CS1# is LOW, CS2# is LOW and CS2# is HIGH. When CS1# is HIGH, CS2 is HIGH and CS2 is LOW. 3. The data bus (Q) remains in High-Z following a WRITE cycle unless an ADSP#, ADSC#, or ADV# cycle is performed. 4. GW# is HIGH. 5. Back-to back READs may be controlled by either ADSP# or ADSC#. CLK tKC tKH tADSS A1 A2 A3 A4 tADSH tAH tAS tWS tWH tCES tDS tKQLZ tKQ tOEHZ tOELZ tDH (NOTE 1) High-Z High-Z Back-to-Back READs (Note 5) Single WRITE Burst Read Back-to-Back WRITEs A5 A6 Don’t care Undefined tCEH tKL ADSP# ADSC# Address BWE#, BWa#-BWd# (Note 4) CS# (Note 2) ADV# OE# D Q# Q(A1) Q(A2) D(A2) Q(A4+2) Q(A4+3) Q(A4) D(A6) D(A5) Q (A4+1) |
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