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IS61LV632A Datasheet(PDF) 4 Page - Integrated Silicon Solution, Inc |
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IS61LV632A Datasheet(HTML) 4 Page - Integrated Silicon Solution, Inc |
4 / 16 page ![]() IS61LV632A ISSI® 4 Integrated Silicon Solution, Inc. — 1-800-379-4774 Rev. A 04/17/01 TRUTH TABLE ADDRESS OPERATION USED CE1 CE2 CE3 ADSP ADSC ADV WRITE OE DQ Deselected, Power-down None H X X X L X X X High-Z Deselected, Power-down None L L X L XXXX High-Z Deselected, Power-down None L X H L XXXX High-Z Deselected, Power-down None L L X H L X X X High-Z Deselected, Power-down None L X H H L X X X High-Z Read Cycle, Begin Burst External L H L L X X X L Q Read Cycle, Begin Burst External L H L L X X X H High-Z Write Cycle, Begin Burst External L H L H L X L X D Read Cycle, Begin Burst External L H L H L X H L Q Read Cycle, Begin Burst External L H L H L X H H High-Z Read Cycle, Continue Burst Next X X X H H L H L Q Read Cycle, Continue Burst Next X X X H H L H H High-Z Read Cycle, Continue Burst Next H X X X H L H L Q Read Cycle, Continue Burst Next H X X X H L H H High-Z Write Cycle, Continue Burst Next X X X H H L L X D Write Cycle, Continue Burst Next H X X X H L L X D Read Cycle, Suspend Burst Current X X X HHHH L Q Read Cycle, Suspend Burst Current X X X HHHHH High-Z Read Cycle, Suspend Burst Current H X X X H H H L Q Read Cycle, Suspend Burst Current H X X X HHHH High-Z Write Cycle, Suspend Burst Current X X X H H H L X D Write Cycle, Suspend Burst Current H X X X H H L X D Notes: 1. All inputs except OE must meet setup and hold times for the Low-to-High transition of clock (CLK). 2. Wait states are inserted by suspending burst. 3. X means don't care. WRITE=L means any one or more byte write enable signals (BW1-BW4) and BWE are LOW or GW is LOW. WRITE=H means all byte write enable signals are HIGH. 4. For a Write operation following a Read operation, OE must be HIGH before the input data required setup time and held HIGH throughout the input data hold time. 5. ADSP LOW always initiates an internal READ at the Low-to-High edge of clock. A WRITE is performed by setting one or more byte write enable signals and BWE LOW or GW LOW for the subsequent L-H edge of clock. PARTIAL TRUTH TABLE FUNCTION GW BWE BW1 BW2 BW3 BW4 READ H H X X X X READ H X H H H H WRITE Byte 1 H L L H H H WRITE All Bytes X LLLL L WRITE All Bytes L XXXX X |
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