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IC41LV16257S-35TI Datasheet(PDF) 4 Page - Integrated Circuit Solution Inc |
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IC41LV16257S-35TI Datasheet(HTML) 4 Page - Integrated Circuit Solution Inc |
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4 / 20 page  IC41C16257/IC41C16257S IC41LV16257/IC41LV16257S 4 Integrated Circuit Solution Inc. DR021-0A 08/11/2001 TRUTH TABLE Function RAS RAS RAS RAS RAS LCAS LCAS LCAS LCAS LCAS UCAS UCAS UCAS UCAS UCAS WE WE WE WE WE OE OE OE OE OE Address tR/tC I/O Standby H H H X X X High-Z Read: Word L L L H L ROW/COL DOUT Read: Lower Byte L L H H L ROW/COL Lower Byte, DOUT Upper Byte, High-Z Read: Upper Byte L H L H L ROW/COL Lower Byte, High-Z Upper Byte, DOUT Write: Word (Early Write) L L L L X ROW/COL DIN Write: Lower Byte (Early Write) L L H L X ROW/COL Lower Byte, DIN Upper Byte, High-Z Write: Upper Byte (Early Write) L H L L X ROW/COL Lower Byte, High-Z Upper Byte, DIN Read-Write(1,2) LL L H →LL→H ROW/COL DOUT, DIN Hidden Refresh2) Read L →H→L L L H L ROW/COL DOUT Write L →H→L L L L X ROW/COL DOUT RAS-Only Refresh L H H X X ROW/NA High-Z CBR Refresh(3) H →L L L X X X High-Z Notes: 1. These WRITE cycles may also be BYTE WRITE cycles (either LCAS or UCAS active). 2. These READ cycles may also be BYTE READ cycles (either LCAS or UCAS active). 3. At least one of the two CAS signals must be active ( LCAS or UCAS). |
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