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GS82582D36E-375 датащи(PDF) 5 Page - GSI Technology |
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GS82582D36E-375 датащи(HTML) 5 Page - GSI Technology |
5 / 30 page GS82582D18/36GE-400/375/333/300/250 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. Rev: 1.04 4/2016 5/30 © 2012, GSI Technology Background Separate I/O SRAMs, from a system architecture point of view, are attractive in applications where alternating reads and writes are needed. Therefore, the SigmaQuad-II SRAM interface and truth table are optimized for alternating reads and writes. Separate I/O SRAMs are unpopular in applications where multiple reads or multiple writes are needed because burst read or write transfers from Separate I/O SRAMs can cut the RAM’s bandwidth in half. SigmaQuad-II B4 SRAM DDR Read The status of the Address Input, W, and R pins are sampled by the rising edges of K. W and R high causes chip disable. A low on the Read Enable-bar pin, R, begins a read cycle. R is always ignored if the previous command loaded was a read command. Data can be clocked out after the next rising edge of K with a rising edge of C (or by K if C and C are tied high), after the following rising edge of K with a rising edge of C (or by K if C and C are tied high), after the next rising edge of K with a rising edge of C, and after the following rising edge of K with a rising edge of C. Clocking in a high on the Read Enable-bar pin, R, begins a read port deselect cycle. Read A NOP Read B Write C Read D Write E NOP A B C D E C C+1 C+2 C+3 E E+1 C C+1 C+2 C+3 E E+1 A A+1 A+2 A+3 B B+1 B+2 B+3 D D+1 D+2 K K Address R W BWx D C C Q CQ CQ |
Аналогичный номер детали - GS82582D36E-375 |
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Аналогичное описание - GS82582D36E-375 |
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