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GS81302Q36GE-300I 数据表(PDF) 7 Page - GSI Technology |
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GS81302Q36GE-300I 数据表(HTML) 7 Page - GSI Technology |
7 / 34 page GS81302Q08/09/18/36E-300/250 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. Rev: 1.04c 1/2012 7/33 © 2011, 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 B2 SRAM DDR Read The read port samples the status of the Address Input and R pins at each rising edge of K. A low on the Read Enable-bar pin, R, begins a read cycle. 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), and after the following rising edge of K with a rising edge of C (or by K if C and C are tied high). Clocking in a high on the Read Enable-bar pin, R, begins a read port deselect cycle. SigmaQuad-II B2 Double Data Rate SRAM Read First Read A NOP Write B Read C Write D Read E Write F Read G Write H A B C D E F G H B B+1 D D+1 F F+1 H H+1 B B+1 D D+1 F F+1 H H+1 A A+1 C C+1 E K K Address R W BWx D C C Q CQ CQ |
类似零件编号 - GS81302Q36GE-300I |
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类似说明 - GS81302Q36GE-300I |
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