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GS82582Q36GE-333 数据表(PDF) 7 Page - GSI Technology |
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GS82582Q36GE-333 数据表(HTML) 7 Page - GSI Technology |
7 / 32 page GS82582Q18/36GE-357/333/300/250 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. Rev: 1.04 4/2016 7/31 © 2012, GSI Technology Special Functions Byte Write Control Byte Write Enable pins are sampled at the same time that Data In is sampled. A high on the Byte Write Enable pin associated with a particular byte (e.g., BW0 controls D0–D8 inputs) will inhibit the storage of that particular byte, leaving whatever data may be stored at the current address at that byte location undisturbed. Any or all of the Byte Write Enable pins may be driven high or low during the data in sample times in a write sequence. Each write enable command and write address loaded into the RAM provides the base address for a 2 beat data transfer. The x18 version of the RAM, for example, may write 36 bits in association with each address loaded. Any 9-bit byte may be masked in any write sequence. Example x18 RAM Write Sequence using Byte Write Enables Data In Sample Time BW0 BW1 D0–D8 D9–D17 Beat 1 0 1 Data In Don’t Care Beat 2 1 0 Don’t Care Data In Resulting Write Operation Byte 1 D0–D8 Byte 2 D9–D17 Byte 3 D0–D8 Byte 4 D9–D17 Written Unchanged Unchanged Written Beat 1 Beat 2 Output Register Control SigmaQuad-II SRAMs offer two mechanisms for controlling the output data registers. Typically, control is handled by the Output Register Clock inputs, C and C. The Output Register Clock inputs can be used to make small phase adjustments in the firing of the output registers by allowing the user to delay driving data out as much as a few nanoseconds beyond the next rising edges of the K and K clocks. If the C and C clock inputs are tied high, the RAM reverts to K and K control of the outputs, allowing the RAM to function as a conventional pipelined read SRAM. |
类似零件编号 - GS82582Q36GE-333 |
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类似说明 - GS82582Q36GE-333 |
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