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EPF10K10 数据表(PDF) 11 Page - Altera Corporation |
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EPF10K10 数据表(HTML) 11 Page - Altera Corporation |
11 / 128 page Altera Corporation 11 FLEX 10K Embedded Programmable Logic Device Family Data Sheet Larger blocks of RAM are created by combining multiple EABs. For example, two 256 × 8 RAM blocks can be combined to form a 256 × 16 RAM block; two 512 × 4 blocks of RAM can be combined to form a 512 × 8RAM block. See Figure 3. Figure 3. Examples of Combining EABs If necessary, all EABs in a device can be cascaded to form a single RAM block. EABs can be cascaded to form RAM blocks of up to 2,048 words without impacting timing. Altera’s software automatically combines EABs to meet a designer’s RAM specifications. EABs provide flexible options for driving and controlling clock signals. Different clocks can be used for the EAB inputs and outputs. Registers can be independently inserted on the data input, EAB output, or the address and WE inputs. The global signals and the EAB local interconnect can drive the WE signal. The global signals, dedicated clock pins, and EAB local interconnect can drive the EAB clock signals. Because the LEs drive the EAB local interconnect, the LEs can control the WE signal or the EAB clock signals. Each EAB is fed by a row interconnect and can drive out to row and column interconnects. Each EAB output can drive up to two row channels and up to two column channels; the unused row channel can be driven by other LEs. This feature increases the routing resources available for EAB outputs. See Figure 4. 512 × 4 512 × 4 256 × 8 256 × 8 256 × 16 512 × 8 |
类似零件编号 - EPF10K10 |
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类似说明 - EPF10K10 |
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