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XC2S300E-6PQ208C

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File Size : 116 KB Manufacturer:XILINX Description:BUS OPERATIONS There are five standard bus operations that control the device. These are Bus Read, Bus Write, Out- put Disable, Standby and Automatic Standby. See Table 5, Bus Operations, for a summary. Typically glitches of less than 5ns on Chip Enable or Write Enable are ignored by the memory and do not af- fect bus operations. Bus Read. Bus Read operations read from the memory cells, or specific registers in the Com- mand Interface. A valid Bus Read operation in- volves setting the desired address on the Address Inputs, applying a Low signal, V IL, to Chip Enable and Output Enable and keeping Write Enable High, VIH. The Data Inputs/Outputs will output the value, see Figure 9, Read Mode AC Waveforms, and Table 12, Read AC Characteristics, for details of when the output becomes valid. Bus Write. Bus Write operations write to the Command Interface. A valid Bus Write operation begins by setting the desired address on the Ad- dress Inputs. The Address Inputs are latched by the Command Interface on the falling edge of Chip Enable or Write Enable, whichever occurs last. The Data Inputs/Outputs are latched by the Com- mand Interface on the rising edge of Chip Enable or Write Enable, whichever occurs first. Output En- able must remain High, VIH, during the whole Bus Write operation. See Figures 10 and 11, Write AC Waveforms, and Tables 13 and 14, Write AC Characteristics, for details of the timing require- ments. Output Disable. The Data Inputs/Outputs are in the high impedance state when Output Enable is High, V IH. Standby. When Chip Enable is High, VIH, the Data Inputs/Outputs pins are placed in the high- impedance state and the Supply Current is re- duced to the Standby level.


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	1PCS	100PCS	1K	10K
价格


型号：XC2S300E-6PQ208C 厂家：XILINX 封装：140 批号：03+ 数量：QFP208 说明：


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