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UPD44165182F5-E75-EQ1 Datasheet(PDF) 10 Page - NEC |
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UPD44165182F5-E75-EQ1 Datasheet(HTML) 10 Page - NEC |
10 / 32 page 10 Data Sheet M15824EJ7V 1DS µµµµPD44165082, 44165182, 44165362 Bus Cycle State Diagram READ DOUBLE WRITE DOUBLE AT /K Power UP Always Supply voltage provided LOAD NEW READ ADDRESS READ PORT NOP R_Init = 0 WRITE PORT NOP LOAD NEW WRITE ADDRESS AT /K Always /W = L Supply voltage provided /W = L /W = H /W = H /R = L /R = L /R = H /R = H Remarks 1. The address is concatenated with 1 additional internal LSB to facilitate burst operation. The address order is always fixed as: xxx...xxx+0, xxx...xxx+1. Bus cycle is terminated at the end of this sequence (burst count = 2). 2. Read and write state machines can be active simultaneously. 3. State machine control timing sequence is controlled by K. |
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