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AT45DB081B-CC-2.5 Datasheet(PDF) 17 Page - ATMEL Corporation |
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AT45DB081B-CC-2.5 Datasheet(HTML) 17 Page - ATMEL Corporation |
17 / 32 page 17 AT45DB081B 2225C–12/01 Read Operations The following block diagram and waveforms illustrate the various read sequences available. Main Memory Page Read Main Memory Page to Buffer Transfer (Data from Flash Page Read into Buffer) Buffer Read FLASH MEMORY ARRAY PAGE (264 BYTES) BUFFER 2 (264 BYTES) BUFFER 1 (264 BYTES) I/O INTERFACE MAIN MEMORY PAGE TO BUFFER 1 MAIN MEMORY PAGE TO BUFFER 2 MAIN MEMORY PAGE READ BUFFER 1 READ BUFFER 2 READ SO SI CMD rrr, PA11-7 PA6-0, BA8 BA7-0 X XXX CS n n+1 SO SI CMD rrr, PA11-7 PA6-0, X X Starts reading page data into buffer CS SO SI CMD X X···X, BFA8 BFA7-0 CS n n+1 SO X Each transition represents 8 bits and 8 clock cycles n = 1st byte read n+1 = 2nd byte read |
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