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AT45DB081D Datasheet(PDF) 41 Page - ATMEL Corporation

Part # AT45DB081D
Description  8-megabit 2.5-volt or 2.7-volt DataFlash
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB081D Datasheet(HTML) 41 Page - ATMEL Corporation

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41
3596L–DFLASH–04/09
AT45DB081D
23. Read Operations
The following block diagram and waveforms illustrate the various read sequences available.
23.1 Main Memory Page Read
23.2 Main Memory Page to Buffer Transfer (Data from Flash Page Read into Buffer)
FLASH MEMORY ARRAY
PAGE (256/264 BYTES)
BUFFER 2 (256/264 BYTES)
BUFFER 1 (256/264 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 (INPUT)
CMD
PA11-7
PA6-0, BA8
X
CS
n
n+1
SO (OUTPUT)
BA7-0
4 Dummy Bytes for Serial
X
ADDRESS FOR BINARY PAGE SIZE
A19-A16
A15-A8
A7-A0
Starts reading page data into buffer
SI (INPUT)
CMD
PA11-7
PA6-0, X
CS
SO (OUTPUT)
XXXX XXXX
BINARY PAGE SIZE
A19-A8 + 8 DON'T CARE BITS


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