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AT45DB321D Datasheet(PDF) 41 Page - ATMEL Corporation

Part # AT45DB321D
Description  32-megabit 2.7-volt DataFlash
PDF  57 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB321D Datasheet(HTML) 41 Page - ATMEL Corporation

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3597N–DFLASH–04/09
AT45DB321D
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 (512/528 BYTES)
BUFFER 2 (512/528 BYTES)
BUFFER 1 (512/528 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
PA12-6
PA5-0, BA9-8
X
CS
n
n+1
SO (OUTPUT)
BA7-0
4 Dummy Bytes
X
ADDRESS FOR BINARY PAGE SIZE
A21-A16
A15-A8
A7-A0
Starts reading page data into buffer
SI (INPUT)
CMD
PA12-6
PA5-0, XX
CS
SO (OUTPUT)
XXXX XXXX
BINARY PAGE SIZE
A21-A9 + 9 DON'T CARE BITS



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