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AT45DB321D データシート(PDF) 40 Page - ATMEL Corporation

部品番号 AT45DB321D
部品情報  32-megabit 2.7-volt DataFlash
PDF  55 Pages
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メーカー  ATMEL [ATMEL Corporation]
ホームページ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB321D データシート(HTML) 40 Page - ATMEL Corporation

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3597H–DFLASH–02/07
AT45DB321D [Preliminary]
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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