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AT45DB021D-MU Datasheet(PDF) 40 Page - ATMEL Corporation

Part # AT45DB021D-MU
Description  2-megabit 2.7-volt DataFlash
PDF  52 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB021D-MU Datasheet(HTML) 40 Page - ATMEL Corporation

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3638B–DFLASH–02/07
AT45DB021D [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 (256/264 BYTES)
BUFFER (256/264 BYTES)
I/O INTERFACE
MAIN MEMORY
PAGE TO
BUFFER
MAIN MEMORY
PAGE READ
BUFFER
READ
SO
SI (INPUT)
CMD
PA9-7
PA6-0, BA8
X
CS
n
n+1
SO (OUTPUT)
BA7-0
4 Dummy Bytes
X
ADDRESS FOR BINARY PAGE SIZE
A17-A16
A15-A8
A7-A0
Starts reading page data into buffer
SI (INPUT)
CMD
X···X, PA9-7
PA6-0, X
CS
SO (OUTPUT)
XXXX XXXX
BINARY PAGE SIZE
6 DON’T CARE BITS + A17-A8 + 8 DON'T CARE BITS



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