AT45DB081D-MU-SL954 ATMEL [ATMEL Corporation], AT45DB081D-MU-SL954 Datasheet - Page 41

• Manufacturer Part Number: AT45DB081D-MU-SL954
• Description: 8-megabit 2.5-volt or 2.7-volt DataFlash
• Manufacturer: ATMEL [ATMEL Corporation]

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