AT45DB161D-SU-SL955 ATMEL [ATMEL Corporation], AT45DB161D-SU-SL955 Datasheet - Page 41

• Manufacturer Part Number: AT45DB161D-SU-SL955
• Description: 16-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
3500M–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 (512/528 BYTES)
BUFFER 1 (512/528 BYTES)
BUFFER 1
BUFFER 1
PAGE TO
CMD
READ
ADDRESS FOR BINARY PAGE SIZE
CMD
A20-A16
PA11-6
, PA5-0, BA9-8
FLASH MEMORY ARRAY
A15-A8
I/O INTERFACE
PA11-6
SO
A7-A0
BA7-0
MAIN MEMORY
PAGE READ
A20-A9 + 9 DON'T CARE BITS
BINARY PAGE SIZE
BUFFER 2 (512/528 BYTES)
X
4 Dummy Bytes
PA5-0, XX
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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