AT45DB161D-MU-SL954 ATMEL [ATMEL Corporation], AT45DB161D-MU-SL954 Datasheet - Page 40

• Manufacturer Part Number: AT45DB161D-MU-SL954
• 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
40
SO (OUTPUT)
Main Memory Page Read
Main Memory Page to Buffer Transfer (Data from Flash Page Read into Buffer)
SI (INPUT)
AT45DB161D
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
3500J–DFLASH–4/08