Rainbow Electronics AT45DB011D - Manual (Page 39)

39
3639J–DFLASH–11/2012
AT45DB011D
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 PA8-7 PA6-0, BA8 X
CS
n n+1 SO (OUTPUT)
BA7-0
4 Dummy Bytes
X
ADDRESS FOR BINARY PAGE SIZE
A16 A15-A8 A7-A0
Starts reading page data into buffer
SI (INPUT) CMD X···X, PA8-7 PA6-0, X
CS
SO (OUTPUT)
XXXX XXXX
BINARY PAGE SIZE
7 DON’T CARE BITS + A16-A8 + 8 DON'T CARE BITS