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AT45DB011B
Read
The following block diagram and waveforms illustrate the various read sequences available.
Operations
FLASH MEMORY ARRAY
PAGE (264 BYTES)
MAIN MEMORY
PAGE TO
BUFFER
Main Memory Page Read
CS
BUFFER (264 BYTES)
BUFFER
READ
I/O INTERFACE
SO
MAIN MEMORY
PAGE READ
SI
CMD
r ···r , PA8-7
PA6-0, BA8
BA7-0
X
X
X
X
SO
Main Memory Page to Buffer Transfer (Data from Flash Page Read into Buffer)
Starts reading page data into buffer
CS
n
n+1
SI
CMD
r ···r , PA8-7
PA6-0, X
X
SO
Buffer Read
CS
SI
CMD
X
X···X, BFA8
BFA7-0
X
SO
Each transition represents
8 bits and 8 clock cycles
n
n+1
n = 1st byte read
n+1 = 2nd byte read
17
1984J–DFLASH–06/06
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相关代理商/技术参数
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