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AT45DB081B-CC-2.5 Datasheet(PDF) 16 Page - ATMEL Corporation

Part # AT45DB081B-CC-2.5
Description  8-megabit 2.5-volt Only or 2.7-volt Only DataFlash
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB081B-CC-2.5 Datasheet(HTML) 16 Page - ATMEL Corporation

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AT45DB081B
2225I–DFLSH–9/05
Write Operations
The following block diagram and waveforms illustrate the various write sequences
available.
Main Memory Page Program through Buffers
Buffer Write
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
FLASH MEMORY ARRAY
PAGE (256 BYTES)
BUFFER 2 (256 BYTES)
BUFFER 1 (256 BYTES)
I/O INTERFACE
SI
BUFFER 1 TO
PAGE PROGRAM
PAGE PROGRAM
THROUGH BUFFER 2
BUFFER 2 TO
PAGE PROGRAM
PAGE PROGRAM
THROUGH BUFFER 1
BUFFER 1
WRITE
BUFFER 2
WRITE
SI
CMD
n
n+1
Last Byte
· Completes writing into selected buffer
· Starts self-timed erase/program operation
CS
rrr, PA11-7
PA6-0, BFA8
BFA7-0
SI
CMD
X
X···X, BFA8
BFA7-0
n
n+1
Last Byte
· Completes writing into selected buffer
CS
SI
CMD
rrr, PA11-7
PA6-0, X
CS
Starts self-timed erase/program operation
X
Each transition represents
8 bits and 8 clock cycles
n = 1st byte read
n+1 = 2nd byte read


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