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AT45DB081A Datasheet(PDF) 14 Page - ATMEL Corporation

Part # AT45DB081A
Description  8-megabit 2.7-volt Only Serial DataFlash
Download  28 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB081A Datasheet(HTML) 14 Page - ATMEL Corporation

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AT45DB081A
14
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 (264 BYTES)
BUFFER 2 (264 BYTES)
BUFFER 1 (264 BYTES)
I/O INTERFACE
SI
BUFFER 1 TO
MAIN MEMORY
PAGE PROGRAM
MAIN MEMORY
PAGE PROGRAM
THROUGH BUFFER 2
BUFFER 2 TO
MAIN MEMORY
PAGE PROGRAM
MAIN MEMORY 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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