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AT45DB321C Datasheet(PDF) 26 Page - ATMEL Corporation

Part # AT45DB321C
Description  32-megabit 2.7 volt DataFlash
Download  40 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB321C Datasheet(HTML) 26 Page - ATMEL Corporation

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3387L–DFLASH–6/06
AT45DB321C
14. Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
14.1
Main Memory Page Program through Buffers
14.2
Buffer Write
14.3
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
FLASH MEMORY ARRAY
PAGE (528 BYTES)
BUFFER 2 (528 BYTES)
BUFFER 1 (528 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
r, PA12-6
PA5-0, BFA9-8
BFA7-0
SI
CMD
X
X···X, BFA9-8
BFA7-0
n
n+1
Last Byte
· Completes writing into selected buffer
CS
SI
CMD
PA5-0, XX
X
CS
Starts self-timed erase/program operation
r , PA12-6
Each transition represents
8 bits and 8 clock cycles
n = 1st byte write
n+1 = 2nd byte write


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