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AT45DB321D データシート(PDF) 39 Page - ATMEL Corporation

部品番号 AT45DB321D
部品情報  32-megabit 2.7-volt DataFlash
PDF  54 Pages
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メーカー  ATMEL [ATMEL Corporation]
ホームページ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT45DB321D データシート(HTML) 39 Page - ATMEL Corporation

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3597J–DFLASH–4/08
AT45DB321D
22. Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
22.1
Buffer Write
22.2
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
FLASH MEMORY ARRAY
PAGE (512/528 BYTES)
BUFFER 2 (512/528 BYTES)
BUFFER 1 (512/528 BYTES)
I/O INTERFACE
SI
BUFFER 1 TO
MAIN MEMORY
PAGE PROGRAM
BUFFER 2 TO
MAIN MEMORY
PAGE PROGRAM
BUFFER 1
WRITE
BUFFER 2
WRITE
SI (INPUT)
CMD
Completes writing into selected buffer
CS
X
X···X, BFA9-8
BFA7-0
n
n+1
Last Byte
BINARY PAGE SIZE
15 DON'T CARE + BFA8-BFA0
SI (INPUT)
CMD
PA12-6
PA5-0, XX
CS
Starts self-timed erase/program operation
XXXX XX
Each transition
represents 8 bits
n = 1st byte read
n+1 = 2nd byte read
BINARY PAGE SIZE
A21-A9 + 9 DON'T CARE BITS



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