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AT45DB021D 数据表(PDF) 39 Page - ATMEL Corporation

部件名 AT45DB021D
功能描述  2-megabit 2.7-volt Minimum DataFlash
PDF  52 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

AT45DB021D 数据表(HTML) 39 Page - ATMEL Corporation

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39
3638F–DFLASH–4/08
AT45DB021D
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 (256/264 BYTES)
BUFFER (256/264 BYTES)
I/O INTERFACE
SI
BUFFER TO
MAIN MEMORY
PAGE PROGRAM
BUFFER
WRITE
SI (INPUT)
CMD
Completes writing into the buffer
CS
X
X···X, BFA8
BFA7-0
n
n+1
Last Byte
BINARY PAGE SIZE
16 DON'T CARE + BFA7-BFA0
SI (INPUT)
CMD
PA9-7
PA6-0, X
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
A17-A8 + 8 DON'T CARE BITS



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