AT45DB081B-CNU SL383 Atmel, AT45DB081B-CNU SL383 Datasheet - Page 16
AT45DB081B-CNU SL383
Manufacturer Part Number
AT45DB081B-CNU SL383
Description
Manufacturer
Atmel
Datasheet
1.AT45DB081B-CNU_SL383.pdf
(33 pages)
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Write
Operations
Main Memory Page Program through Buffers
Buffer Write
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
16
Each transition represents
8 bits and 8 clock cycles
CS
SI
AT45DB081B
CS
SI
PAGE PROGRAM
PAGE (256 BYTES)
BUFFER 1 (256 BYTES)
BUFFER 1 TO
CMD
BUFFER 1
The following block diagram and waveforms illustrate the various write sequences available.
WRITE
CMD
CS
SI
r r r , PA11-7
X
PA6-0, BFA8
CMD
X···X, BFA8
FLASH MEMORY ARRAY
PAGE PROGRAM
THROUGH BUFFER 1
I/O INTERFACE
r r r , PA11-7
THROUGH BUFFER 2
BFA7-0
BFA7-0
PAGE PROGRAM
SI
Starts self-timed erase/program operation
PA6-0, X
n
n
n+1
BUFFER 2 (256 BYTES)
· Completes writing into selected buffer
X
n+1
· Completes writing into selected buffer
· Starts self-timed erase/program operation
BUFFER 2 TO
PAGE PROGRAM
BUFFER 2
WRITE
Last Byte
Last Byte
n = 1st byte read
n+1 = 2nd byte read
2225J–DFLSH–2/08
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