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