AT45DB081D-MU-SL954 ATMEL [ATMEL Corporation], AT45DB081D-MU-SL954 Datasheet - Page 40

• Manufacturer Part Number: AT45DB081D-MU-SL954
• Description: 8-megabit 2.5-volt or 2.7-volt DataFlash
• Manufacturer: ATMEL [ATMEL Corporation]

22. Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
22.1
22.2
40
SI (INPUT)
Buffer Write
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
CS
AT45DB081D
SI (INPUT)
CS
represents 8 bits
PAGE (256/264 BYTES)
Each transition
CMD
X
16 DON'T CARE + BFA7-BFA0
CMD
BINARY PAGE SIZE
X···X, BFA8
PAGE PROGRAM
BUFFER (256/264 BYTES)
MAIN MEMORY
FLASH MEMORY ARRAY
BUFFER TO
BUFFER
I/O INTERFACE
WRITE
PA10-7
Starts self-timed erase/program operation
BFA7-0
SI
A19-A8 + 8 DON'T CARE BITS
BINARY PAGE SIZE
n
PA6, X
Completes writing into selected buffer
n+1
XXXX XX
n = 1st byte read
n+1 = 2nd byte read
Last Byte
3596L–DFLASH–04/09