Rainbow Electronics AT45DB011D - Manual (Page 38)

38
3639J–DFLASH–11/2012
AT45DB011D
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)
I/O INTERFACE
SI
BUFFER TO
MAIN MEMORY
PAGE PROGRAM
BUFFER
WRITE
BUFFER (256-/264-BYTES)
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 PA8-7 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
A16-A8 + 8 DON'T CARE BITS