Rainbow Electronics AT45DB161D - Manual (Page 36)

36
3500O–DFLASH–11/2012
AT45DB161D
22.1 Buffer Write
22.2 Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
23. Read Operations
The following block diagram and waveforms illustrate the various read sequences available.
SI (INPUT)
CMD
Completes writing into selected buffer
CS
X X···X, BFA9-8 BFA7-0 n n+1 Last Byte
BINARY PAGE SIZE
15 DON'T CARE + BFA8-BFA0
SI (INPUT) CMD PA11-6 PA5-0, XX
CS
Starts self-timed erase/program operation
XXXX XX
Each transition
represents eight bits
n = 1st byte read
n+1 = 2nd byte read
BINARY PAGE SIZE
A20-A9 + 9 DON'T CARE BITS
FLASH MEMORY ARRAY
PAGE (512-/528-BYTES)
BUFFER 2 (512-/528-BYTES) BUFFER 1 (512-/528-BYTES)
I/O INTERFACE
MAIN MEMORY
PAGE TO
BUFFER 1
MAIN MEMORY
PAGE TO
BUFFER 2
MAIN MEMORY
PAGE READ BUFFER 1
READ
BUFFER 2
READ
SO