AT45DB011

11

Each transition represents

8 bits and 8 clock cycles

Write Operations

The following block diagram and waveforms illustrate the various write sequences available.

Main Memory Page Program through Buffer

Buffer Write

Buffer to Main Memory Page Program

(Data from Buffer Programmed into Flash Page)

FLASH MEMORY ARRAY

PAGE (264 BYTES)

BUFFER (264 BYTES)

I/O INTERFACE

SI

BUFFER TO

MAIN MEMORY

PAGE PROGRAM

MAIN MEMORY PAGE

PROGRAM THROUGH

BUFFER

BUFFER

WRITE

SI

CMD

n

n+1

Last Byte

· Completes writing into buffer

· Starts self-timed erase/program operation

CS

r ···r , PA8-7

PA6-0, BFA8

BFA7-0

SI

CMD

X

X···X, BFA8

BFA7-0

n

n+1

Last Byte

· Completes writing into buffer

CS

SI

CMD

PA6-0, X

X

CS

Starts self-timed erase/program operation

r ···r , PA8-7

n = 1st byte written

n+1 = 2nd byte written