AT45DB041D datasheet(39/53 Pages) ATMEL

Part #	AT45DB041D

Description	4-megabit 2.5-volt or 2.7-volt DataFlash

PDF	53 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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39 / 53 page

3595H–DFLASH–03/07

AT45DB041D

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)

BUFFER 2 (256/264 BYTES)

BUFFER 1 (256/264 BYTES)

I/O INTERFACE

BUFFER 1 TO

MAIN MEMORY

PAGE PROGRAM

BUFFER 2 TO

MAIN MEMORY

PAGE PROGRAM

BUFFER 1

WRITE

BUFFER 2

WRITE

SI (INPUT)

CMD

Completes writing into selected buffer

X···X, BFA8

BFA7-0

n+1

Last Byte

BINARY PAGE SIZE

16 DON'T CARE + BFA7-BFA0

SI (INPUT)

CMD

PA10-7

PA6-0, X

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

A18-A8 + 8 DON'T CARE BITS

AT45DB041D Datasheet(PDF) 39 Page - ATMEL Corporation

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