AT45DB081B-RU datasheet(16/33 Pages) ATMEL

Nome de Peças	AT45DB081B-RU

Descrição Electrónicos	8-megabit 2.5-volt Only or 2.7-volt Only DataFlash

PDF	33 Pages

Scroll/Zoom	100%

Fabricante Electrônico	ATMEL [ATMEL Corporation]

Página de início	http://www.atmel.com

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AT45DB081B

2225I–DFLSH–9/05

Write Operations

The following block diagram and waveforms illustrate the various write sequences

available.

Main Memory Page Program through Buffers

Buffer Write

Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)

FLASH MEMORY ARRAY

PAGE (256 BYTES)

BUFFER 2 (256 BYTES)

BUFFER 1 (256 BYTES)

I/O INTERFACE

BUFFER 1 TO

PAGE PROGRAM

THROUGH BUFFER 2

BUFFER 2 TO

PAGE PROGRAM

THROUGH BUFFER 1

BUFFER 1

WRITE

BUFFER 2

WRITE

CMD

n+1

Last Byte

· Completes writing into selected buffer

· Starts self-timed erase/program operation

rrr, PA11-7

PA6-0, BFA8

BFA7-0

CMD

X···X, BFA8

BFA7-0

n+1

Last Byte

· Completes writing into selected buffer

CMD

rrr, PA11-7

PA6-0, X

Starts self-timed erase/program operation

Each transition represents

8 bits and 8 clock cycles

n = 1st byte read

n+1 = 2nd byte read

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