AT45DB011 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT45DB011

1-megabit 2.7-volt Only Serial DataFlash®

Atmel Corporation 

AT45DB011

Read Operations

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

FLASH MEMORY ARRAY

PAGE (264 BYTES)

MAIN MEMORY

PAGE TO

BUFFER

BUFFER (264 BYTES)

BUFFER

READ

I/O INTERFACE

MAIN MEMORY

PAGE READ

SO

Main Memory Page Read

CS

SI

CMD

r ···r , PA8-7 PA6-0, BA8

BA7-0

X

X

X

X

SO

n

n+1

Main Memory Page to Buffer Transfer (Data from Flash Page Read into Buffer)

Starts reading page data into buffer

CS

SI

CMD

r ···r , PA8-7

PA6-0, X

X

SO

Buffer Read

CS

SI

SO

CMD

X

X···X, BFA8

BFA7-0

X

Each transition represents

8 bits and 8 clock cycles

n

n+1

n = 1st byte read

n+1 = 2nd byte read

11

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