1 buffer write, Read operations – Rainbow Electronics AT45DB161D User Manual

Page 36

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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

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