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Cs si (input), So (output), Cs si (input) so (output) – Rainbow Electronics AT45DB021E User Manual

Page 54

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54

AT45DB021E [PRELIMINARY DATASHEET]

8789B–DFLASH–11/2012

Figure 24-3. Main Memory Page to Buffer Transfer

Data From the selected Flash Page is read into the Buffer

Figure 24-4. Buffer Read

CS

SI (Input)

CMD

PA6-0, X

XXXX XXXX

Starts Reading Page Data into Buffer

Binary Page Size

A17-A8 + 8 Dummy Bits

SO (Output)

X...X, PA9-7

CS

SI (Input)

SO (Output)

n

CMD

X

X...X, BFA8

BFA7-0

X

Address for Binary Page Size

16 Dummy Bits + BFA7-BFA0

n

n + 1

No Dummy Byte (opcode D1h)

1 Dummy Byte (opcode D4h)

Each transition represents eight bits