Rainbow-electronics AT45DB642 Manual do Utilizador descarregar pdf (Página 56)

AT45DB321E [PRELIMINARY DATASHEET]

8784B–DFLASH–11/2012

Figure 24-3. Main Memory Page to Buffer Transfer

Data From the selected Flash Page is read into either SRAM Buffer

Figure 24-4. Buffer Read

SI (Input)

CMD XX, PA12-6 PA5-0, XX XXXX XXXX

Starts Reading Page Data into Buffer

Binary Page Size

A21-A9 + 9 Dummy Bits

SO (Output)

SI (Input)

SO (Output)

CMD X X...X, BFA9-8 BFA7-0 X

Address for Binary Page Size

A21-A16 A15-A8 A7-A0

n n + 1

No Dummy Byte (opcodes D1H and D3H)

1 Dummy Byte (opcodes D4H and D6H)

Each transition represents eight bits

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 70 71

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Rainbow-electronics AT45DB642 Manual do Utilizador Página 56