AT45DB321E-SUF-T View Datasheet(PDF) - Unspecified

Part Name

Description

MFG CO.

AT45DB321E-SUF-T

32-Mbit DataFlash (with Extra 1-Mbits), 2.3V Minimum SPI Serial Flash Memory

Unspecified 

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Figure 25-4. Main Memory Page Read (Opcode D2h)

CS

SCK

SI

SO

0 1 2 3 4 5 6 7 8 9 10 11 12

29 30 31 32 33 34

62 63 64 65 66 67 68 69 70 71 72

Opcode

Address Bits

32 Dummy Bits

1 1 0 1 0 0 1 0AAAAAA

MSB

MSB

High-impedance

AAAXXXX

MSB

XX

Data Byte 1

DDDDDDDDDD

MSB

MSB

Figure 25-5. Buffer Read (Opcode D4h or D6h)

CS

SCK

SI

SO

0 1 2 3 4 5 6 7 8 9 10 11 12

29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Opcode

Address Bits

Binary Page Size = 15 Dummy Bits + BFA8-BFA0

Standard DataFlash Page Size =

14 Dummy Bits + BFA9-BFA0

Dummy Bits

1 1 0 1 0 1 0 0XXXXXX

MSB

MSB

High-impedance

AAAXXXXXXXX

MSB

Data Byte 1

DDDDDDDDDD

MSB

MSB

Figure 25-6. Buffer Read – Low Frequency (Opcode D1h or D3h)

CS

SCK

SI

SO

0 1 2 3 4 5 6 7 8 9 10 11 12

29 30 31 32 33 34 35 36 37 38 39 40

Opcode

Address Bits

Binary Page Size = 15 Dummy Bits + BFA8-BFA0

Standard DataFlash Page Size =

14 Dummy Bits + BA9-BFA0

1 1 0 1 0 0 0 1XXXXXX

MSB

MSB

High-impedance

AAA

Data Byte 1

DDDDDDDDDD

MSB

MSB

AT45DB321E 58

8784E–DFLASH–10/2013

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