AT45DB321D-CCU Adesto Technologies, AT45DB321D-CCU Datasheet - Page 34

• Manufacturer Part Number: AT45DB321D-CCU
• Description: Flash 32M 2.7-3.6V, 66Mhz Serial Flash
• Manufacturer: Adesto Technologies

Specifications of AT45DB321D-CCU

• Rohs: yes
• Data Bus Width: 8 bit
• Memory Type: Data Flash
• Memory Size: 32 Mbit
• Architecture: Flexible, Uniform Erase
• Timing Type: Synchronous
• Interface Type: SPI
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V
• Maximum Operating Current: 15 mA
• Operating Temperature: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: BGA-24
• Factory Pack Quantity: 378

20.
Figure 19-3. Command Sequence for Read/Write Operations for a 512-Byte Page Size
Figure 19-4. Command Sequence for Read/Write Operations for a 528-Byte Page Size
Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
Figure 20-1. Block Diagram
SI (INPUT)
SI (INPUT)
MSB
MSB
Page (512-/528-bytes)
Buffer 1 (512-/528-bytes)
Page Program
Main Memory
Buffer 1 to
Buffer 1
(Except Status Register Read, Manufacturer, and Device ID Read)
(Except Status Register Read, Manufacturer, and Device ID Read)
WRITE
Don’t care
bits
X X
1 Don’t care
X X X X X X X X X X X X X X
CMD
CMD
bit
X X X XX X X X
Page address
8-bits
8-bits
(A21 - A9)
Page address
(PA12 - PA0)
Flash Memory Array
I/O Interface
8-bits
8-bits
X X X X
SI
(A8 - A0/BFA8 - BFA0)
8-bits
8-bits
Byte/Buffer address
X X X X
X X X X X X X X
(BA9 - BA0/BFA9 - BFA0)
Buffer 2 (512-/528-bytes)
Byte/Buffer address
X X X X X X X X
Buffer 2 to
Main Memory
Page Program
Buffer 2
WRITE
AT45DB321D [DATASHEET]
LSB
LSB
3597R–DFLASH–11/2012
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