AT45DB642D-CNU SL954 Atmel, AT45DB642D-CNU SL954 Datasheet - Page 41

• Manufacturer Part Number: AT45DB642D-CNU SL954
• Manufacturer: Atmel

Specifications of AT45DB642D-CNU SL954

• Density: 64Mb
• Access Time (max): 6ns
• Interface Type: Parallel/Serial-SPI
• Address Bus: 1/8Bit
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: CASON
• Program/erase Volt (typ): 2.7 to 3.6V
• Sync/async: Synchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8b
• Number Of Words: 8M
• Supply Current: 15mA
• Mounting: Surface Mount
• Pin Count: 8
• Lead Free Status / Rohs Status: Compliant

21.10 Command Sequence for Read/Write Operations for Page Size 1024 Bytes (Except Status
21.11 Command Sequence for Read/Write Operations for Page Size 1056 Bytes (Except Status
22. Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
3542K–DFLASH–04/09
Register Read, Manufacturer and Device ID Read)
Register Read, Manufacturer and Device ID Read)
SI or I/O7 - I/O0
SI or I/O7 - I/O0
MSB
(INPUT)?
MSB
(INPUT)?
BUFFER 1 (1024/1056 BYTES)
PAGE PROGRAM
MAIN MEMORY
PAGE (1024/1056 BYTES)
BUFFER 1 TO
X X X X X X X X
BUFFER 1
Page Address
(PA12 - PA0)
X X X X X X X
WRITE
Page Address
CMD
(A22 - A10)
SI
CMD
FLASH MEMORY ARRAY
X X X X X X X X
8 bits
X X X X X X X X
I/O INTERFACE
8 bits
8 bits
(BA10 - BA0/BFA10 - BFA0)
8 bits
Byte/Buffer Address
(A9 - A0/BFA9 - BFA0)
BUFFER 2 (1024/1056 BYTES)
I/O7 - I/O0
Byte/Buffer Address
8 bits
X X X X X X X X
8 bits
X X X X X X X X
BUFFER 2 TO
MAIN MEMORY
PAGE PROGRAM
BUFFER 2
WRITE
LSB
LSB
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