AT45DB041D-SSU-2.5 Atmel, AT45DB041D-SSU-2.5 Datasheet - Page 40

• Manufacturer Part Number: AT45DB041D-SSU-2.5
• Description: IC FLASH 4MBIT 66MHZ 8SOIC
• Manufacturer: Atmel

Specifications of AT45DB041D-SSU-2.5

• Format - Memory: FLASH
• Memory Type: DataFLASH
• Memory Size: 4M (2048 pages x 264 bytes)
• Speed: 66MHz
• Interface: SPI, RapidS
• Voltage - Supply: 2.5 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Architecture: Sectored
• Interface Type: SPI
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.5 V
• Maximum Operating Current: 15 mA
• Mounting Style: SMD/SMT
• Organization: 64 KB x 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

22. Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
22.1
22.2
40
SI (INPUT)
Buffer Write
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
CS
AT45DB041D
SI (INPUT)
CS
represents 8 bits
PAGE (256/264 BYTES)
Each transition
CMD
X
16 DON'T CARE + BFA7-BFA0
CMD
BINARY PAGE SIZE
PAGE PROGRAM
X···X, BFA8
BUFFER (256/264 BYTES)
MAIN MEMORY
FLASH MEMORY ARRAY
BUFFER TO
BUFFER
I/O INTERFACE
WRITE
PA10-7
Starts self-timed erase/program operation
BFA7-0
SI
A18-A8 + 8 DON'T CARE BITS
BINARY PAGE SIZE
n
PA6-0, X
Completes writing into selected buffer
n+1
XXXX XX
n = 1st byte read
n+1 = 2nd byte read
Last Byte
3595P–DFLASH–09/09