AT45DB081B-CNC Atmel, AT45DB081B-CNC Datasheet - Page 16
![IC FLASH 8MBIT 20MHZ 8CASON](/photos/7/29/72996/453-8-cason_sml.jpg)
AT45DB081B-CNC
Manufacturer Part Number
AT45DB081B-CNC
Description
IC FLASH 8MBIT 20MHZ 8CASON
Manufacturer
Atmel
Datasheet
1.AT45DB081B-CC.pdf
(33 pages)
Specifications of AT45DB081B-CNC
Format - Memory
FLASH
Memory Type
DataFLASH
Memory Size
8M (4096 pages x 264 bytes)
Speed
20MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-CASON
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT45DB081B-CNC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Write
Operations
Main Memory Page Program through Buffers
Buffer Write
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
16
Each transition represents
8 bits and 8 clock cycles
CS
SI
AT45DB081B
CS
SI
PAGE PROGRAM
PAGE (256 BYTES)
BUFFER 1 (256 BYTES)
BUFFER 1 TO
CMD
BUFFER 1
The following block diagram and waveforms illustrate the various write sequences available.
WRITE
CMD
CS
SI
r r r , PA11-7
X
PA6-0, BFA8
CMD
X···X, BFA8
FLASH MEMORY ARRAY
PAGE PROGRAM
THROUGH BUFFER 1
I/O INTERFACE
r r r , PA11-7
THROUGH BUFFER 2
BFA7-0
BFA7-0
PAGE PROGRAM
SI
Starts self-timed erase/program operation
PA6-0, X
n
n
n+1
BUFFER 2 (256 BYTES)
· Completes writing into selected buffer
X
n+1
· Completes writing into selected buffer
· Starts self-timed erase/program operation
BUFFER 2 TO
PAGE PROGRAM
BUFFER 2
WRITE
Last Byte
Last Byte
n = 1st byte read
n+1 = 2nd byte read
2225J–DFLSH–2/08