AT45DB161B-CI Atmel, AT45DB161B-CI Datasheet - Page 16
AT45DB161B-CI
Manufacturer Part Number
AT45DB161B-CI
Description
IC FLASH 16MBIT 20MHZ 24CBGA
Manufacturer
Atmel
Datasheet
1.AT45DB161B-CC.pdf
(33 pages)
Specifications of AT45DB161B-CI
Format - Memory
FLASH
Memory Type
DataFLASH
Memory Size
16M (4096 pages x 528 bytes)
Speed
20MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
24-CBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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
AT45DB161B
CS
SI
PAGE PROGRAM
MAIN MEMORY
PAGE (528 BYTES)
BUFFER 1 (528 BYTES)
BUFFER 1 TO
CMD
BUFFER 1
CMD
CS
WRITE
SI
r r , PA11-6
The following block diagram and waveforms illustrate the various write sequences
available.
X
PA5-0, BFA9-8
X···X, BFA9-8
CMD
FLASH MEMORY ARRAY
MAIN MEMORY PAGE
PROGRAM THROUGH
BUFFER 1
I/O INTERFACE
r r , PA11-6
THROUGH BUFFER 2
BFA7-0
BFA7-0
PAGE PROGRAM
MAIN MEMORY
SI
Starts self-timed erase/program operation
PA5-0, XX
n
n
n+1
BUFFER 2 (528 BYTES)
· Completes writing into selected buffer
X
n+1
· Completes writing into selected buffer
· Starts self-timed erase/program operation
BUFFER 2 TO
MAIN MEMORY
PAGE PROGRAM
BUFFER 2
WRITE
Last Byte
Last Byte
n = 1st byte read
n+1 = 2nd byte read
2224I–DFLSH–10/04