AT45DB011B-XI Atmel, AT45DB011B-XI Datasheet - Page 16
![IC FLASH 1MBIT 20MHZ 14TSSOP](/photos/7/29/72988/453-14-tssop_sml.jpg)
AT45DB011B-XI
Manufacturer Part Number
AT45DB011B-XI
Description
IC FLASH 1MBIT 20MHZ 14TSSOP
Manufacturer
Atmel
Datasheet
1.AT45DB011B-SC.pdf
(32 pages)
Specifications of AT45DB011B-XI
Format - Memory
FLASH
Memory Type
DataFLASH
Memory Size
1M (512 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
14-TSSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Write
Operations
Main Memory Page Program through Buffer
Buffer Write
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
16
CS
SI
Each transition represents
8 bits and 8 clock cycles
CS
SI
AT45DB011B
CMD
CMD
CS
SI
The following block diagram and waveforms illustrate the various write sequences available.
r ···r , PA8-7
X
PAGE (264 BYTES)
PA6-0, BFA8
X···X, BFA8
CMD
r ···r , PA8-7
BFA7-0
BFA7-0
PAGE PROGRAM
MAIN MEMORY
Starts self-timed erase/program operation
BUFFER (264 BYTES)
FLASH MEMORY ARRAY
BUFFER TO
PA6-0, X
BUFFER
n
I/O INTERFACE
WRITE
n
SI
n+1
· Completes writing into buffer
n+1
X
· Completes writing into buffer
· Starts self-timed erase/program operation
MAIN MEMORY PAGE
PROGRAM THROUGH
BUFFER
n = 1st byte written
n+1 = 2nd byte written
Last Byte
Last Byte
1984J–DFLASH–06/06