AT45DB021D-SH-T Atmel, AT45DB021D-SH-T Datasheet - Page 36
![IC FLASH 2MBIT 66MHZ 8SOIC](/photos/6/50/65032/453-8-soic_sml.jpg)
AT45DB021D-SH-T
Manufacturer Part Number
AT45DB021D-SH-T
Description
IC FLASH 2MBIT 66MHZ 8SOIC
Manufacturer
Atmel
Specifications of AT45DB021D-SH-T
Format - Memory
FLASH
Memory Type
DataFLASH
Memory Size
2M (1024 pages x 264 bytes)
Speed
66MHz
Interface
SPI, RapidS
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
Cell Type
NOR
Density
2Mb
Access Time (max)
6ns
Interface Type
Serial (SPI)
Boot Type
Not Required
Address Bus
1b
Operating Supply Voltage (typ)
3/3.3V
Operating Temp Range
-40C to 85C
Package Type
SOIC EIAJ
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
256K
Supply Current
15mA
Mounting
Surface Mount
Pin Count
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT45DB021D-SH-T
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
18.
36
Figure 17-11. Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
Read Operations
The following block diagram and waveforms illustrate the various read sequences available.
Figure 18-1. Main Memory Page Read
SI (INPUT)
Atmel AT45DB021D
SO (OUTPUT)
SI (INPUT)
CS
MAIN MEMORY
PAGE (256-/264-BYTES)
BUFFER (256-/264-BYTES)
CS
PAGE TO
represents 8 bits
BUFFER
BUFFER
Each transition
READ
CMD
CMD
FLASH MEMORY ARRAY
ADDRESS FOR BINARY PAGE SIZE
A16
PA8-7
I/O INTERFACE
SO
PA6-0, BA8
A15-A8
MAIN MEMORY
PAGE READ
PA9-7
Starts self-timed erase/program operation
A17-A8 + 8 DON'T CARE BITS
A7-A0
BINARY PAGE SIZE
BA7-0
PA6-0, X
X
4 Dummy Bytes
XXXX XX
n = 1st byte read
n+1 = 2nd byte read
X
n
n+1
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