AT45DB021D-SH-T Atmel, AT45DB021D-SH-T Datasheet - Page 35

• 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

3638J–DFLASH–5/10
Figure 17-8. Command Sequence for Read/Write Operations for Page Size 264-Bytes (Except Status Register
Figure 17-9. Write Operations
Figure 17-10. Buffer Write
SI (INPUT)
SI (INPUT)
PAGE (256-/264 BYTES)
MSB
CS
Read, Manufacturer and Device ID Read)
The following block diagram and waveforms illustrate the various write sequences available
5 Don’t Care
X X X X X
PAGE PROGRAM
Bits
BUFFER (256-/264-BYTES)
CMD
MAIN MEMORY
FLASH MEMORY ARRAY
BUFFER TO
BUFFER
CMD
I/O INTERFACE
WRITE
8-bits
X X X X
SI
Page Address
(PA9 - PA0)
X
16 DON'T CARE + BFA7-BFA0
8-bits
X X X X
BINARY PAGE SIZE
X···X, BFA8
8-bits
X X X
(BA8 - BA0/BFA8 - BFA0)
BFA7-0
Byte/Buffer Address
X X X X X X X X
n
Completes writing into the buffer
Atmel AT45DB021D
n+1
LSB
Last Byte
35