AT45DB021D-SH-B Atmel, AT45DB021D-SH-B Datasheet - Page 36

• Manufacturer Part Number: AT45DB021D-SH-B
• Description: IC FLASH 2MBIT 66MHZ 8SOIC
• Manufacturer: Atmel

Specifications of AT45DB021D-SH-B

• 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
• Architecture: Sectored
• Interface Type: SPI Serial
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Current: 15 mA
• Mounting Style: SMD/SMT
• Organization: 32 KB x 8
• Memory Configuration: 1024 Pages X 264 Bytes
• Clock Frequency: 66MHz
• Supply Voltage Range: 2.7V To 3.6V
• Memory Case Style: SOIC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AT45DB021D-SU; AT45DB021D-SU

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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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