AT45DB321D-TU Atmel, AT45DB321D-TU Datasheet - Page 39

IC FLASH 32MBIT 66MHZ 28TSOP

AT45DB321D-TU

Manufacturer Part Number
AT45DB321D-TU
Description
IC FLASH 32MBIT 66MHZ 28TSOP
Manufacturer
Atmel
Datasheets

Specifications of AT45DB321D-TU

Format - Memory
FLASH
Memory Type
DataFLASH
Memory Size
32M (8192 pages x 528 bytes)
Speed
66MHz
Interface
SPI, RapidS
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
28-TSOP
Architecture
Sectored
Interface Type
SPI
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Maximum Operating Current
15 mA
Mounting Style
SMD/SMT
Organization
528 B x 8192
Memory Configuration
8192 Pages X 528 Bytes
Clock Frequency
20MHz
Supply Voltage Range
2.7V To 3.6V
Memory Case Style
TSOP
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT45DB321D-TU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
22. Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
22.1
22.2
3597H–DFLASH–02/07
SI (INPUT)
Buffer Write
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
CS
SI (INPUT)
CS
represents 8 bits
Each transition
PAGE PROGRAM
BUFFER 1 (512/528 BYTES)
MAIN MEMORY
PAGE (512/528 BYTES)
BUFFER 1 TO
CMD
BUFFER 1
WRITE
X
15 DON'T CARE + BFA8-BFA0
CMD
BINARY PAGE SIZE
X···X, BFA9-8
FLASH MEMORY ARRAY
I/O INTERFACE
PA12-6
Starts self-timed erase/program operation
BFA7-0
SI
A21-A9 + 9 DON'T CARE BITS
BINARY PAGE SIZE
AT45DB321D [Preliminary]
BUFFER 2 (512/528 BYTES)
n
PA5-0, XX
Completes writing into selected buffer
n+1
BUFFER 2 TO
MAIN MEMORY
PAGE PROGRAM
BUFFER 2
WRITE
XXXX XX
n = 1st byte read
n+1 = 2nd byte read
Last Byte
39

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