AT45DB161B-TU Atmel, AT45DB161B-TU Datasheet - Page 16

• Manufacturer Part Number: AT45DB161B-TU
• Manufacturer: Atmel

Specifications of AT45DB161B-TU

• Density: 16Mb
• Access Time (max): 20ns
• 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: TSOP-I
• 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
• Supply Current: 10mA
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / Rohs Status: Compliant

Write Operations
Main Memory Page Program through Buffers
Buffer Write
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
16
Each transition represents
8 bits and 8 clock cycles
CS
SI
AT45DB161B
CS
SI
PAGE PROGRAM
MAIN MEMORY
PAGE (528 BYTES)
BUFFER 1 (528 BYTES)
BUFFER 1 TO
CMD
BUFFER 1
CMD
CS
WRITE
SI
r r , PA11-6
The following block diagram and waveforms illustrate the various write sequences
available.
X
PA5-0, BFA9-8
X···X, BFA9-8
CMD
FLASH MEMORY ARRAY
MAIN MEMORY PAGE
PROGRAM THROUGH
BUFFER 1
I/O INTERFACE
r r , PA11-6
THROUGH BUFFER 2
BFA7-0
BFA7-0
PAGE PROGRAM
MAIN MEMORY
SI
Starts self-timed erase/program operation
PA5-0, XX
n
n
n+1
BUFFER 2 (528 BYTES)
· Completes writing into selected buffer
X
n+1
· Completes writing into selected buffer
· Starts self-timed erase/program operation
BUFFER 2 TO
MAIN MEMORY
PAGE PROGRAM
BUFFER 2
WRITE
Last Byte
Last Byte
n = 1st byte read
n+1 = 2nd byte read
2224I–DFLSH–10/04