AT45DB161B
Reset Timing (Inactive Clock Polarity Low Shown)
CS
SCK
RESET
SO
SI
HIGH IMPEDANCE
t REC
t RST
t CSS
HIGH IMPEDANCE
Note:
The CS signal should be in the high state before the RESET signal is deasserted.
Command Sequence for Read/Write Operations (except Status Register Read)
SI
CMD
8 bits
8 bits
8 bits
MSB
r r X X XXXX
XXXX XXXX
XXXX XXXX
LSB
Reserved for
larger densities
Page Address
(PA11-PA0)
Byte/Buffer Address
(BA9-BA0/BFA9-BFA0)
Notes:
1. “r” designates bits reserved for larger densities.
2. It is recommended that “r” be a logical “0” for densities of 16M bits or smaller.
3. For densities larger than 16M bits, the “r” bits become the most significant Page Address bit for the appropriate density.
15
2224I–DFLSH–10/04
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