Owner's manual

15
AT45DB041B
1938F–DFLSH–10/02
Reset Timing (Inactive Clock Polarity Low Shown)
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)
Notes: 1. “r” designates bits reserved for larger densities.
2. It is recommended that “r” be a logical “0” for densities of 4M bits or smaller.
3. For densities larger than 4M bits, the “r” bits become the most significant Page Address bit for the appropriate density.
CS
SCK
RESET
SO
HIGH IMPEDANCE HIGH IMPEDANCE
SI
t
RST
t
REC
t
CSS
SI CMD 8 bits
8 bits
8 bits
MSB
Reserved for
larger densities
Page Address
(PA10-PA0)
Byte/Buffer Address
(BA8-BA0/BFA8-BFA0)
LSBr r r r X X X X X X X X X X X X X X X X X X X X