at45db041b ATMEL Corporation, at45db041b Datasheet - Page 12

• Manufacturer Part Number: at45db041b
• Description: At45db041b 4-megabit 2.5-volt Or 2.7-volt Dataflash
• Manufacturer: ATMEL Corporation

6. Power-on/Reset State
Table 6-1.
Note:
12
Opcode
D2H
D4H
D6H
D7H
50H
52H
53H
54H
55H
56H
57H
58H
59H
60H
61H
68H
81H
82H
83H
84H
85H
86H
87H
88H
89H
E8H
r = Reserved Bit
P = Page Address Bit
B = Byte/Buffer Address Bit
x = Don’t Care
AT45DB041B
0 1 0 1 0 0 0 0 r
0 1 0 1 0 0 1 0 r
0 1 0 1 0 0 1 1 r
0 1 0 1 0 1 0 0 x
0 1 0 1 0 1 0 1 r
0 1 0 1 0 1 1 0 x
0 1 0 1 0 1 1 1
0 1 0 1 1 0 0 0 r
0 1 0 1 1 0 0 1 r
0 1 1 0 0 0 0 0 r
0 1 1 0 0 0 0 1 r
0 1 1 0 1 0 0 0 r
1 0 0 0 0 0 0 1 r
1 0 0 0 0 0 1 0 r
1 0 0 0 0 0 1 1 r
1 0 0 0 0 1 0 0 x
1 0 0 0 0 1 0 1 r
1 0 0 0 0 1 1 0 r
1 0 0 0 0 1 1 1 x
1 0 0 0 1 0 0 0 r
1 0 0 0 1 0 0 1 r
1 1 0 1 0 0 1 0 r
1 1 0 1 0 1 0 0 x
1 1 0 1 0 1 1 0 x
1 1 0 1 0 1 1 1
1 1 1 0 1 0 0 0 r
Opcode
Detailed Bit-level Addressing Sequence
When power is first applied to the device, or when recovering from a reset condition, the device
will default to SPI Mode 3. In addition, the SO pin will be in a high-impedance state, and a high-
to-low transition on the CS pin will be required to start a valid instruction. The SPI mode will be
automatically selected on every falling edge of CS by sampling the inactive clock state. After
power is applied and V
before an operational mode is started.
r
r
r
x
r
x
r
r
r
r
r
r
r
r
x
r
r
x
r
r
r
x
x
r
r
r
r
x
r
x
r
r
r
r
r
r
r
r
x
r
r
x
r
r
r
x
x
r
Address Byte
r
r
r
x
r
x
r
r
r
r
r
r
r
r
x
r
r
x
r
r
r
x
x
r
N/A
N/A
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
CC
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
is at the minimum datasheet value, the system should wait 20 ms
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
Address Byte
P
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
N/A
N/A
x
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
x
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
x
P
P
x
P
x
P
P
P
P
P
P
P
P
x
P
P
x
P
P
P
x
x
P
x
x
B
x
B
x
x
x
x
x
x
B
x
B
x
x
B
B
B
B
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
Address Byte
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
N/A
N/A
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
3443D–DFLSH–2/08
x
B
x
B
x
B
x
x
x
x
B
x
B
x
B
B
x
B
x
x
B
B
B
B
Don’t Care
Additional
Required
4 Bytes
4 Bytes
4 Bytes
4 Bytes
1 Byte
1 Byte
1 Byte
1 Byte
Bytes
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A