AT45DB021D ATMEL [ATMEL Corporation], AT45DB021D Datasheet - Page 42

• Manufacturer Part Number: AT45DB021D
• Description: 2-megabit 2.7-volt DataFlash
• Manufacturer: ATMEL [ATMEL Corporation]

24.3
24.4
24.5
42
SCK
SCK
SO
SO
CS
CS
SI
SI
Continuous Array Read (Low Frequency: Opcode 03H)
Main Memory Page Read (Opcode: D2H)
Buffer Read (Opcode D4H)
AT45DB021D [Preliminary]
SCK
SO
CS
SI
HIGH-IMPEDANCE
MSB
HIGH-IMPEDANCE
MSB
1
1
0
0
1
1
1
1
0
0
2
OPCODE
2
OPCODE
1
1
3
3
HIGH-IMPEDANCE
MSB
0
0
0
4
4
0
0
1
0
5
1
5
1
0
0
6
2
6
OPCODE
0
0
0
7
7
3
MSB
MSB
A
ADDRESS BITS
BINARY PAGE SIZE = 16 DON'T CARE + BFA7-BFA0
STANDARD DATAFLASH PAGE SIZE =
15 DON'T CARE + BFA8-BFA0
X
0
8
4
8
A
0
X
9
5
9
A
X
1
10 11
10 11
6
ADDRESS BITS
A
X
1
7
MSB
A
A
X
12
12
8
A
A
X
9
ADDRESS BITS A17-A0
A
10 11
A
A
A
29 30
29 30
A
12
A
A
A
A
A
31 32
31 32
MSB
MSB
X
X
32 DON'T CARE BITS
X
X
A
33 34
29 30
33
DON'T CARE
X
A
X
34
X
A
X
31 32
35
MSB
D
X
36
D
X
33
37 38
DATA BYTE 1
X
D
X
62
34
X
D
63
X
35
39
MSB
MSB
D
D
D
64
36
40
D
D
D
65
37 38
41
DATA BYTE 1
DATA BYTE 1
D
D
D
66 67
42 43
D
D
D
39 40
MSB
D
D
D
68
44
D
D
D
69
45
D
D
70
46
D
D
71 72
3638B–DFLASH–02/07
47 48
MSB
MSB
D
D
D
D