AT45DB642D-CNU-SL954 ATMEL [ATMEL Corporation], AT45DB642D-CNU-SL954 Datasheet - Page 44

• Manufacturer Part Number: AT45DB642D-CNU-SL954
• Description: 64-megabit 2.7-volt Dual-interface DataFlash
• Manufacturer: ATMEL [ATMEL Corporation]

24.4
24.5
24.6
44
SCK
SCK
SO
SO
CS
CS
SI
SI
Main Memory Page Read (Opcode: D2H)
Buffer Read (Opcode D4H or D6H)
Buffer Read (Low Frequency: Opcode D1H or D3H)
AT45DB642D
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
1
4
4
0
0
1
1
5
5
1
1
0
0
6
6
2
OPCODE
0
0
1
7
7
3
MSB
MSB
A
ADDRESS BITS
BINARY PAGE SIZE = 14 DON'T CARE + BFA9-BFA0
STANDARD DATAFLASH PAGE SIZE =
13 DON'T CARE + BFA10-BFA0
X
0
8
8
4
A
X
0
9
9
5
A
X
10 11
0
10 11
6
ADDRESS BITS
A
X
1
7
ADDRESS BITS
BINARY PAGE SIZE = 14 DON'T CARE + BFA9-BFA0
STANDARD DATAFLASH PAGE SIZE =
13 DON'T CARE + BFA10-BFA0
MSB
A
X
X
12
12
8
A
X
X
9
X
10 11
X
A
A
29 30
29 30
X
12
A
A
X
A
A
31 32
31 32
MSB
MSB
X
X
32 DON'T CARE BITS
X
X
33 34
A
33
29 30
DON'T CARE
X
X
A
34
X
X
A
35
31 32
MSB
X
D
36
X
D
37 38
33
DATA BYTE 1
X
X
D
62
34
X
63
X
D
39
35
MSB
MSB
D
D
D
64
40
36
D
D
D
65
41
37 38
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
47 48
3542H–DFLASH–4/08
MSB
MSB
D
D
D
D