at45db021a ATMEL Corporation, at45db021a Datasheet - Page 19

• Manufacturer Part Number: at45db021a
• Description: 2-megabit 2.7-volt Only Serial Dataflash
• Manufacturer: ATMEL Corporation

Detailed Bit-level Read Timing – Inactive Clock Polarity High (Continued)
Main Memory Page Read (Opcode: 52H)
Buffer Read (Opcode: 54H or 56H)
Status Register Read (Opcode: 57H)
SCK
SO
CS
SCK
SCK
SI
SO
SO
CS
CS
SI
SI
tSU
tSU
tSU
1
1
1
0
0
0
2
HIGH-IMPEDANCE
COMMAND OPCODE
COMMAND OPCODE
2
2
1
1
1
3
COMMAND OPCODE
3
3
0
0
0
4
HIGH-IMPEDANCE
HIGH-IMPEDANCE
4
4
1
1
1
5
5
5
0
0
0
6
1
7
1
X
X
8
tV
61
37
1
X
X
9
62
38
MSB
D 7
X
X
10
63
39
D 6
STATUS REGISTER OUTPUT
X
X
11
64
40
tV
tV
D 5
X
X
12
65
41
D 4
MSB
MSB
D 7
D 7
66
42
DATA OUT
DATA OUT
D 6
D 6
67
43
LSB
D 0
D 5
D 5
17
MSB
68
44
D 7
D 4
D 4
18
D 6
19