at45db021a ATMEL Corporation, at45db021a Datasheet - Page 17

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

Detailed Bit-level Read Timing – Inactive Clock Polarity Low (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
0
1
0
1
0
COMMAND OPCODE
COMMAND OPCODE
2
1
HIGH-IMPEDANCE
2
1
2
1
COMMAND OPCODE
3
0
3
0
3
0
HIGH-IMPEDANCE
HIGH-IMPEDANCE
4
1
4
1
4
1
5
0
5
0
5
0
6
1
7
1
60
36
X
X
8
1
61
37
X
X
tV
9
62
38
X
X
MSB
D 7
10
63
39
X
X
STATUS REGISTER OUTPUT
D 6
11
64
40
X
X
tV
tV
D 5
12
65
41
MSB
MSB
D 7
D 7
66
42
DATA OUT
DATA OUT
D 1
16
D 6
D 6
67
43
LSB
D 0
17
D 5
D 5
MSB
D 7
17