Sck cs si so – Rainbow Electronics AT45DB021D User Manual
Page 40
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40
3638K–DFLASH–11/2012
AT45DB021D
Figure 19-8. Read Sector Lockdown Register (Opcode 35H)
Figure 19-9. Read Security Register (Opcode 77H)
Figure 19-10. Status Register Read (Opcode D7H)
SCK
CS
SI
SO
MSB
MSB
2
3
1
0
0
0
1
1
0
1
0
1
6
7
5
4
10 11
9
8
12
37 38
33
36
35
34
31 32
29 30
39 40
OPCODE
X
X
X
X
X
X
X
X
X
MSB
MSB
D
D
D
D
D
D
D
D
D
DON'T CARE
DATA BYTE 1
HIGH-IMPEDANCE
SCK
CS
SI
SO
MSB
MSB
2
3
1
0
0
1
1
1
0
1
1
1
6
7
5
4
10 11
9
8
12
37 38
33
36
35
34
31 32
29 30
39 40
OPCODE
X
X
X
X
X
X
X
X
X
MSB
MSB
D
D
D
D
D
D
D
D
D
DON'T CARE
DATA BYTE 1
HIGH-IMPEDANCE
SCK
CS
SI
SO
MSB
2
3
1
0
1
1
0
1
0
1
1
1
6
7
5
4
10 11
9
8
12
21 22
17
20
19
18
15 16
13 14
23 24
OPCODE
MSB
MSB
D
D
D
D
D
D
D
D
D
D
MSB
D
D
D
D
D
D
D
D
STATUS REGISTER DATA
STATUS REGISTER DATA
HIGH-IMPEDANCE
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