Rainbow Electronics AT45DB021D - Manual (Page 40)

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