24.9 Read Security Register (Opcode 77H)
CS
0
1
2
3
4
5
6
7
8
9
10 11 12
29 30 31 32 33 34 35 36 37 38 39 40
SCK
SI
OPCODE
DON'T CARE
0
1
1
1
0
1
1
1
X
X
X
X
X
X
X
X
X
MSB
MSB
DATA BYTE 1
HIGH-IMPEDANCE
D
D
D
D
D
D
D
D
D
SO
MSB
MSB
24.10 Status Register Read (Opcode D7H)
CS
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
SCK
SI
OPCODE
1
1
0
1
0
1
1
1
MSB
STATUS REGISTER DATA
STATUS REGISTER DATA
HIGH-IMPEDANCE
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
SO
MSB
MSB
MSB
24.11 Manufacturer and Device Read (Opcode 9FH)
CS
0
6
7
8
14 15 16
22 23 24
30 31 32
38
SCK
SI
OPCODE
9FH
HIGH-IMPEDANCE
1FH
DEVICE ID BYTE 1 DEVICE ID BYTE 2
00H
SO
Note: Each transition
shown for SI and SO represents one byte (8 bits)
44
AT45DB321D
3597J–DFLASH–4/08
ATMEL [ ATMEL ]
