Rainbow Electronics AT45DQ321 - Manual (Page 70)

70 AT45DQ321 [ADVANCE DATASHEET]
DS-45DQ321-031–DFLASH–12/2012
Figure 25-11.Read Security Register (Opcode 77h)
Figure 25-12. Status Register Read (Opcode D7h)
Figure 25-13. Manufacturer and Device Read (Opcode 9Fh)
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
Dummy Bits
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
SCK
CS
SI
SO
6 0
9Fh
8 7 46
Opcode
1Fh 00h 01h 00h
Manufacturer ID Device ID
Byte 1
Device ID
Byte 2
EDI
String Length
EDI
Data Byte 1
High-impedance
14 16 15 22 24 23 38 40 39 30 32 31
Note: Each transition shown for SI and SO represents one byte (8 bits)
27h