Rainbow Electronics AT45DQ321 User Manual
Page 49
49
AT45DQ321 [ADVANCE DATASHEET]
DS-45DQ321-031–DFLASH–12/2012
Table 15-5. Legacy Commands
Note:
1. Legacy commands are not recommended for new designs.
2. Legacy commands operate from 2.30V to 3.60V Vcc only.
Table 15-6. Detailed Bit-level Addressing Sequence for Binary Page Size (512 bytes)
Command
Opcode
Buffer 1 Read
54H
Buffer 2 Read
56H
Main Memory Page Read
52H
Continuous Array Read
68H
Status Register Read
57H
Page Size = 512 bytes
Address Byte
Address Byte
Address Byte
Additional
Dummy
Bytes
Opcode
Opcode
Reserved
Reserved
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A1
1
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
01h
0
0
0
0
0
0
0
1
X X A A A A A A A A A A A A A A A A A A A A A A
N/A
02h
0
0
0
0
0
0
1
0
X X A A A A A A A A A A A A A A A A A A A A A A
N/A
03h
0
0
0
0
0
0
1
1
X X A A A A A A A A A A A A A A A A A A A A A A
N/A
0Bh
0
0
0
0
1
0
1
1
X X A A A A A A A A A A A A A A A A A A A A A A
1
1Bh
0
0
0
1
1
0
1
1
X X A A A A A A A A A A A A A A A A A A A A A A
2
24h
0
0
1
0
0
1
0
0
X X X X X X X X X X X X X X X A A A A A A A A A
N/A
27h
0
0
1
0
0
1
1
1
X X X X X X X X X X X X X X X A A A A A A A A A
N/A
32h
0
0
1
1
0
0
1
0
X X X X X X X X X X X X X X X X X X X X X X X X
N/A
35h
0
0
1
1
0
1
0
1
X X X X X X X X X X X X X X X X X X X X X X X X
N/A
3Bh
0
0
1
1
1
0
1
1
X X A A A A A A A A A A A A A A A A A A A A A A
1
3Fh
0
0
1
1
1
1
1
1
X X X X X X X X X X X X X X X X X X X X X X X X
N/A
44h
0
1
0
0
0
1
0
0
X X X X X X X X X X X X X X X A A A A A A A A A
N/A
47h
0
1
0
0
0
1
1
1
X X X X X X X X X X X X X X X A A A A A A A A A
N/A
50h
0
1
0
1
0
0
0
0
X X A A A A A A A A A A X X X X X X X X X X X X
N/A
53h
0
1
0
1
0
0
1
1
X X A A A A A A A A A A A A A X X X X X X X X X
N/A
55h
0
1
0
1
0
1
0
1
X X A A A A A A A A A A A A A X X X X X X X X X
N/A
58h
0
1
0
1
1
0
0
0
X X A A A A A A A A A A A A A X X X X X X X X X
N/A
59h
0
1
0
1
1
0
0
1
X X A A A A A A A A A A A A A X X X X X X X X X
N/A
60h
0
1
1
0
0
0
0
0
X X A A A A A A A A A A A A A X X X X X X X X X
N/A
61h
0
1
1
0
0
0
0
1
X X A A A A A A A A A A A A A X X X X X X X X X
N/A
6Bh
0
1
1
0
1
0
1
1
X X A A A A A A A A A A A A A A A A A A A A A A
1
77h
0
1
1
1
0
1
1
1
X X X X X X X X X X X X X X X X X X X X X X X X
N/A
79h
0
1
1
1
1
0
0
1
N/A
N/A
N/A
N/A
7Ch
0
1
1
1
1
1
0
0
X X A A A A A A
X X X X X X X X X X X X X X X X
N/A
81h
1
0
0
0
0
0
0
1
X X A A A A A A A A A A A A A X X X X X X X X X
N/A
82h
1
0
0
0
0
0
1
0
X X A A A A A A A A A A A A A A A A A A A A A A
N/A
83h
1
0
0
0
0
0
1
1
X X A A A A A A A A A A A A A X X X X X X X X X
N/A
84h
1
0
0
0
0
1
0
0
X X X X X X X X X X X X X X X A A A A A A A A A
N/A
85h
1
0
0
0
0
1
0
1
X X A A A A A A A A A A A A A A A A A A A A A A
N/A
86h
1
0
0
0
0
1
1
0
X X A A A A A A A A A A A A A X X X X X X X X X
N/A
87h
1
0
0
0
0
1
1
1
X X X X X X X X X X X X X X X A A A A A A A A A
N/A
88h
1
0
0
0
1
0
0
0
X X A A A A A A A A A A A A A X X X X X X X X X
N/A