11
AT45DB321B
2223D–DFLASH–10/02
Note: r = Reserved Bit
P = Page Address Bit
B = Byte/Buffer Address Bit
x = Don’t Care
Table 4. Detailed Bit-level Addressing Sequence
Opcode Opcode
Address Byte Address Byte Address Byte
Additional
Don’t Care
Bytes
Required
50H 01010000r PPPPPPPPPPxxxxxxxxxxxxx N/A
52H 01010010r PPPPPPPPPPPPPBBBBBBBBBB 4 Bytes
53H 01010011r PPPPPPPPPPPPPxxxxxxxxxx N/A
54H 01010100xxxxxxxxxxxxxxBBBBBBBBBB 1 Byte
55H 01010101r PPPPPPPPPPPPPxxxxxxxxxx N/A
56H 01010110xxxxxxxxxxxxxxBBBBBBBBBB 1 Byte
57H 01010111 N/A N/A N/A N/A
58H 01011000r PPPPPPPPPPPPPxxxxxxxxxx N/A
59H 01011001r PPPPPPPPPPPPPxxxxxxxxxx N/A
60H 01100000r PPPPPPPPPPPPPxxxxxxxxxx N/A
61H 01100001r PPPPPPPPPPPPPxxxxxxxxxx N/A
68H 01101000r PPPPPPPPPPPPPBBBBBBBBBB 4 Bytes
81H 10000001r PPPPPPPPPPPPPxxxxxxxxxx N/A
82H 10000010r PPPPPPPPPPPPPBBBBBBBBBB N/A
83H 10000011r PPPPPPPPPPPPPxxxxxxxxxx N/A
84H 10000100xxxxxxxxxxxxxxBBBBBBBBBB N/A
85H 10000101r PPPPPPPPPPPPPBBBBBBBBBB N/A
86H 10000110r PPPPPPPPPPPPPxxxxxxxxxx N/A
87H 10000111xxxxxxxxxxxxxxBBBBBBBBBB N/A
88H 10001000r PPPPPPPPPPPPPxxxxxxxxxx N/A
89H 10001001r PPPPPPPPPPPPPxxxxxxxxxx N/A
D2H 11010010r PPPPPPPPPPPPPBBBBBBBBBB 4 Bytes
D4H 11010100xxxxxxxxxxxxxxBBBBBBBBBB 1 Byte
D6H 11010110xxxxxxxxxxxxxxBBBBBBBBBB 1 Byte
D7H 11010111 N/A N/A N/A N/A
E8H 11101000r PPPPPPPPPPPPPBBBBBBBBBB 4 Bytes
eserve
12
11
10
9
PA8
PA7
6
5
4
3
2
1
0
9
8
BA7
BA6
5
4
3
2
1
0