Owner's manual

11
AT45DB021B
1937F–DFLSH–10/02
Note: r = Reserved Bit
P = Page Address Bit
B = Byte/Buffer Address Bit
x=Don’tCare
Table 4. Detailed Bit-level Addressing Sequence
Opcode Opcode
Address Byte Address Byte Address Byte
Additional
Don’t Care
Bytes
Required
50H 01010000rrrrrPPPPPPPxxxxxxxxxxxx N/A
52H 01010010rrrrrPPPPPPPPPPBBBBBBBBB 4Bytes
53H 01010011rrrrrPPPPPPPPPPxxxxxxxxx N/A
54H 01010100xxxxxxxxxxxxxxxBBBBBBBBB 1Byte
55H 01010101rrrrrPPPPPPPPPPxxxxxxxxx N/A
56H 01010110xxxxxxxxxxxxxxxBBBBBBBBB 1Byte
57H 01010111 N/A N/A N/A N/A
58H 01011000rrrrrPPPPPPPPPPxxxxxxxxx N/A
59H 01011001rrrrrPPPPPPPPPPxxxxxxxxx N/A
60H 01100000rrrrrPPPPPPPPPPxxxxxxxxx N/A
61H 01100001rrrrrPPPPPPPPPPxxxxxxxxx N/A
68H 01101000rrrrrPPPPPPPPPPBBBBBBBBB 4Bytes
81H 10000001rrrrrPPPPPPPPPPxxxxxxxxx N/A
82H 10000010rrrrrPPPPPPPPPPBBBBBBBBB N/A
83H 10000011rrrrrPPPPPPPPPPxxxxxxxxx N/A
84H 10000100xxxxxxxxxxxxxxxBBBBBBBBB N/A
85H 10000101rrrrrPPPPPPPPPPBBBBBBBBB N/A
86H 10000110rrrrrPPPPPPPPPPxxxxxxxxx N/A
87H 10000111xxxxxxxxxxxxxxxBBBBBBBBB N/A
88H 10001000rrrrrPPPPPPPPPPxxxxxxxxx N/A
89H 10001001rrrrrPPPPPPPPPPxxxxxxxxx N/A
D2H 11010010rrrrrPPPPPPPPPPBBBBBBBBB 4Bytes
D4H 11010100xxxxxxxxxxxxxxxBBBBBBBBB 1Byte
D6H 11010110xxxxxxxxxxxxxxxBBBBBBBBB 1Byte
D7H 11010111 N/A N/A N/A N/A
E8H 11101000rrrrrPPPPPPPPPPBBBBBBBBB 4Bytes
Reserved Reserved Reserved Reserved Reserved PA9 PA8 PA7 PA6
PA5
PA4
PA3
PA2
PA1
PA0
BA8
BA7
BA6 BA5 BA4 BA3 BA2 BA1 BA0