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Table 1. Read Commands
Command
Continuous Array Read
Main Memory Page Read
Buffer 1 Read
Buffer 2 Read
Status Register Read
Table 2. Program and Erase Commands
SCK Mode
Inactive Clock Polarity Low or High
SPI Mode 0 or 3
Inactive Clock Polarity Low or High
SPI Mode 0 or 3
Inactive Clock Polarity Low or High
SPI Mode 0 or 3
Inactive Clock Polarity Low or High
SPI Mode 0 or 3
Inactive Clock Polarity Low or High
SPI Mode 0 or 3
Opcode
68H
E8H
52H
D2H
54H
D4H
56H
D6H
57H
D7H
Command
Buffer 1 Write
Buffer 2 Write
Buffer 1 to Main Memory Page Program with Built-in Erase
Buffer 2 to Main Memory Page Program with Built-in Erase
Buffer 1 to Main Memory Page Program without Built-in Erase
Buffer 2 to Main Memory Page Program without Built-in Erase
Page Erase
Block Erase
Main Memory Page Program through Buffer 1
Main Memory Page Program through Buffer 2
Table 3. Additional Commands
Command
Main Memory Page to Buffer 1 Transfer
Main Memory Page to Buffer 2 Transfer
Main Memory Page to Buffer 1 Compare
Main Memory Page to Buffer 2 Compare
Auto Page Rewrite through Buffer 1
Auto Page Rewrite through Buffer 2
SCK Mode
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
SCK Mode
Any
Any
Any
Any
Any
Any
Opcode
84H
87H
83H
86H
88H
89H
81H
50H
82H
85H
Opcode
53H
55H
60H
61H
58H
59H
Note:
10
In Tables 2 and 3, an SCK mode designation of “Any” denotes any one of the four modes of operation (Inactive Clock Polarity
Low, Inactive Clock Polarity High, SPI Mode 0, or SPI Mode 3).
AT45DB081B
2225J–DFLSH–2/08
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