Table 5-4. Program and Erase Commands
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
SCK Mode
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Opcode
84H
87H
83H
86H
88H
89H
81H
50H
82H
85H
Table 5-5. Additional Commands
Command
SCK Mode
Opcode
Main Memory Page to Buffer 1 Transfer
Any
53H
Main Memory Page to Buffer 2 Transfer
Any
55H
Main Memory Page to Buffer 1 Compare
Any
60H
Main Memory Page to Buffer 2 Compare
Any
61H
Auto Page Rewrite through Buffer 1
Any
58H
Auto Page Rewrite through Buffer 2
Any
59H
Note: 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).
10 AT45DB021B
1937J–DFLSH–9/05