AT45DB321C
Table 9-3.
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
SCK Mode
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Opcode
53H
55H
60H
61H
Security Register Program
Auto Page Rewrite Through Buffer 1
Auto Page Rewrite Through Buffer 2
(2)
Security Register Read
(1)
(1)
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
58H
59H
9AH
77H
Notes:
1. This command should be used for applications requiring a high number of random page writes within a sector. See “Auto
Page Rewrite” on page 8.
2. The Security Register Program command utilizes data stored in Buffer 1. Therefore, this command must be used in conjunc-
tion with the Buffer 1 write command. See “Security Register” on page 14 for details.
19
3387M–DFLASH–2/08
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