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Table 9-1.
Read Commands
Command
Continuous Array Read
Main Memory Page Read
Buffer 1 Read
Buffer 2 Read
Status Register Read
Manufacturer and Device ID
SCK Mode
RapidS Mode 0 or 3
Inactive Clock Polarity Low or High
RapidS Mode 0 or 3
Inactive Clock Polarity Low or High
RapidS Mode 0 or 3
Inactive Clock Polarity Low or High
RapidS Mode 0 or 3
Inactive Clock Polarity Low or High
RapidS Mode 0 or 3
Inactive Clock Polarity Low or High
RapidS Mode 0 or 3
Opcode
E8H
68H
D2H
52H
D4H
54H
D6H
56H
D7H
57H
9FH
Note:
1. Legacy Opcodes 52H, 54H, 56H, 57H, and 68H are still supported for reasons of backward compatibility only and are not
recommended for new designs. The inactive clock polarity high or low modes will not be supported in the future products.
Table 9-2.
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
AT45DB321C
18
SCK Mode
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Mode 0, Mode 3
Opcode
84H
87H
83H
86H
88H
89H
81H
50H
82H
85H
3387M–DFLASH–2/08
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