Instruction Manual

29
3597J–DFLASH–4/08
AT45DB321D
Note: 1. These legacy commands are not recommended for new designs.
Table 15-3. Protection and Security Commands
Command Opcode
Enable Sector Protection 3DH + 2AH + 7FH + A9H
Disable Sector Protection 3DH + 2AH + 7FH + 9AH
Erase Sector Protection Register 3DH + 2AH + 7FH + CFH
Program Sector Protection Register 3DH + 2AH + 7FH + FCH
Read Sector Protection Register 32H
Sector Lockdown 3DH + 2AH + 7FH + 30H
Read Sector Lockdown Register 35H
Program Security Register 9BH + 00H + 00H + 00H
Read Security Register 77H
Table 15-4. Additional Commands
Command Opcode
Main Memory Page to Buffer 1 Transfer 53H
Main Memory Page to Buffer 2 Transfer 55H
Main Memory Page to Buffer 1 Compare 60H
Main Memory Page to Buffer 2 Compare 61H
Auto Page Rewrite through Buffer 1 58H
Auto Page Rewrite through Buffer 2 59H
Deep Power-down B9H
Resume from Deep Power-down ABH
Status Register Read D7H
Manufacturer and Device ID Read 9FH
Table 15-5. Legacy Commands
(1)
Command Opcode
Buffer 1 Read 54H
Buffer 2 Read 56H
Main Memory Page Read 52H
Continuous Array Read 68H
Status Register Read 57H