User guide
Table Of Contents
- Features
- 1. Description
- 2. Pin Configurations and Pinouts
- 3. Block Diagram
- 4. Memory Array
- 5. Device Operation
- 6. Read Commands
- 7. Program and Erase Commands
- 8. Sector Protection
- 9. Hardware Controlled Protection
- 10. Security Features
- 11. Additional Commands
- 12. Deep Power-down
- 13. “Power of 2” Binary Page Size Option
- 14. Manufacturer and Device ID Read
- 15. Command Tables
- 16. Power-on/Reset State
- 17. System Considerations
- 18. Electrical Specifications
- 19. Input Test Waveforms and Measurement Levels
- 20. Output Test Load
- 21. AC Waveforms
- 21.1 Waveform 1 – SPI Mode 0 Compatible (for Frequencies up to 66MHz)
- 21.2 Waveform 2 – SPI Mode 3 Compatible (for Frequencies up to 66MHz)
- 21.3 Waveform 3 – RapidS Mode 0 (FMAX = 66MHz)
- 21.4 Waveform 4 – RapidS Mode 3 (FMAX = 66MHz)
- 21.5 Utilizing the RapidS Function
- 21.6 Reset Timing
- 21.7 Command Sequence for Read/Write Operations for Page Size 256-Bytes (Except Status Register Read, Manufacturer and Device ID Read)
- 21.8 Command Sequence for Read/Write Operations for Page Size 264-Bytes (Except Status Register Read, Manufacturer and Device ID Read)
- 22. Write Operations
- 23. Read Operations
- 24. Detailed Bit-level Read Waveform – RapidS Serial Interface Mode 0/Mode 3
- 24.1 Continuous Array Read (Legacy Opcode E8H)
- 24.2 Continuous Array Read (Opcode 0BH)
- 24.3 Continuous Array Read (Low Frequency: Opcode 03H)
- 24.4 Main Memory Page Read (Opcode: D2H)
- 24.5 Buffer Read (Opcode D4H or D6H)
- 24.6 Buffer Read (Low Frequency: Opcode D1H or D3H)
- 24.7 Read Sector Protection Register (Opcode 32H)
- 24.8 Read Sector Lockdown Register (Opcode 35H)
- 24.9 Read Security Register (Opcode 77H)
- 24.10 Status Register Read (Opcode D7H)
- 24.11 Manufacturer and Device Read (Opcode 9FH)
- 25. Auto Page Rewrite Flowchart
- 26. Ordering Information
- 27. Packaging Information
- 28. Revision History
- 29. Errata
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3596N–DFLASH–11/2012
AT45DB081D
15. Command Tables
Table 15-1. Read Commands
Command Opcode
Main Memory Page Read D2H
Continuous Array Read (Legacy Command) E8H
Continuous Array Read (Low Frequency) 03H
Continuous Array Read (High Frequency) 0BH
Buffer 1 Read (Low Frequency) D1H
Buffer 2 Read (Low Frequency) D3H
Buffer 1 Read D4H
Buffer 2 Read D6H
Table 15-2. Program and Erase Commands
Command Opcode
Buffer 1 Write 84H
Buffer 2 Write 87H
Buffer 1 to Main Memory Page Program with Built-in Erase 83H
Buffer 2 to Main Memory Page Program with Built-in Erase 86H
Buffer 1 to Main Memory Page Program without Built-in Erase 88H
Buffer 2 to Main Memory Page Program without Built-in Erase 89H
Page Erase 81H
Block Erase 50H
Sector Erase 7CH
Chip Erase C7H, 94H, 80H, 9AH
Main Memory Page Program Through Buffer 1 82H
Main Memory Page Program Through Buffer 2 85H
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