AT45DB321D ATMEL [ATMEL Corporation], AT45DB321D Datasheet - Page 28

• Manufacturer Part Number: AT45DB321D
• Description: 32-megabit 2.7-volt DataFlash
• Manufacturer: ATMEL [ATMEL Corporation]

15. Command Tables
28
AT45DB321D
Group D commands consist of:
If a Group A command is in progress (not fully completed), then another command in Group A,
B, C, or D should not be started. However, during the internally self-timed portion of Group B
commands, any command in Group C can be executed. The Group B commands using buffer 1
should use Group C commands using buffer 2 and vice versa. Finally, during the internally self-
timed portion of a Group D command, only the Status Register Read command should be
executed.
Table 15-1.
Table 15-2.
Command
Main Memory Page Read
Continuous Array Read (Legacy Command)
Continuous Array Read (Low Frequency)
Continuous Array Read (High Frequency)
Buffer 1 Read (Low Frequency)
Buffer 2 Read (Low Frequency)
Buffer 1 Read
Buffer 2 Read
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
Sector Erase
Chip Erase
Main Memory Page Program Through Buffer 1
Main Memory Page Program Through Buffer 2
1. Erase Sector Protection Register
2. Program Sector Protection Register
3. Sector Lockdown
4. Program Security Register
Read Commands
Program and Erase Commands
C7H, 94H, 80H, 9AH
Opcode
Opcode
3597J–DFLASH–4/08
D2H
7CH
E8H
0BH
D1H
D3H
D4H
D6H
84H
87H
83H
86H
88H
89H
81H
50H
82H
85H
03H