at25df041a ATMEL Corporation, at25df041a Datasheet - Page 7

• Manufacturer Part Number: at25df041a
• Description: 4-megabit 2.3-volt Or 2.7-volt Minimum Spi Serial Flash Memory
• Manufacturer: ATMEL Corporation

Table 6-1.
Note:
3668C–DFLASH–3/08
Command
Read Commands
Program and Erase Commands
Protection Commands
Status Register Commands
Miscellaneous Commands
Read Array
Read Array (Low Frequency)
Block Erase (4 Kbytes)
Block Erase (32 Kbytes)
Block Erase (64 Kbytes)
Chip Erase
Byte/Page Program (1 to 256 Bytes)
Sequential Program Mode
Write Enable
Write Disable
Protect Sector
Unprotect Sector
Global Protect/Unprotect
Read Sector Protection Registers
Read Status Register
Write Status Register
Read Manufacturer and Device ID
Deep Power-down
Resume from Deep Power-down
1. Three address bytes are only required for the first operation to designate the address to start programming at. Afterwards,
the internal address counter automatically increments, so subsequent Sequential Program Mode operations only require
clocking in of the opcode and the data byte until the Sequential Program Mode has been exited.
Command Listing
ADh
ABh
0Bh
D8h
C7h
AFh
3Ch
9Fh
B9h
03h
20h
52h
60h
02h
06h
04h
36h
39h
05h
01h
Opcode
0011 0110
0011 1100
1001 1111
1010 1011
0000 1011
0000 0011
0010 0000
0101 0010
1101 1000
0110 0000
1100 0111
0000 0010
1010 1101
1010 1111
0000 0110
0000 0100
0011 1001
0000 0101
0000 0001
1011 1001
Use Write Status Register command
AT25DF041A [Preliminary]
Address Bytes
3, 0
3, 0
3
3
3
3
3
0
0
3
0
0
3
3
3
0
0
0
0
0
(1)
(1)
Dummy Bytes
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Data Bytes
1 to 4
1+
1+
1+
1+
1+
0
0
0
0
0
1
1
0
0
0
0
1
0
0
7