at26f004 ATMEL Corporation, at26f004 Datasheet - Page 6

• Manufacturer Part Number: at26f004
• Description: At26f004 4-megabit 2.7-volt Only Serial Firmware Dataflash Memory
• Manufacturer: ATMEL Corporation

Table 6-1.
Notes:
6
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 Program
Sequential Byte Program Mode
Write Enable
Write Disable
Protect Sector
Unprotect Sector
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 at which to start the programming.
AT26F004
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
0Bh
D8h
C7h
AFh
3Ch
B9h
ABh
03h
20h
52h
60h
02h
06h
04h
36h
39h
05h
01h
9Fh
Opcode
0000 1011
0000 0011
0010 0000
0101 0010
1101 1000
0110 0000
1100 0111
0000 0010
1010 1111
0000 0110
0000 0100
0011 0110
0011 1001
0011 1100
0000 0101
0000 0001
1001 1111
1011 1001
1010 1011
Address
Bytes
3, 0
3
3
3
3
3
0
0
3
0
0
3
3
3
0
0
0
0
0
(1)
Dummy
Bytes
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3588C–DFLASH–04/06
Data Bytes
1 to 4
1+
1+
1+
1+
0
1
0
0
1
0
0
0
0
0
1
0
0
0