at26f004 ATMEL Corporation, at26f004 Datasheet - Page 10

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

Figure 8-2.
Figure 8-3.
10
SO
CS
SI
Seqeuntial Program Mode
Note: Each transition
AT26F004
SO
CS
Command
SI
AFh
Seqeuntial Program Mode
HIGH-IMPEDANCE
Note: Each transition
Sequential Byte Program Mode – Status Register Polling
Sequential Byte Program Mode – Waiting Maximum Byte Program Time
First Address to Program
A
Command
23-16
AFh
HIGH-IMPEDANCE
A
First Address to Program
15-8
A
23-16
While the device is programming a byte, the Status Register can be read and will indicate that
the device is busy. For faster throughput, it is recommended that the Status Register be polled at
the end of each program cycle rather than waiting the t
ished programming before starting the next Sequential Byte Program mode cycle.
A
7-0
shown for SI represents one byte (8 bits)
A
15-8
Data
A
7-0
Status Register Read
shown for SI represents one byte (8 bits)
Command
Data
05h
STATUS REGISTER
DATA
t
BP
Seqeuntial Program Mode
Seqeuntial Program Mode
Command
Command
AFh
AFh
Data
Data
05h
STATUS REGISTER
t
BP
Seqeuntial Program Mode
DATA
Seqeuntial Program Mode
Command
AFh
Command
BP
AFh
time to determine if the byte has fin-
Data
Data
Write Disable
t
Command
BP
04h
Write Disable
Command
04h
05h
3588C–DFLASH–04/06
STATUS REGISTER
DATA