AT26DF081A-SSU Atmel, AT26DF081A-SSU Datasheet - Page 12

• Manufacturer Part Number: AT26DF081A-SSU
• Description: IC FLASH 8MBIT 70MHZ 8SOIC
• Manufacturer: Atmel

Specifications of AT26DF081A-SSU

• Format - Memory: FLASH
• Memory Type: DataFLASH
• Memory Size: 8M (4096 pages x 256 bytes)
• Speed: 70MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 8-3.
Figure 8-4.
12
SO
CS
SI
Seqeuntial Program Mode
Note: Each transition
AT26DF081A
SO
CS
Command
SI
Opcode A
Seqeuntial Program Mode
HIGH-IMPEDANCE
Note: Each transition
Sequential Program Mode – Status Register Polling
Sequential Program Mode – Waiting Maximum Byte Program Time
First Address to Program
Command
23-16
Opcode A
HIGH-IMPEDANCE
A
First Address to Program
15-8
23-16
sectors; therefore, once the highest unprotected memory location in a programming sequence
has been programmed, the device will automatically exit the Sequential Program mode and
reset the WEL bit in the Status Register. For example, if Sector 1 was protected and Sector 0
was currently being programmed, once the last byte of Sector 0 was programmed, the Sequen-
tial Program mode would automatically end. To continue programming with Sector 2, the
Sequential Program mode would have to be restarted by supplying the ADh or AFh opcode, the
three address bytes, and the first byte of Sector 2 to program.
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 Program mode cycle.
The device also incorporates an intelligent programming algorithm that can detect when a byte
location fails to program properly. If a programming error arises, it will be indicated by the EPE
bit in the Status Register.
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
Opcode
Command
Opcode
Data
Data
05h
STATUS REGISTER
t
BP
Seqeuntial Program Mode
DATA
Seqeuntial Program Mode
Command
Opcode
Command
BP
Opcode
time to determine if the byte has fin-
Data
Data
Write Disable
t
Command
BP
04h
Write Disable
Command
04h
05h
3600G–DFLASH–06/09
STATUS REGISTER
DATA