AT25DF021-SSHF-B Atmel, AT25DF021-SSHF-B Datasheet - Page 28

• Manufacturer Part Number: AT25DF021-SSHF-B
• Description: IC FLASH 2MBIT 70MHZ 8SOIC
• Manufacturer: Atmel

Specifications of AT25DF021-SSHF-B

• Format - Memory: FLASH
• Memory Type: DataFLASH
• Memory Size: 2M (256K x 8)
• Speed: 70MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Memory Configuration: 1024 Pages X 256 Bytes
• Interface Type: Serial, SPI
• Clock Frequency: 66MHz
• Supply Voltage Range: 2.3V To 3.6V
• Memory Case Style: SOIC
• Rohs Compliant: Yes
• Data Bus Width: 8 bit
• Architecture: Sectored
• Timing Type: Synchronous
• Access Time: 6 ns
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Current: 16 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.3
28
Resume from Deep Power-Down
AT25DF021
Figure 12-2. Deep Power-Down
In order to exit the Deep Power-Down mode and resume normal device operation, the Resume
from Deep Power-Down command must be issued. The Resume from Deep Power-Down com-
mand is the only command that the device will recognized while in the Deep Power-Down mode.
To resume from the Deep Power-Down mode, the CS pin must first be asserted and opcode of
ABh must be clocked into the device. Any additional data clocked into the device after the
opcode will be ignored. When the CS pin is deasserted, the device will exit the Deep Power-
Down mode within the maximum time of t
has returned to the standby mode, normal command operations such as Read Array can be
resumed.
If the complete opcode is not clocked in before the CS pin is deasserted, or if the CS pin is not
deasserted on an even byte boundary (multiples of eight bits), then the device will abort the
operation and return to the Deep Power-Down mode.
Figure 12-3. Resume from Deep Power-Down
SCK
SCK
SO
I
SO
I
CS
CS
CC
CC
SI
SI
Deep Power-Down Mode Current
Standby Mode Current
HIGH-IMPEDANCE
MSB
HIGH-IMPEDANCE
MSB
1
1
0
0
Active Current
Active Current
0
0
1
1
1
1
2
2
OPCODE
OPCODE
1
0
3
3
RDPD
1
1
4
4
0
0
5
5
and return to the standby mode. After the device
Deep Power-Down Mode Current
0
1
6
6
1
1
7
7
Standby Mode Current
t
t
EDPD
RDPD
3677D–DFLASH–04/09