AT26DF321-S3U ATMEL [ATMEL Corporation], AT26DF321-S3U Datasheet - Page 24

• Manufacturer Part Number: AT26DF321-S3U
• Description: 32-megabit 2.7-volt Only Serial Firmware DataFlash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

11.3
24
Resume from Deep Power-Down
AT26DF321 [Preliminary]
Figure 11-2. Deep Power-Down
In order 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 recognize 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, then the device will
abort the operation and return to the Deep Power-Down mode.
Figure 11-3. Resume from Deep Power-Down
SCK
SCK
SO
I
SO
I
CS
CS
CC
CC
SI
SI
Standby Mode Current
Deep Power-Down Mode Current
HIGH-IMPEDANCE
HIGH-IMPEDANCE
MSB
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
3633C–DFLASH–08/06