24

3633C–DFLASH–08/06

AT26DF321 [Preliminary]

Figure 11-2. Deep Power-Down

11.3

Resume from 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

CS

SI

SO

MSB

23

1

0

10111001

67

5

4

OPCODE

HIGH-IMPEDANCE

Standby Mode Current

Active Current

Deep Power-Down Mode Current

SCK

CS

SI

SO

MSB

23

1

0

10101011

67

5

4

OPCODE

HIGH-IMPEDANCE

Deep Power-Down Mode Current

Active Current

Standby Mode Current