AT45DB041E_14 Datasheet, PDF (32/71 Pages) List of Unclassifed Manufacturers – 4-Mbit DataFlash (with Extra 128-Kbits), 1.65V Minimum SPI Serial Flash Memory

10.1
Resume from 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 command 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 then the opcode 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 and return to the standby mode within the maximum time of
t_RDPD. After the device has returned to the standby mode, normal command operations such as Continuous Array Read
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 10-2. Resume from Deep Power-Down
CS
SCK
SI
01234567
Opcode
10101011
MSB
t_RDPD
SO
I_CC
High-impedance
Active Current
Deep Power-Down Mode Current
Standby Mode Current
AT45DB041E 32
8783G–DFLASH–1/2014