AT45DB321E datasheet(43/80 Pages) RENESAS

43 / 80 page

DS-AT45DB321E-8784 Rev. N

Page 43

9/1/23

AT45DB321E Datasheet

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 recognizes 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 are ignored. When the CS pin

is deasserted, the device exits the Deep Power-Down mode and return to the standby mode within the maximum

time of tRDPD. 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 aborts the operation and return to the Deep Power-

Down mode.

Figure 17. Resume from Deep Power-Down

SCK

MSB

ICC

10101011

Opcode

High-impedance

Deep Power-Down Mode Current

Active Current

Standby Mode Current

tRDPD

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