AT45DB021E datasheet(36/74 Pages) DIALOG

Part #	AT45DB021E

Description	2-Mbit DataFlash (with Extra 64 kbits) 1.65 V Minimum SPI Serial Flash Memory

PDF	74 Pages

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Manufacturer	DIALOG [Dialog Semiconductor]

Direct Link	http://www.dialog-semiconductor.com/

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36 / 74 page

AT45DB021E

DS-AT45DB021E—8789J—03/2021

11.1 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 returns 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, then the device aborts the operation and

returns to the Deep Power-Down mode.

Figure 11-2. Resume from Deep Power-Down Timing

SCK

MSB

ICC

10101011

Opcode

High-impedance

Deep Power-Down Mode Current

Active Current

Standby Mode Current

tRDPD

AT45DB021E Datasheet(PDF) 36 Page - Dialog Semiconductor