AT45DQ321 datasheet(39/81 Pages) RENESAS

Part #	AT45DQ321

Description	32-Mbit DataFlash (with Extra 1-Mbits), 2.3V Minimum SPI Serial Flash Memory with Dual-I/O and Quad-I/O Support

PDF	81 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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39 / 81 page

AT45DQ321

DS-45DQ321-031G–DFLASH–2/2022

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

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

SCK

MSB

ICC

Opcode

High-impedance

Deep Power-Down Mode Current

Active Current

Standby Mode Current

tRDPD

AT45DQ321 Datasheet(PDF) 39 Page - Renesas Technology Corp