AT25SL321 datasheet(43/82 Pages) DIALOG

Part #	AT25SL321

Description	32-Mbit, 1.7 V Minimum SPI Serial Flash Memory with Dual I/O, Quad I/O and QPI Support

PDF	82 Pages

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Manufacturer	DIALOG [Dialog Semiconductor]

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

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43 / 82 page

AT25SL321

DS-25SL321–112H–2020-10

8.23 Deep Power Down (B9h)

Executing the Deep Power Down (DPD) instruction is the best way to put the device in the lowest power

consumption. The Deep Power Down instruction reduces the standby current (from ICC1 to ICC2, as specified in

Section 9.8, AC Electrical Characteristics). The instruction is entered by driving the CS pin low with following the

instruction code B9h. See Figure 8-37 and Figure 8-38.

The CS pin must go high exactly at the byte boundary (the latest eighth bit of instruction code been latched-

in); otherwise, the Deep Power Down instruction is not executed. After CS goes high, it requires a delay of tDP

before Deep Power Down mode is entered. While in DPD mode, only the Release Deep Power Down / Device ID

instruction, which restores the device to normal operation, is recognized. All other instructions are ignored,

including the Read Status Register instruction, which is always available during normal operation. Deep Power

Down Mode automatically stops at power-down, and the device always power-ups in the standby mode.

Figure 8-37. Deep Power Down Instruction (SPI Mode)

Figure 8-38. Deep Power Down Instruction (QPI Mode)

AT25SL321 Datasheet(PDF) 43 Page - Dialog Semiconductor