ATXP032 datasheet(84/113 Pages) DIALOG

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ATXP032

DS-ATXP032–114I–4-2020

Figure 13-10. Ultra-Deep Power-Down in Octal Mode — DDR

13.6

Auto Ultra-Deep Power-Down Mode after a Program or Erase Operation

The auto Ultra-deep Power-down (UDPD) mode after a program or erase operation allows the device to further

reduce its energy consumption by automatically entering the ultra-deep power-down mode after completing an

internally timed program or erase operation. The program or erase operation can be any one of the Block Erase or

Chip Erase commands, Byte/Page Program command or Buffer to Main Memory Page Program without Built-In

Erase commands. Note that the Buffer Write command or any of the Register Write commands do not cause the

device to go into ultra-deep power-down mode.

The auto UDPD mode after a program/erase operation is enabled by setting the Auto Ultra-Deep Power-Down

Enable (AUDPD) bit in Status/Control Register Byte 2 . The AUDPD bit is cleared every time the device goes into

UDPD mode, so it has to be set again if another program or erase operation followed by auto ultra-deep power-

down is wanted.

When using auto ultra-deep power-down mode after a program/erase operation, the device switches to standard

SPI mode within tAUDPD after the program or erase command is initiated. All Status read operations, both while the

program or erase operation is still in progress and after the device has entered UDPD, can therefore be done using

standard SPI mode.

13.7

Exit Ultra-Deep Power-Down

An exit from the UDPD mode can be performed in one of the following ways:

JEDEC hardware reset

Asserting the hardware RESET pin

Power cycling the device

Upon recovery from ultra-deep power-down, all internal registers except the EPE bit in Status/Control Register

Byte 1 are at the power-on default state. See the description in Section 12.1.3, EPE Bit for details of what values

EPE may have upon recovery from UDPD.

The device wakes up in SPI mode even if it was in octal mode when it entered the UDPD state. The system must

wait for the device to return to the standby mode before normal command operations can be resumed.

[Note: “Chip Select Toggle” and “Chip Select Low”, which are the methods used on many other Adesto devices

to exit UDPD mode, are not implemented on the ATXP032, as this would make status read while in UDPD mode

impossible without waking up the device.

EUDPD

ICC

Ultra-Deep Power-Mode Current

Standby Mode Current

Active Current

79h

Opcode

I/O7-0

SCK

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