ACE25QC160GLDPTH datasheet(44/73 Pages) ACE

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ACE25QC160G

16M BIT SPI NOR FLASH

VER 1.2

Release from Deep Power-Down/Read Device ID (ABH)

The Release from Power-Down or Device ID instruction is a multi-purpose instruction. It can be used to

release the device from the Power-Down state or obtain the devices electronic identification (ID) number.

See Figure 26.a (SPI mode) &Figure 26.b (QPI mode), to release the device from the Power-Down state,

the instruction is issued by driving the /CS pin low, shifting the instruction code “ABH” and driving /CS high

Release from Power-Down will take the time duration of tRES1 (See AC Characteristics) before the device

will resume normal operation and other instruction are accepted. The /CS pin must remain high during the

tRES1 time duration.

When used only to obtain the Device ID while not in the Power-Down state, the instruction is initiated by

driving the /CS pin low and shifting the instruction code “ABH” followed by 3-dummy byte. The Device ID

bits are then shifted out on the falling edge of SCLK with most significant bit (MSB) first as shown in The

Device ID value for the ACE25QC160G is listed in Manufacturer and Device Identification table. The

Device ID can be read continuously. The instruction is completed by driving /CS high.

When used to release the device from the Power-Down state and obtain the Device ID, the instruction is

the same as previously described, and shown in Figure 26.c (SPI mode) &Figure 26.d (QPI mode), except

that after /CS is driven high it must remain high for a time duration of tRES2 (See AC Characteristics). After

this time duration the device will resume normal operation and other instruction will be accepted. If the

Release from Power-Down/Device ID instruction is issued while an Erase, Program or Write cycle is in

process (when WIP equal 1) the instruction is ignored and will not have any effects on the current cycle.

Figure 26.a. Release Power-Down Sequence Diagram (SPI mode)

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