ACE25C160G Datasheet, PDF (23/36 Pages) ACE Technology Co., LTD. – Uniform SECTOR Dual and Quad Serial Flash

ACE25C160G
Uniform SECTOR Dual and Quad Serial Flash
Figure19. Deep Power-Down Sequence Diagram
Release from Deep Power-Down And Read Device ID (RDI) (ABH)
The Release from Power-Down or Device ID command is a multi-purpose command. It can be used
to release the device from the Power-Down state or obtain the devices electronic identification (ID)
number.
To release the device from the Power-Down state, the command is issued by driving the CS# pin
low, shifting the instruction code “ABH” and driving CS# high as shown in Figure20. Release from
Power-Down will take the time duration of tRES1 (See AC Characteristics) before the device will
resume normal operation and other command 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 command 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 Figure20. The Device ID value for the ACE25C160G is listed in
Manufacturer and Device Identification table. The Device ID can be read continuously. The
command is completed by driving CS# high.
When used to release the device from the Power-Down state and obtain the Device ID, the
command is the same as previously described, and shown in Figure20, 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 command will be accepted. If the
Release from Power-Down / Device ID command is issued while an Erase, Program or Write cycle
is in process (when WIP equal 1) the command is ignored and will not have any effects on the
current cycle.
Figure 20. Release Power-Down Sequence Diagram
VER 1.5 23