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GD25LB32D Datasheet(Arkusz danych) 38 Page - GigaDevice Semiconductor (Beijing) Inc.

Numer części GD25LB32D
Szczegółowy opis  1.8V Uniform Sector Dual and Quad Serial Flash
Pobierz  67 Pages
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Producent  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Strona internetowa  http://www.gigadevice.com/
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 38 page
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1.8V Uniform Sector
Dual and Quad Serial Flash
GD25LB32D
38
7.22.
Release from Deep Power-Down and Read Device ID (RDI) (ABH)
The Release from Power-Down and Read 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 Figure22. Release from Power-Down will take the time duration
of tRES1 (See AC Characteristics) before the device will resume normal operation and other c omma nd 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 Figure23. The Device ID value for the
GD25LB32D 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 Figure23, 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.
Figure22. Release Power-Down Sequence Diagram
Command
0
1
2
3
4
5
6
7
ABH
CS#
SCLK
SI
RES1
Stand-by mode
Deep Power-down mode
t
Figure22a. Release Power-Down Sequence Diagram (QPI)
CS#
SCLK
IO0
IO1
IO2
IO3
0
1
Command
ABH
tRES1
Deep Power-down mode
Stand-by mode




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