GD25LQ40XIGX Datasheet, PDF (39/59 Pages) ELM Technology Corporation – 1.8V Uniform Sector Dual and Quad Serial Flash

GD25LQ40xIGx 1.8V Uniform Sector Dual and Quad Serial Flash
7.24. Read Manufacture ID/Device ID Quad I/O (94H)
http://www.elm-tech.com
The Read Manufacturer/Device ID Quad I/O command is an alternative to the Release from Power-Down/
Device ID command that provides both the JEDEC assigned Manufacturer ID and the specific Device ID by
quad I/O.
The command is initiated by driving the CS# pin low and shifting the command code “94H” followed by a
24-bit address (A23-A0) of 000000H. After which, the Manufacturer ID and the Device ID are shifted out on
the falling edge of SCLK with most significant bit (MSB) first as shown in Figure26. If the 24-bit address is
initially set to 000001H, the Device ID will be read first.
Figure 26. Read Manufacture ID/Device ID Quad I/O Sequence Diagram
CS#
SCLK
SI(IO0)
SO(IO1)
WP#(IO2)
HOLD#(IO3)
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Command
94H
40404040
4040
51515151
5151
62626262
6262
73737373
A23-16 A15-8 A7-0 M7-0
Dummy
7373
MFR ID DID
CS#
SCLK
24 25 26 27 28 29 30 31
SI(IO0)
40404040
SO(IO1)
51515151
WP#(IO2) _{6 2 6 2 6 2 6 2}
HOLD#(IO3) _{7 3 7 3 7 3 7 3}
MFR ID DID MFR ID DID
(Repeat()Repeat()Repeat()Repeat)
59 - 39
Rev.1.0