GD25Q21 Datasheet, PDF (21/49 Pages) ELM Electronics – Uniform Sector Dual and Quad Serial Flash

GD25Q21BxIGx Uniform Sector Dual and Quad Serial Flash
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returning to normal operation. A “Continuous Read Mode” Reset command can be used to reset (M7-0) before
issuing normal command.
Figure 12. Dual I/O Fast Read Sequence Diagram (M7-0 = 0XH or not AXH)
CS#
SCLK
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
SI(IO0)
Command
BBH
6420642064206420
SO(IO1)
7531753175317531
A23-16
A15-8
A7-0
M7-0
CS#
SCLK ^{23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39}
SI(IO0) _{6 4 2 0 6 4 2 0 6 4 2 0 6 4 2 0 6}
SO(IO1)
7531753175317531 7
Byte1
Byte2
Byte3
Byte4
Figure 13. Dual I/O Fast Read Sequence Diagram (M7-0 = AXH)
CS#
SCLK
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
6420642064206420
CS#
SCLK
7531753175317531
A23-16
A15-8
A7-0
M7-0
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
SI(IO0) _{6 4 2 0 6 4 2 0 6 4 2 0 6 4 2 0 6}
SO(IO1)
7531753175317531 7
Byte1
Byte2
Byte3
Byte4
49 - 21
Rev.1.1