GD25Q80 Datasheet, PDF (18/49 Pages) ELM Electronics – 3.3V Uniform Sector Dual and Quad Serial Flash

GD25Q80CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash
7.7. Read Data Bytes at Higher Speed (Fast Read) (0BH)
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The Read Data Bytes at Higher Speed (Fast Read) command is for quickly reading data out. It is followed by
a 3-byte address (A23-A0) and a dummy byte, each bit being latched-in during the rising edge of SCLK. Then
the memory content, at that address, is shifted out on SO, each bit being shifted out, at a Max frequency fC,
during the falling edge of SCLK. The first byte addressed can be at any location. The address is automatically
incremented to the next higher address after each byte of data is shifted out.
Figure 8. Read Data Bytes at Higher Speed Sequence Diagram
7.8. Dual Output Fast Read (3BH)
The Dual Output Fast Read command is followed by 3-byte address (A23-A0) and a dummy byte, each bit
being latched in during the rising edge of SCLK, then the memory contents are shifted out 2-bit per clock cycle
from SI and SO. The command sequence is shown in followed Figure9. The first byte addressed can be at any
location. The address is automatically incremented to the next higher address after each byte of data is shifted
out.
Figure 9. Dual Output Fast Read Sequence Diagram
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