ACE25C320G datasheet(14/37 Pages) ACE

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ACE25C320G

Uniform SECTOR Dual and Quad Serial Flash

VER 1.5

Figure6. Read Data Bytes Sequence Diagram

Read Data Bytes At Higher Speed (Fast Read) (0BH)

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.

Figure7. Read Data Bytes at Higher Speed Sequence Diagram

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 Figure8. 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.

ACE25C320G Datasheet(PDF) 14 Page - ACE Technology Co., LTD.