W25Q20BWUXIG 参数 Datasheet PDF下载

W25Q20BW

8.2.11

Fast Read (0Bh)

The Fast Read instruction is similar to the Read Data instruction except that it can operate at the highest

possible frequency of F

R

(see AC Electrical Characteristics). This is accomplished by adding eight

“dummy” clocks after the 24-bit address as shown in figure 10. The dummy clocks allow the devices

internal circuits additional time for setting up the initial address. During the dummy clocks the data value

on the DO pin is a “don’t care”.

Figure 10. Fast Read Instruction Sequence Diagram

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Publication Release Date: January 25, 2011

Preliminary - Revision B