EN25Q64-104FIP datasheet(27/60 Pages) EON

tên linh kiện	EN25Q64-104FIP

Giải thích chi tiết về linh kiện	64 Megabit Serial Flash Memory with 4Kbyte Uniform Sector

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nhà sản xuất	EON [Eon Silicon Solution Inc.]

Trang chủ	http://www.essi.com.tw

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27 / 60 page

This Data Sheet may be revised by subsequent versions

www.eonssi.com

or modifications due to changes in technical specifications.

EN25Q64

Rev. J, Issue Date: 2011/07/07

Dual Output Fast Read (3Bh)

The Dual Output Fast Read (3Bh) is similar to the standard Fast Read (0Bh) instruction except that

data is output on two pins, DQ0 and DQ1, instead of just DQ0. This allows data to be transferred from

the EN25Q64 at twice the rate of standard SPI devices. The Dual Output Fast Read instruction is ideal

for quickly downloading code from to RAM upon power-up or for applications that cache code-

segments to RAM for execution.

Similar to the Fast Read instruction, the Dual Output Fast Read instruction can operation at the highest

possible frequency of FR (see AC Electrical Characteristics). This is accomplished by adding eight

“dummy clocks after the 24-bit address as shown in Figure 13. The dummy clocks allow the device’s

internal circuits additional time for setting up the initial address. The input data during the dummy clock

is “don’t care”. However, the DI pin should be high-impedance prior to the falling edge of the first data

out clock.

Figure 13. Dual Output Fast Read Instruction Sequence Diagram

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