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EN25S20A Datasheet(PDF) 16 Page - Eon Silicon Solution Inc.

Part No. EN25S20A
Description  2 Megabit 1.8V Serial Flash Memory with 4Kbyte Uniform Sector
Download  65 Pages
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Maker  EON [Eon Silicon Solution Inc.]
Homepage  http://www.essi.com.tw
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EN25S20A Datasheet(HTML) 16 Page - Eon Silicon Solution Inc.

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This Data Sheet may be revised by subsequent versions
©2014 Eon Silicon Solution, Inc.,
www.eonssi.com
or modifications due to changes in technical specifications.
16
EN25S20A
Rev. A, Issue Date: 2014/01/16
Figure 9.1 Write Enable/Disable Instruction Sequence in QPI Mode
Read Status Register (RDSR) (05h)
The Read Status Register (RDSR) instruction allows the Status Register to be read. The Status
Register may be read at any time, even while a Program, Erase or Write Status Register cycle is in
progress. When one of these cycles is in progress, it is recommended to check the Write In Progress
(WIP) bit before sending a new instruction to the device. It is also possible to read the Status Register
continuously, as shown in Figure 10.
The instruction sequence is shown in Figure 10.1 while using the Enable Quad Peripheral Interface
mode (EQPI) (38h) command.
Figure 10. Read Status Register Instruction Sequence Diagram


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