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EN25S16 Datasheet(PDF) 46 Page - Eon Silicon Solution Inc.

Part No. EN25S16
Description  16 Megabit 1.8V Serial Flash Memory with 4Kbyte Uniform Sector
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Maker  EON [Eon Silicon Solution Inc.]
Homepage  http://www.essi.com.tw
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EN25S16 Datasheet(HTML) 46 Page - Eon Silicon Solution Inc.

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This Data Sheet may be revised by subsequent versions
©2004 Eon Silicon Solution, Inc.,
www.eonssi.com
or modifications due to changes in technical specifications.
46
EN25S16
Rev. H, Issue Date: 2011/12/16
OTP mode, user can read other sectors, but program/erase other sectors only allowed when
OTP_LOCK bit equal to ‘0’.
User can use WRDI (04H) command to exit OTP mode.
Erase OTP Command (20h)
User can use Sector Erase (20h) command only to erase OTP data.
The instruction sequence is shown in Figure 34.1 while using the Enable Quad Peripheral Interface mode
(EQPI) (38h) command.
Table 11. OTP Sector Address
Sector
Sector Size
Address Range
511
512 byte
1FF000h – 1FF1FFh
Note:
The OTP sector is mapping to sector 511
Figure 34. Enter OTP Mode
Figure 34.1 Enter OTP Mode Sequence under EQPI Mode


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