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EN25S10 Datasheet(PDF) 16 Page - Eon Silicon Solution Inc.

Part No. EN25S10
Description  1 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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EN25S10 Datasheet(HTML) 16 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.
16
EN25S10
Rev. F, Issue Date: 2011/11/07
Page Program (PP) (02h)
The Page Program (PP) instruction allows bytes to be programmed in the memory. Before it can be
accepted, a Write Enable (WREN) instruction must previously have been executed. After the Write
Enable (WREN) instruction has been decoded, the device sets the Write Enable Latch (WEL).
The Page Program (PP) instruction is entered by driving Chip Select (CS#) Low, followed by the in-
struction code, three address bytes and at least one data byte on Serial Data Input (DI). If the 8 least
significant address bits (A7-A0) are not all zero, all transmitted data that goes beyond the end of the
current page are programmed from the start address of the same page (from the address whose 8
least significant bits (A7-A0) are all zero). Chip Select (CS#) must be driven Low for the entire duration
of the sequence.
The instruction sequence is shown in Figure 11. If more than 256 bytes are sent to the device, pre-
viously latched data are discarded and the last 256 data bytes are guaranteed to be programmed cor-
rectly within the same page. If less than 256 Data bytes are sent to device, they are correctly pro-
grammed at the requested addresses without having any effects on the other bytes of the same page.
Chip Select (CS#) must be driven High after the eighth bit of the last data byte has been latched in,
otherwise the Page Program (PP) instruction is not executed.
As soon as Chip Select (CS#) is driven High, the self-timed Page Program cycle (whose duration is tPP)
is initiated. While the Page Program cycle is in progress, the Status Register may be read to check the
value of the Write In Progress (WIP) bit. The Write In Progress (WIP) bit is 1 during the self-timed Page
Program cycle, and is 0 when it is completed. At some unspecified time before the cycle is completed,
the Write Enable Latch (WEL) bit is reset.
A Page Program (PP) instruction applied to a page which is protected by the Block Protect (BP2, BP1,
BP0) bits (see Table 3) is not executed.
Figure 11. Page Program Instruction Sequence Diagram


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