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EN25S40 Datasheet(PDF) 10 Page - Eon Silicon Solution Inc.

Part No. EN25S40
Description  4 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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EN25S40 Datasheet(HTML) 10 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.
10
EN25S40
Rev. A, Issue Date: 2009/04/28
Table 4A. Instruction Set
Instruction Name
Byte 1
Code
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
n-Bytes
Write Enable
06h
Write Disable / Exit
OTP mode
04h
Read Status
Register
05h
(S7-S0)(3)
continuous(4)
Write Status
Register
01h
S7-S0
Page Program
02h
A23-A16
A15-A8
A7-A0
D7-D0
Next byte
continuous
Sector Erase / OTP
erase
20h
A23-A16
A15-A8
A7-A0
Block Erase
D8h
A23-A16
A15-A8
A7-A0
Chip Erase
C7h/ 60h
Deep Power-down
B9h
Release from Deep
Power-down, and
read Device ID
dummy
dummy
dummy
(ID7-ID0)
(5)
Release from Deep
Power-down
ABh
00h
(M7-M0)
(ID7-ID0)
Manufacturer/
Device ID
90h
dummy
dummy
01h
(ID7-ID0)
(M7-M0)
(6)
Read Identification
9Fh
(M7-M0)
(ID15-ID8)
(ID7-ID0)
(7)
Enter OTP mode
3Ah
Notes:
1. (BR7-BR0) : The output data of block protection register.
2. The Block Protection Registers contents will repeat continuously until CS# terminates the instruction.
3. Data bytes are shifted with Most Significant Bit first. Byte fields with data in parenthesis “( )” indicate data being read from the
device on the DO pin.
4. The Status Register contents will repeat continuously until CS# terminate the instruction.
5. The Device ID will repeat continuously until CS# terminates the instruction.
6. The Manufacturer ID and Device ID bytes will repeat continuously until CS# terminates the instruction.
00h on Byte 4 starts with MID and alternate with DID, 01h on Byte 4 starts with DID and alternate with MID.
7. (M7-M0) : Manufacturer, (ID15-ID8) : Memory Type, (ID7-ID0) : Memory Capacity.


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