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EN25F32 Datasheet, PDF (14/40 Pages) Eon Silicon Solution Inc. – 32 Megabit Serial Flash Memory with 4Kbytes Uniform Sector
EN25F32
In the case of multi-byte commands of Page Program (PP), and Release from Deep Power Down
(RES ) minimum number of bytes specified has to be given, without which, the command will be
ignored.
In the case of Page Program, if the number of byte after the command is less than 4 (at least 1
data byte), it will be ignored too. In the case of SE and BE, exact 24-bit address is a must, any
less or more will cause the command to be ignored.
All attempts to access the memory array during a Write Status Register cycle, Program cycle or Erase
cycle are ignored, and the internal Write Status Register cycle, Program cycle or Erase cycle continues
unaffected.
Table 4. Instruction Set
Instruction Name
Byte 1
Code
Byte 2
Write Enable
06h
Write Disable / Exit
OTP mode
04h
Read Status
Register
05h
Write Status
Register
01h
Read Data
03h
(S7-S0)(1)
S7-S0
A23-A16
Fast Read
0Bh
A23-A16
Page Program
02h
Sector Erase / OTP
erase
20h
Block Erase
D8h
A23-A16
A23-A16
A23-A16
Chip Erase
C7h/ 60h
Deep Power-down B9h
Release from Deep
Power-down, and
read Device ID
ABh
Release from Deep
Power-down
Manufacturer/
Device ID
90h
Read Identification 9Fh
Enter OTP mode
3Ah
dummy
dummy
(M7-M0)
Byte 3
A15-A8
A15-A8
A15-A8
A15-A8
A15-A8
dummy
dummy
(ID15-ID8)
Byte 4 Byte 5 Byte 6
A7-A0
A7-A0
A7-A0
A7-A0
A7-A0
(D7-D0)
dummy
D7-D0
(Next byte)
(D7-D0)
Next byte
dummy (ID7-ID0)
00h
01h
(ID7-ID0)
(M7-M0)
(ID7-ID0)
(5)
(ID7-ID0)
(M7-M0)
n-Bytes
continuous(2)
continuous
(Next Byte)
continuous
continuous
(3)
(4)
Notes:
1. 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.
2. The Status Register contents will repeat continuously until CS# terminate the instruction.
3. The Device ID will repeat continuously until CS# terminate the instruction.
4. The Manufacturer ID and Device ID bytes will repeat continuously until CS# terminate the instruction.
00h on Byte 4 starts with MID and alternate with DID, 01h on Byte 4 starts with DID and alternate with MID.
5. (M7-M0) : Manufacturer, (ID15-ID8) : Memory Type, (ID7-ID0) : Memory Capacity.
This Data Sheet may be revised by subsequent versions
14 ©2004 Eon Silicon Solution, Inc.,
or modifications due to changes in technical specifications.
Rev. G, Issue Date: 2009/10/16
www.eonssi.com