EN25P20 Datasheet, PDF (8/32 Pages) Eon Silicon Solution Inc. – 2 Mbit Uniform Sector, Serial Flash Memory

EN25P20
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, 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
Byte 3
Byte 4 Byte 5 Byte 6
n-Bytes
Write Enable
06h
Write Disable
Read Status
Register
Write Status
Register
Read Data
Fast Read
Page Program
Sector Erase
Bulk Erase
04h
05h
(S7-S0)(1)
continuous
(2)
01h
S7-S0
03h
A23-A16 A15-A8
A7-A0
(D7-D0) (Next byte) _continuous
0Bh
A23-A16 A15-A8
A7-A0
dummy (D7-D0)
(Next Byte)
continuous
02h
A23-A16 A15-A8
A7-A0
D7-D0
(Next byte) continuous
D8h
A23-A16 A15-A8
A7-A0
C7h
Deep Power-down B9h
Release from Deep
(4)
Power-down, and
dummy
dummy dummy (ID7-ID0)
read Device ID
ABh
Release from Deep
Power-down
Manufacturer/
Device ID
90h
dummy
dummy 00h
(M7-M0) (ID7-ID0)
(5)
Read Identification 9Fh
(M7-M0) (ID15-ID8) (ID7-ID0)
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. All sectors may use any address within the sector.
4. The Device ID will repeat continuously until CS# terminate the instruction.
5. 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.
Table 5. Manufacturer and Device Identification
OP Code (M7-M0)
(ID15-ID0)
(ID7-ID0)
ABh
11h
90h
1Ch
11h
9Fh
1Ch
2012h
This Data Sheet may be revised by subsequent versions
8
or modifications due to changes in technical specifications.
©2004 Eon Silicon Solution, Inc., www.essi.com.tw
Rev. D, Issue Date: 2007/05/07