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EN39SL800 Datasheet(PDF) 14 Page - Eon Silicon Solution Inc.

Part No. EN39SL800
Description  8 Megabit (512K x 16-bit) Flash Memory With 4Kbytes Uniform Sector, CMOS 1.8 Volt-only
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Maker  EON [Eon Silicon Solution Inc.]
Homepage  http://www.essi.com.tw
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EN39SL800 Datasheet(HTML) 14 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.
14
EN39SL800
Rev. H, Issue Date: 2011/02/14
COMMAND DEFINITIONS
The operations of EN39SL800 are selected by one or more commands written into the command register
to perform Read/Reset Memory, Read ID, Read Block Protection, Program, Sector/Block Erase, Chip
Erase, Erase Suspend and Erase Resume. Commands are made up of data sequences written at specific
addresses via the command register. The sequences for the specified operation are defined in the
Command Definitions table (Table 5). Incorrect addresses, incorrect data values or improper sequences
will reset the device to Read Mode.
Table 8. EN39SL800 Command Definitions
Bus Cycles
1
st
Cycle
2
nd
Cycle
3
rd
Cycle
4
th
Cycle
5
th
Cycle
6
th
Cycle
Command
Sequence
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Read
1
RA
RD
Reset
1
xxx
F0
000
7F
Manufacturer ID
4
555
AA
2AA
55
555
90
100
1C
Device ID
4
555
AA
2AA
55
555
90
X01
273F
XX00
Block Protect Verify
4
555
AA
2AA
55
555
90
(BA)
X02
XX01
Program
4
555
AA
2AA
55
555
A0
PA
PD
Sector Erase
6
555
AA
2AA
55
555
80
555
AA
2AA
55
SA
30
Block Erase
6
555
AA
2AA
55
555
80
555
AA
2AA
55
BA
50
Chip Erase
6
555
AA
2AA
55
555
80
555
AA
2AA
55
555
10
Erase Suspend
1
xxx
B0
Erase Resume
1
xxx
30
CFI Query
1
55
98
Address and Data values indicated in hex
RA = Read Address: address of the memory location to be read. This is a read cycle.
RD = Read Data: data read from location RA during Read operation. This is a read cycle.
PA = Program Address: address of the memory location to be programmed. X = Don’t-Care
PD = Program Data: data to be programmed at location PA
BA = Block Address: address of the Block to be erased or verified. Address bits A18-A15 uniquely select any Block
SA = Sector Address: address of the Sector to be erased or verified. Address bits A18-A11 uniquely select any Sector
Reading Array Data
The device is automatically set to reading array data after power up. No commands are required to
retrieve data. The device is also ready to read array data after completing an Embedded Program or
Embedded Erase algorithm.
Following an Erase Suspend command, Erase Suspend mode is entered. The system can read array
data using the standard read timings, with the only difference in that if it reads at an address within erase
suspended sectors/blocks, the device outputs status data. After completing a programming operation in
the Erase Suspend mode, the system may once again read array data with the same exception.
The Reset command must be issued to re-enable the device for reading array data if DQ5 goes high, or
while in the autoselect mode. See next section for details on Reset.


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