EN29LV160A
COMMAND DEFINITIONS
The operations of the EN29LV160A are selected by one or more commands written into the
command register to perform Read/Reset Memory, Read ID, Read Sector Protection, Program,
Sector 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 9. EN29LV160A Command Definitions
Bus Cycles
1st
2nd
Write Cycle
Data
3rd
Write Cycle
4th
Write Cycle
Data
5th
6th
Write Cycle
Data Add Data
Command
Sequence
Write Cycle
Write Cycle
Add
Data Add
Add
Data Add
Add
Read
Reset
1
1
RA
xxx
RD
F0
000
7F
1C
7F
1C
22C4
C4
Word
Byte
555
2AA
55
555
555
Manufacturer
ID
100
000
200
x01
x02
4
AA
90
AAA
AAA
Device ID
Top Boot
Word
Byte
555
AAA
2AA
55
555
AAA
4
4
AA
AA
90
90
555
Device ID
Bottom Boot
Word
Byte
555
2AA
555
x01
x02
2249
49
55
AAA
555
AAA
2AA
(SA) XX00
X02
(SA) 00
Word
Byte
555
555
Sector Protect
Verify
XX01
4
AA
55
90
AAA
555
AAA
X04
01
Word
Byte
Word
Byte
555
AAA
555
2AA
55
555
AAA
555
Program
Unlock Bypass
4
3
AA
AA
A0
20
PA
PD
555
2AA
55
AAA
555
AAA
Unlock Bypass Program
Unlock Bypass Reset
2
2
XXX A0
XXX 90
PA
XXX 00
PD
Word
555
AAA
555
AAA
2AA
555
2AA
555
555
AAA
555
555
AAA
555
2AA
555
2AA
555
555
10
Chip Erase
6
6
AA
55
80
80
AA
AA
55
55
Byte
Word
Byte
AAA
Sector Erase
AA
55
SA
30
AAA
AAA
Erase Suspend
Erase Resume
1
1
xxx
xxx
55
B0
30
Word
Byte
CFI Query
1
98
AA
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
SA = Sector Address: address of the Sector to be erased or verified. Address bits A19-A12 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
This Data Sheet may be revised by subsequent versions
or modifications due to changes in technical specifications.
©2004 Eon Silicon Solution, Inc., www.essi.com.tw
13
Rev. C, Issue Date: 2005/01/07
EON [ EON SILICON SOLUTION INC. ]
