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EN29LV640 Datasheet

  • EN29LV640

  • Eon Silicon Solution Inc. [64 Megabit (4M x 16-bit ) CMOS 3...

  • 423.46KB

  • EON

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EN29LV640
COMMAND DEFINITIONS
The operations of the device are selected by one or more commands written into the command
register. 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 9). Incorrect addresses, incorrect data values or improper sequences will reset the device to
Read Mode.
Table 9. EN29LV640H/L / EN29LV640U Command Definitions
Bus Cycles
(Note 1-2)
Command
Sequence
Read (Note 3)
Reset
Autoselect
Manufacturer ID
Device ID
Sector Protect
Verify (Note 4)
Cycles
1
Cycle
P
P
st
Addr
Data
Cycle
Addr
Data
P
P
2
nd
3
Cycle
P
P
rd
4
Cycle
P
P
th
5
Cycle
P
P
th
6
Cycle
P
P
th
Addr
Data
Addr
Data
Addr
Data
Addr
Data
1
1
4
4
4
4
3
2
2
6
6
1
1
1
RA
xxx
555
555
555
555
555
XXX
XXX
555
555
BA
BA
55
RD
F0
AA
AA
AA
AA
AA
A0
90
AA
AA
B0
30
98
2AA
2AA
2AA
2AA
2AA
PA
XXX
2AA
2AA
55
55
55
55
55
PD
00
55
55
555
555
80
80
555
555
AA
AA
2AA
2AA
55
55
555
SA
10
30
555
555
555
555
555
90
90
90
A0
20
000
100
X01
(SA)
X02
PA
7F
1C
227E
XX00
XX01
PD
Program
Unlock Bypass
Unlock Bypass
Program
Unlock Bypass Reset
Chip Erase
Sector Erase
Sector Erase Suspend
Sector Erase Resume
CFI Query
Address and Data values indicated are in hex. Unless specified, all bus cycles are write cycles
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鈥檛-Care
PD = Program Data: data to be programmed at location PA
SA = Sector Address: address of the Sector to be erased or verified (in Autoselect mode).
Address bits A21-A15 uniquely select any Sector.
Notes:
1. Data bits DQ15-DQ8 are don鈥檛 care in command sequences, except for RD and PD.
2. Unless otherwise noted, address bits A21-A15 are don鈥檛 cares.
3. No unlock or command cycles required when device is in read mode.
4. The data is 00h for an unprotected sector group and 01h for a protected sector group.
This Data Sheet may be revised by subsequent versions
or modifications due to changes in technical specifications.
18
漏2005 Eon Silicon Solution, Inc., www.essi.com.tw
Rev. C, Issue Date: 2007/01/23

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EN29LV640H-90BCP,EN29LV640H-90BI

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