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256Mb, 512Mb, 1Gb, 2Gb: 3V Embedded Parallel NOR Flash
Block Protection Command Definitions – Address-Data Cycles
Block Protection Command Definitions – Address-Data Cycles
Table 14: Block Protection Command Definitions – Address-Data Cycles, 8-Bit and 16-Bit
Notes 1 and 2 apply to entir e table
Address and Data Cycles
Command and
Bus
1st
2nd
3rd
4th
n th
Code/Subcode
Size
A
D
A
D
A
D
A
D
…
A
D
Notes
LOCK REGISTER Commands
ENTER LOCK REGISTER
x8
AAA
AA
555
55
AAA
40
3
COMMAND SET (40h)
PROGRAM LOCK REGISTER
x16
x8
555
X
AA
A0
2AA
X
55
Data
555
5
(A0h)
x16
READ LOCK REGISTER
x8
X
Data
4, 5, 6
x16
PASSWORD PROTECTION Commands
ENTER PASSWORD
PROTECTION COMMAND
SET (60h)
x8
x16
AAA
555
AA
AA
555
2AA
55
55
AAA
555
60
3
PROGRAM PASSWORD
x8
X
A0
PWAn PWDn
7
(A0h)
x16
READ PASSWORD
x8
x16
00
00
PWD0
PWD0
01
01
PWD1
PWD1
02
02
PWD2
PWD2
03
03
PWD3 …
PWD3
07
PWD7 4, 6, 8,
9
UNLOCK PASSWORD (25h/
x8
00
25
00
03
00
PWD0
01
PWD1 …
00
29
8, 10
03h)
x16
NONVOLATILE PROTECTION Commands
ENTER NONVOLATILE
x8
AAA
AA
555
55
AAA
C0
3
PROTECTION COMMAND
SET (C0h)
PROGRAM NONVOLATILE
x16
x8
555
X
AA
A0
2AA
BAd
55
00
555
11
PROTECTION BIT (A0h)
x16
READ NONVOLATILE
PROTECTION BIT STATUS
x8
x16
BAd
READ(0)
4, 6,
11
CLEAR ALL NONVOLATILE
x8
X
80
00
30
12
PROTECTION BITS (80/30h)
x16
NONVOLATILE PROTECTION BIT LOCK BIT Commands
ENTER NONVOLATILE
x8
AAA
AA
555
55
AAA
50
3
PROTECTION BIT LOCK BIT
COMMAND SET (50h)
PROGRAM NONVOLATILE
x16
x8
555
X
AA
A0
2AA
X
55
00
555
11
PROTECTION BIT LOCK BIT
(A0h)
x16
PDF: 09005aef849b4b09
m29ew_256mb_2gb.pdf - Rev. B 8/12 EN
37
Micron Technology, Inc. reserves the right to change products or specifications without notice.
? 2012 Micron Technology, Inc. All rights reserved.
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