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 entire table
Address and Data Cycles
Command and
Code/Subcode
ENTER LOCK REGISTER
COMMAND SET (40h)
PROGRAM LOCK REGISTER
(A0h)
READ LOCK REGISTER
Bus
Size
x8
x16
x8
x16
x8
x16
PASSWORD PROTECTION Commands
ENTER PASSWORD
PROTECTION COMMAND
SET (60h)
PROGRAM PASSWORD
(A0h)
READ PASSWORD
UNLOCK PASSWORD (25h/
03h)
ENTER NONVOLATILE
PROTECTION COMMAND
SET (C0h)
PROGRAM NONVOLATILE
PROTECTION BIT (A0h)
READ NONVOLATILE
PROTECTION BIT STATUS
CLEAR ALL NONVOLATILE
PROTECTION BITS (80/30h)
ENTER NONVOLATILE
PROTECTION BIT LOCK BIT
COMMAND SET (50h)
PROGRAM NONVOLATILE
PROTECTION BIT LOCK BIT
(A0h)
x8
x16
x8
x16
x8
x16
x8
x16
x8
x16
x8
x16
x8
x16
x8
x16
x8
x16
x8
x16
AAA
555
X
AA
AA
A0
555
2AA
X
55
55
00
AAA
555
50
X
80
00
30
BAd
READ(0)
AAA
555
X
AA
AA
A0
555
2AA
BAd
55
55
00
AAA
555
C0
00
00
00
PWD0
PWD0
25
01
01
00
PWD1
PWD1
03
02
02
00
PWD2
PWD2
PWD0
03
03
01
PWD3 …
PWD3
PWD1 …
00
07
PWD7 4, 6, 8,
29
AAA
555
X
AA
AA
A0
555
2AA
55
55
AAA
555
60
X
Data
1st
A
AAA
555
X
D
AA
AA
A0
A
555
2AA
X
2nd
D
55
55
Data
A
AAA
555
3rd
D
40
A
4th
D
…
A
nth
D
Notes
LOCK REGISTER Commands
PWAn PWDn
NONVOLATILE PROTECTION Commands
NONVOLATILE PROTECTION BIT LOCK BIT Commands
PDF: 09005aef849b4b09
m29ew_256mb_2gb.pdf - Rev. B 8/12 EN
37
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