256Mb: 3V Embedded Parallel NOR Flash
Block Protection Command Definitions – Address-Data Cycles
Block Protection Command Definitions – Address-Data Cycles
Table 17: Block Protection Command Definitions – Address-Data Cycles, 16-Bit
Notes 1 and 2 apply to entire table
Address and Data Cycles
1st
2nd
3rd
4th
nth
Command and
Code/Subcode
Bus
Size
A
D
A
D
A
D
A
D
…
A
D
Notes
LOCK REGISTER Commands
ENTER LOCK REGISTER
COMMAND SET (40h)
x16
x16
x16
555
X
AA
A0
2AA
X
55
555
40
3
5
PROGRAM LOCK REGISTER
(A0h)
Data
READ LOCK REGISTER
X
Data
AA
4, 5, 6
PASSWORD PROTECTION Commands
ENTER PASSWORD
PROTECTION COMMAND
SET (60h)
x16
555
2AA
55
555
60
3
7
PROGRAM PASSWORD
(A0h)
x16
X
A0
PWAn PWDn
READ PASSWORD
x16
x16
00
00
PWD0
25
01
00
PWD1
03
02
00
PWD2 03 PWD3
PWD0 01 PWD1 … 00
4, 6, 8
8
UNLOCK PASSWORD
(25h/03)
29
NONVOLATILE PROTECTION Commands
ENTER NONVOLATILE
PROTECTION COMMAND
SET (C0h)
x16
555
AA
A0
2AA
55
00
(BKA)
BAd
C0
3
PROGRAM NONVOLATILE
PROTECTION BIT (A0h)
x16
X
(BKA)
BAd
READ NONVOLATILE
PROTECTION BIT STATUS
x16 (BKA) READ(0)
BAd
4, 6,
10
CLEAR ALL NONVOLATILE
PROTECTION BITS (80/30h)
x16
X
80
00
30
11
NONVOLATILE PROTECTION BIT LOCK BIT Commands
ENTER NONVOLATILE
PROTECTION BIT LOCK BIT
COMMAND SET (50h)
x16
555
AA
2AA
55
00
555
50
3
PROGRAM NONVOLATILE
PROTECTION BIT LOCK BIT
(A0h)
x16
X
A0
X
10
READ NONVOLATILE
PROTECTION BIT LOCK BIT
STATUS
x16 (BKA) READ(0)
4, 6,
10
VOLATILE PROTECTION Commands
PDF: 09005aef84ecabef
m29dw_256g.pdf - Rev. A 10/12 EN
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