128Mb 3V Embedded Parallel NOR Flash
Protection Operations
Figure 10: Program/Erase Nonvolatile Protection Bit Algorithm
Start
ENTER NONVOLATILE
PROTECTION
command set
PROGRAM NONVOLATILE
PROTECTION BIT
Addr = BAd
Read byte twice
Addr = BAd
No
DQ6 = Toggle
Yes
No
DQ5 = 1
Yes
Wait 500µs
Read byte twice
Addr = BAd
No
Read byte twice
Addr = BAd
DQ6 = Toggle
Yes
DQ0 =
1 (erase)
0 (program)
No
Yes
Fail
Reset
Pass
EXIT PROTECTION
command set
PDF: 09005aef84daa141
m29w_128mb.pdf - Rev. A 7/13 EN
Micron Technology, Inc. reserves the right to change products or specifications without notice.
43
© 2012 Micron Technology, Inc. All rights reserved.
MICRON [ MICRON TECHNOLOGY ]
