MX25V4035
MX25V8035
Table 2. Protected Area Sizes
Status bit
Protect Level
BP3
0
BP2
0
BP1
0
BP0
0
4Mb
8Mb
0 (none)
0 (none)
0
0
0
1
1 (1block, 1/8 area, block#7)
2 (2blocks, 1/4 area, block#6-7)
3 (4blocks, 1/2 area, block#4-7)
4 (8blocks, ALL)
1 (1block, 1/16 area, block#15)
0
0
1
0
2 (2blocks, 1/8 area, block#14-15)
3 (4blocks, 1/4 area, block#12-15)
4 (8blocks, 1/2 area, block#8-15)
5 (16blocks, ALL)
0
0
1
1
0
1
0
0
0
1
0
1
5 (8blocks, ALL)
0
1
1
0
6 (8blocks, ALL)
6 (16blocks, ALL)
0
1
1
1
7 (8blocks, ALL)
7 (16blocks, ALL)
1
0
0
0
8 (none)
8 (none)
1
0
0
1
9 (1block, 1/8 area, block#0)
10 (2blocks, 1/4 area, block#0-1)
11 (4blocks, 1/2 area, block#0-3)
12 (8blocks, ALL)
9 (1block, 1/16 area, block#0)
10 (2blocks, 1/8 area, block#0-1)
11 (4blocks, 1/4 area, block#0-3)
12 (8blocks, 1/2 area, block#0-7)
13 (16blocks, ALL)
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
13 (8blocks, ALL)
1
1
1
0
14 (8blocks, ALL)
14 (16blocks, ALL)
1
1
1
1
15 (8blocks, ALL)
15 (16blocks, ALL)
II. Additional 512-bit secured OTP for unique identifier: to provide 512-bit one-time program area for setting
device unique serial number - Which may be set by factory or system customer. Please refer to table 3. 512-bit
secured OTP definition.
- Security register bit 0 indicates whether the chip is locked by factory or not.
- To program the 512-bit secured OTP by entering 512-bit secured OTP mode (with ENSO command), and go-
ing through normal program procedure, and then exiting 512-bit secured OTP mode by writing EXSO command.
- Customer may lock-down the customer lockable secured OTP by writing WRSCUR(write security register)
command to set customer lock-down bit1 as "1". Please refer to table of "security register definition" for security
register bit definition and table of "512-bit secured OTP definition" for address range definition.
- Note: Once lock-down whatever by factory or customer, it cannot be changed any more. While in 512-bit se-
cured OTP mode, array access is not allowed.
Table 3. 512-bit Secured OTP Definition
Address range
xxxx00~xxxx0F
xxxx10~xxxx3F
Size
Standard Factory Lock
ESN (electrical serial number)
N/A
Customer Lock
128-bit
384-bit
Determined by customer
P/N: PM1468
REV. 0.01, FEB. 13, 2009
11
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