mx25l3237d Macronix International Co., mx25l3237d Datasheet - Page 11

• Manufacturer Part Number: mx25l3237d
• Description: Serial Flash Memory
• Manufacturer: Macronix International Co.

Table 2. Protected Area Sizes
P/N: PM1393
Table 3. 4K-bit Secured OTP Definition
BP3 BP2 BP1 BP0
Address range
xxx000~xxx00F
xxx010~xxx1FF
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
II. Additional 4K-bit secured OTP for unique identifier: to provide 4K-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. 4K-bit secured OTP
definition.
- Security register bit 0 indicates whether the chip is locked by factory or not.
- To program the 4K-bit secured OTP by entering 4K-bit secured OTP mode (with ENSO command), and going through
normal program procedure, and then exiting 4K-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 "4K-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 4K-bit secured OTP
mode, array access is not allowed.
Status bit
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
3968-bit
128-bit
Size
0(none)
1(1block, block 63th)
2(2blocks, block 62th-63th)
3(4blocks, block 60th-63th)
4(8blocks, block 56th-63th)
5(16blocks, block 48th-63th)
6(32blocks, block 32th-63th)
7(64blocks, all)
8(64blocks, all)
9(32blocks, block 0th-31th)
10(48blocks, block 0th-47th)
11(56blocks, block 0th-55th)
12(60blocks, block 0th-59th)
13(62blocks, block 0th-61th)
14(63blocks, block 0th-62th)
15(64blocks, all)
32Mb
Protect Level
ESN (electrical serial number)
Factory Lock
Standard
11
N/A
MX25L3237D
Determined by customer
Customer Lock
REV. 0.02, JUN. 13, 2008