MX25L8006EM2 Datasheet, PDF (13/57 Pages) Macronix International – 8M-BIT [x 1 / x 2] CMOS SERIAL FLASH

MX25L8006E
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 going
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
Size
xxxx00~xxxx0F
128-bit
xxxx10~xxxx3F
384-bit
Standard Factory Lock
ESN (electrical serial number)
N/A
Customer Lock
Determined by customer
P/N: PM1613
REV. 1.2, FEB. 10, 2012
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