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MX25L1633EZNI10G Datasheet(PDF) 11 Page - Macronix International |
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MX25L1633EZNI10G Datasheet(HTML) 11 Page - Macronix International |
11 / 49 page 11 MX25L1633E P/N: PM1581 REV. 1.8, NOV. 08, 2013 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 Table 2. Protected Area Sizes Address range Size Standard Factory Lock Customer Lock xxxx00~xxxx0F 128-bit ESN (electrical serial number) Determined by customer xxxx10~xxxx3F 384-bit N/A Status bit Protect Level BP3 BP2 BP1 BP0 16Mb 0 0 0 0 0 (none) 0 0 0 1 1 (1block, protected block 31th) 0 0 1 0 2 (2blocks, protected block 30th-31th) 0 0 1 1 3 (4blocks, protected block 28th-31th) 0 1 0 0 4 (8blocks, protected block 24th-31th) 0 1 0 1 5 (16blocks, protected block 16th-31th) 0 1 1 0 6 (32blocks, protected all) 0 1 1 1 7 (32blocks, protected all) 1 0 0 0 8 (32blocks, protected all) 1 0 0 1 9 (32blocks, protected all) 1 0 1 0 10 (16blocks, protected block 0th-15th) 1 0 1 1 11 (24blocks, protected block 0th-23th) 1 1 0 0 12 (28blocks, protected block 0th-27th) 1 1 0 1 13 (30blocks, protected block 0th-29th) 1 1 1 0 14 (31blocks, protected block 0th-30th) 1 1 1 1 15 (32blocks, protected all) |
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