MX25L6445E View Datasheet(PDF) - Macronix International
Part Name
Description
Manufacturer
MX25L6445E Datasheet PDF : 72 Pages
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MX25L6445E
Table 2. Protected Area Sizes
Status bit
BP3
BP2
BP1
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
0
1
1
0
1
1
1
1
1
1
Protection Area
BP0 64Mb
0 0 (none)
1 1 (2 blocks, block 126th-127th)
0 2 (4 blocks, block 124th-127th)
1 3 (8 blocks, block 120th-127th)
0 4 (16 blocks, block 112nd-127th)
1 5 (32 blocks, block 96th-127th)
0 6 (64 blocks, block 64th-127th)
1 7 (128 blocks, all)
0 8 (128 blocks, all)
1 9 (128 blocks, all)
0 10 (128 blocks, all)
1 11 (128 blocks, all)
0 12 (128 blocks, all)
1 13 (128 blocks, all)
0 14 (128 blocks, all)
1 15 (128 blocks, all)
Note: The device is ready to accept a Chip Erase instruction if, and only if, all Block Protect (BP3, BP2, BP1, BP0) are 0.
II. Additional 4K-bit secured OTP for unique identifier: to provide 4K-bit One-Time Program area for setting de-
vice unique serial number - Which may be set by factory or system maker. Please refer to Table 3. 4K-bit Se-
cured 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 secu-
rity 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 Se-
cured OTP mode, array access is not allowed.
Table 3. 4K-bit Secured OTP Definition
Address range
xxx000~xxx00F
xxx010~xxx1FF
Size
128-bit
3968-bit
Standard Factory Lock
ESN (electrical serial number)
N/A
Customer Lock
Determined by customer
P/N: PM1736
REV. 1.8, DEC. 26, 2011
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