MAX66120 MAXIM [Maxim Integrated Products], MAX66120 Datasheet - Page 5

• Manufacturer Part Number: MAX66120
• Description: ISO 15693-Compliant 1Kb Memory Fob Powered Entirely Through the RF Field
• Manufacturer: MAXIM [Maxim Integrated Products]

Table 1. Memory Protection Matrix
Legend for Table 1:
Table 2. BP1 to BP4 Protection Code Assignments
* If programmed to a locking (protecting) code, the controlling register irreversibly protects itself from further changes. See Tables 2
and 3 for additional details.
Note: Do not program the upper nibble of BP4 to 9 or 5, because this blocks the read access to blocks 0Ch to 0Fh.
00000000b
(00h)
00001010b
(0Ah)
1010<b3><b2><b1><b0>b
(Axh)
CONTROLLING
REGISTER*
DSFID-Lock
AFI-Lock
U-Lock
S-Lock
BP1
BP2
BP3
BP4
CODE
CODE
W
E
00h TO 03h
_______________________________________________________________________________________
BLOCKS
E, W
—
—
—
—
—
—
—
ISO 15693-Compliant 1Kb Memory Fob
Unlocked (factory default)
EPROM-Emulation Mode (irreversible)
BP1: blocks 00h to 03h
BP2: blocks 04h to 07h
BP3: blocks 08h to 0Bh
BP4: blocks 0Ch to 0Fh
Write-Protect Block Mode. Once set to Ah, the upper nibble cannot be changed to any other
value (irreversible). The bits of the lower nibble can still be changed only from 0 (unlocked) to 1
(locked) to write protect blocks individually.
b0: block 00h (BP1), block 04h (BP2), block 08h (BP3), block 0Ch (BP4)
b1: block 01h (BP1), block 05h (BP2), block 09h (BP3), block 0Dh (BP4)
b2: block 02h (BP1), block 06h (BP2), block 0Ah (BP3), block 0Eh (BP4)
b3: block 03h (BP1), block 07h (BP2), block 0Bh (BP3), block 0Fh (BP4)
04h TO 07h
BLOCKS
E, W
—
—
—
—
—
—
—
08h TO 0Bh
BLOCKS
E, W
—
—
—
—
—
—
—
AFFECTED MEMORY AREA
0Ch TO 0Fh
BLOCKS
E, W
—
—
—
—
—
—
—
ERPOM-Emulation Mode
DESCRIPTION
U1 TO U4
Write Protection
DESCRIPTION
—
—
—
—
—
—
—
W
AFI
—
—
—
—
—
—
—
W
DSFID
—
—
—
—
—
—
—
W
S-LOCK
—
—
—
—
—
—
—
W
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