SL1ICS3101 데이터 시트보기 (PDF) - Philips Electronics
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SL1ICS3101 Datasheet PDF : 20 Pages
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Philips Semiconductors
I-CODE1 Label IC (97 pF)
Product specification
SL1ICS3101
7.2.1 SERIAL NUMBER
The unique 64-bit serial number is stored in blocks 0 and 1 and is programmed during the production process.
Byte SNR0 in the table represents the least significant byte and byte SNR7 the most significant byte, respectively.
Table 2 Block 0 with serial number (lower bytes)
BYTE 0
BYTE 1
BYTE 2
BYTE 3
Block 0
Name
MSB
LSB MSB
LSB MSB
LSB MSB
LSB
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
SNR0
SNR1
SNR2
SNR3
Table 3 Block 1 with serial number (higher bytes)
BYTE 0
BYTE 1
BYTE 2
BYTE 3
Block 1
Name
MSB
LSB MSB
LSB MSB
LSB MSB
LSB
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
SNR4
SNR5
SNR6
SNR7
7.2.2 WRITE ACCESS CONDITIONS
The write access conditions in block 2 determine the write access for each of the 16 blocks. These bits can only be set
to logic 0 (and never be changed to logic 1): therefore, already write protected blocks can never be written to from this
moment on. This is also true for block 2. If this block is set into the write protected state by clearing of bits 5 and 4 at
byte 0, no further changes in write access conditions are possible.
The ‘ones’ (11) in the 16 pairs of bits have to be cleared together if the corresponding block is wanted to be write
protected forever: (11) for write access enabled and (00) write access disabled. Writing of bit pairs (10) or (01) to block 2
is not allowed.
Remarks: It is extremely important to be particularly careful when clearing the write access bits in block 2, as you can
lose write access to all of the blocks in case of a mistake. Of course, this feature can be used to put the SL1IC3101 into
a hardware write protected state.
Table 4 Block 2 with write access conditions for all blocks
BYTE 0
BYTE 1
BYTE 2
BYTE 3
MSB
LSB MSB
LSB MSB
LSB MSB
LSB
Block 2 1 1 1 1 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Write
3 2 1 0 7 6 5 4 11 10 9 8 15 14 13 12
access
for block
number
2002 May 23
6
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